Code No. M0121 /R07 Set No.1 GEOTECHNICAL ENGINEERING – IIitsourplace.weebly.com/uploads/8/0/6/5/8065773/is62-67.pdf · GEOTECHNICAL ENGINEERING – II (Civil Engineering) ... What

IV B.Tech I Semester Supplementary Examinations, February/March, 2011

GEOTECHNICAL ENGINEERING – II

(Civil Engineering) Time: 3 hours Max. Marks: 80

Answer any FIVE Questions

All Questions carry equal marks

*****

1. (a) Under what conditions the geophysical methods are used in the soil exploration?

Explain the in detail about the Seismic Refraction Method discuss about its

limitations.

(b) A seismic survey was carried out for a large project to determine the nature of the

substrata. The results of the survey are given in Fig. 1. in the form of a graph.

Determine the depths of the strata.

Fig.1

2. A new canal is excavated to a depth of 5.5 m below ground level through a soil having c

= 14.3 kN/m2, = 150, e = 0.8 and G = 2.80. The slope of the bank is 1:1. Calculate the

factor of safety with respect to the cohesion when the canal runs full. If it is suddenly and

completely emptied, what will be the factor of safety? The stability numbers are as

follows: Sn = 0.083 for 450 Slope and = 15

0; Sn = 0.11 for u = 10

0 and Sn = 0.138 for

u = 50. Use linear interpolation for the other values of u.

Set No.1 Code No. M0121 /R07

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3. A wall of 6 m height retains a non-cohesive backfill of dry unit weight 18 kN/m3 and an

angle of internal friction of 30°. Use Rankine's theory and find the total active thrust per

meter length of the wall. Estimate the change in the total pressure in the following

circumstances (i) The top of the backfill carrying a uniformly distributed load of 6

kN/m2. (ii) The backfill under a submerged condition with the water table at an elevation

of 2 m below the top of the wall. Assume Gs - 2.65, and the soil above the water table

being saturated.

4. Check the stability of a cantilever concrete retaining wall having a stem thickness of 0.4

m uniform throughout, 6.0 m height bed block thickness 0.8 m and a projection of 2.5 m

on the heel side and 1.5 m on the toe side. The unit weight of the wall material is 25

kN/m3. The soil has a unit weight of 18 kN/m

3 and an angle of internal friction of 36

0.

Take in to account a uniform surcharge on the ground of 50 kN/m2. The ground level on

the toe side is 1.2 m high above the base of the wall.

5. A rectangular footing (Fig. 2) is founded at a depth of 2 m below the ground surface in a

(c - ) soil having the following properties: porosity n = 40%, G = 2.67, c = 15 kN/m2,

and = 30°. The water table is close to the ground surface. If the width of the footing is 3

m, what is the length required to carry a safe bearing pressure qa = 455 kN/m2 with a

factor of safety = 3? Use Terzaghi's theory of general shear failure. For = 30°, Nc =

37.2, Nq =22.5, and N =19.7.

Fig. 2

Code No. M0121 /R07 Set No.1

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6. (a) Differentiate critically in principles in deriving the Engineering News formula and

Hiley’s formula for Pile load capacity.

(b) What are the bases on which the dynamic pile formulae are derived? Discuss critically

the limitations of dynamic pile formulas.

(c) A timber pile was driven by a drop hammer weighing 30 kN with a free fall of 1.2 m.

The average penetration of the last few blows was 5 mm. what is the capacity of the

pile according to Engineering News formula?

7. (a) Describe the procedure for the estimation of settlement of a pile group by considering

only the frictional resistance of the pile group.

(b) A group of 9 piles with 3 piles in a row were driven into a soft clay extending from

ground level to a great depth. The diameter and the length of the piles were 30 cm and

10 m respectively. The unconfined compressive strength of the clay is 70 kPa. If the

piles were placed at 90 cm center to center, compute the allowable load on the pile

group on the basis of shear failure criteria for a factor of safety of 2.5.

8. (a) What is the grip length of the well? What are the considerations in the determination

of the grip length?

(b) Discuss the IRC method for the design of Well foundations.

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(Civil Engineering) Time: 3 hours Max. Marks: 80



*****

1. (a) State the objectives of the site exploration and explain the importance of the depth of

exploration for different structures.

(b) A pressure meter test was carried out at a site at a depth of 7 m below the ground

surface. The water table level was at a depth of 1.5 m. The average unit weight of

saturated soil is 17.3 kN/m3. The corrected pressuremeter curve is given in Fig. 1

and the depleted volume of the probe is Vc - 535 cm3. Determine the following.

(i) The coefficient of earth pressure for the at-rest condition

(ii) The Menard pressuremeter modulus Em

(iii) The undrained shear strength cu. Assume that poh = pom in this case

Fig. 1

2. (a) Derive the equation for factor of safety of a finite slope by Bishop’s simplified

method of analysis.

(b) What will be the factor of safety of a 150 slope of infinite extent in a cohesion-less

soil whose angle of shearing resistance is 250?


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3. A retaining wall of 6 m height having a smooth back retains a backfill made up of two

strata shown in Fig. 2. Construct the active earth pressure diagram and find the magnitude

and point of application of the resultant thrust. Assume the backfill above WT

Fig. 2

4. A gravity retaining wall is shown in Fig. 3. Calculate the factor of safety with respect to

overturning and sliding, given the fallowing data:

Wall dimensions: H = 6 m, x1 = 0.6 m, x2 = 2 m, x3 = 2 m, x4 = 0.5 m, x5 = 0.75 m, x6 =

0.8 m, D = 1.5 m.

Soil properties: 1 = 16.5 kN/m3, 1' = 32

0, 2 = 18 kN/m

3, 2' = 22

0, c2'= 40 kPa. Use

the Rankine active earth pressure in your calculations.

Fig. 3


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5. A foundation 2.5 m square is installed 2 m below the surface of a uniform sandy gravel

having a density of 17.2 kN/m2 above the water table and a submerged density of 9.1

kN/m3. The effective strength parameters are c1 = 0 kN/m2 and φ1 = 300. Find the gross

ultimate bearing capacity for the conditions of water table well below the base (with

rupture zone above the water table) Water table rising to the level of the base of the

foundation and the water table raises to the ground level. Use Meyerhof theory. The

bearing capacity factors are, φ = 300, Nq = 18.4 and Nr = 15.7. Shape factors: Sq = Sr = 1+

0.1 kp L

B and dq =dr = 1 + 0.1

B

Dk p , where kp = tan

2(45+φ/2).

6. A soil deposit consists of 2 m of gravel overlaying an 8 m thick deposit of an over-

consolidated clay overlaying rigid permeable sandstone. The gravel has a unit weight of 22

kN/m3 when saturated and a unit weight of 18 kN/m3 when dry. The properties of the clay

are uniform throughout the layer and indicated below:

Void Ratio e 1.2

Specific Gravity Gs 2.7

Pre-consolidation pressure σ′pc 70 kPa

Compression Index Cc 0.1

Recompression Index Cr 0.02

Consolidation coefficient cv 0.5 m2/year

Calculate the settlement under the centre of a square tank of side 5 m exerting an average

pressure of 175 kPa constructed on the ground surface after a long period of time and

estimate the time for 75% of this settlement to occur. Assume that initially the water table is

at the surface of the gravel but that after construction it is lowered to the surface of the clay.

The clay should be divided into two equal sub-layers.

7. (a) Explain the function of pile foundation and show how the bearing capacity of the

foundation can be estimated.

(b) A group of 16 piles 25 m long and 450 mm in diameter is to be arranged in a square

form in a clay soil with an average unconfined strength of 36 kN/m2. Workout the

center to center spacing of the piles for a group efficiency factor of 1. Neglect bearing

at the tip of the piles

8. (a) Discuss the construction aspects of well foundation. What are the tilts and shift? What

are the remedial measures to control these?

(b) Design a well foundation 18 m deep, has the external and internal diameters of 7.5 m

and 6 m respectively. Taking the water level to be 1m below the top, determine the

thickness of the concrete seal required. Assume c = 2360 kN/m2 and c = 24 kN/m

3.

Allowable perimeter shear stress = 660 kN/m2.


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(Civil Engineering) Time : 3 hours Max. Marks: 80



*****

1. (a) Explain the procedure of Plate load test conducted in the field. Mention the

limitations and interpretation of these results with the actual foundation for

different soils.

(b) What are the major uses of boring program in soil exploration? Explain any one

method of boring and its suitability depending on the site conditions.

2. (a) Compute the factor of safety of an infinite slope in a cohesionless soil for a steady

seepage condition when the flow is parallel to the slope.

(b) What will be the factors of safety with respect to average shearing strength, cohesion

and internal friction of a soil, for which the shear strength parameters obtained from

the laboratory tests are c' = 32 kN/m2 and 1 = 18°; the expected parameters of

mobilized shearing resistance are c'm = 21 kN/m2 and ' = 13° and the average

effective pressure on the failure plane is 110 kN/m2. For the same value of mobilized

shearing resistance determine the following:

i) . Factor of safety with respect to height;

ii). Factor of safety with respect to friction when that with respect to cohesion is

unity; and

iii). Factor of safety with respect to strength.

3. A vertical gravity retaining wall, 12 m high, is to retain a clayey soil for which cu = 25

kN/m2, u = 15o and the bulk unit weight b = 19 kN/m3. The soil surface is horizontal

and level with the top of the wall. The water table is horizontal and level with the bottom

of the wall. Determine the magnitude and direction of the minimum force on the wall for

a trial wedge whose slip surface rises from the bottom of the wall at 70o to the horizontal.

Assume that the angle of wall friction is 10o and the wall adhesion is 15 kN/m

2. Hint:

You need to consider the possibility of tension cracks.


1 of 3

4. Figure 1 shows a section of a cantilever wall with dimensions and forces acting thereon.

Check the stability of the wall with respect to (a) overturning, (b) sliding, and (c) bearing

capacity.

Fig. 1

5. (a) How would you fix the depth of the foundation? Discuss the Rankine’s formula for

the minimum depth.

(b) Using Skemption theory, compute the ultimate bearing capacity of a square footing of

1.5 x 1.5 m, resting on the saturated clay at undrained condition at a depth of 1.5 m

from the ground level. Depth correction factor, dc = 1 + 0.2D/B, shape correction

factor, sc = 1 + 0.2 B/L, where D, B and L are the depth of foundation, width and

length of the footing respectively.


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6. The following are the results of a load –settlement test carried out on a 30 cm X 30 cm

plate inside a pit 3.5 m x 3.5 m x 1.5 m in clay soil.

Load (kN) 4 10 15 20 25 30

Settlement

(mm)

-0.5 -1.2 -2.2 -3.8 -7.12 -

16.45

Design a spread footing for a column 1m x 1 m in size carrying a vertical load of 1000 kN.

The allowable settlement is 25 mm.

7. A concrete pile of 45 cm diameter was driven into sand of loose to medium density to a

depth of 15m. The following properties are known:

Average unit weight of soil along the length of the pile, = 17.5 kN/m3 , average =

30°, average Ks = 1.0 and = 0.750. Calculate (a) the ultimate bearing capacity of the

pile, and (b) the allowable load with Fs = 2.5. Assume the water table is at great depth.

Use Berezantsev's method. Nq for L/d = 33.3 = 300 is equal to 16.5

8. A cylindrical well is of 6 m external diameter and 3.6 m internal diameter, and is to be

sunk to a depth of 15 m below the scour level. It is subjected to a horizontal load of 600

kN at a height of 9 m above score level. Determine the allowable resisting force due to

the earth pressure using Terzaghi’s approach assuming that (a) the well rotates about a

point below the base and (b) the well rotates about the base. Soil properties: 1 = 9.9

kN/m3, = 30

0 and factor of safety against passive resistance is 2.5.


3 of 3



(Civil Engineering) Time : 3 hours Max. Marks: 80



*****

1. (a) Explain the procedure of Pressure meter test conducted in the field and draw the

typical pressure volume curve and explain how you can compute the pressuremeter

modulus, Em form the test results?

(b) Compute the area ratio of the sampling tube given the outside diameter = 10 mm and

inside diameter = 94 mm. In what types of soil can this tube be used for sampling?

2. (a) Derive the expression for the factor of safety of an infinite slope in cohesive soils.

The following particulars are given for an earth dam of height 11.7 m. The slope

is submerged and the slope angle = 45°. b = 6.5 kN/m3. c' = 25 kN/m

3, ' = 20°.

Determine the factor of safety FS.

3. Fig. 1. gives a retaining wall with a vertical back face and a sloping backfill. All the

other data are given in the figure. Determine the magnitude and point of application of

resultant active thrust by the Culmann’s method.

Fig. 1


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4. For the cantilever retaining wall shown in Fig. 2, let the fallowing data be given:

Wall dimensions: H = 6.5 m, x1 = 0.50 m, x2 = 1.2 m, x3 = 1.35 m, x4 = 2.1 m, x5 = 1.0 m,

D = 2.0 m, = 150.

Soil properties: 1 = 19.5 kN/m3, 1' = 360, 2 = 17.0 kN/m3, 2' = 100, c2'= 50 kPa.

Calculate the factor of safety with respect to overturning, sliding and bearing capacity.

Fig.2.

5. (a) Write a brief note on types of failures in shallow foundations

(b) A strip footing (Fig. 3) of width 3 m is founded at a depth of 2 m below the ground

surface in a (c - ) soil having a cohesion c = 30 kN/m2 and angle of shearing

resistance, = 35°. The water table is at a depth of 5 m below ground level. The

moist weight of soil above the water table is 17.25 kN/m3. Determine (a) the ultimate

bearing capacity of the soil, (b) the net bearing capacity, and (c) the net safe bearing

pressure and the load/m for a factor of safety of 3. Use the general shear failure

theory of Terzaghi. For = 35°, Nc = 57.8, Nq =41.4, and N = 42.4.


2of 3

Fig. 3.

6. (a) Differentiate between total settlement and differential settlement. What are the

harmful effects of differential settlements on structures? What are the possible

remedial measures?

(b) A rectangular footing 3 m x 1.5 m exerts a pressure of 80 kN/m2 on a cohesive soil (Es

= 5.1 X 104 kN/m2, µ = 0.50). determine the immediate settlement at the center

assuming the footing is (a) flexible (b) rigid. For flexible Influence factors for L/B = 2

are 1.53 at center and 0.77 at corner. For rigid 0.8.

7. (a) Write down the advantages and disadvantages of cast in-situ piles.

(b) A 16-pile group has to be arranged in the form of a square in soft clay with uniform

spacing. Neglecting end bearing determine the optimum value of the spacing of the

piles in terms of the pile diameter, assuming a shear mobilization factor of 0.60.

8. (a) Explain an open caisson(well foundation) with a neat sketch showing all the

component parts. What are the merits and demerits of the well foundation?

(b) Discuss about the Terzaghi method of design of well foundation.


3of 3

Code No: M0221/R07 Set No. 1

IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011POWER SEMICONDUCTOR DRIVES(Electrical & Electronic Engineering)

Time: 3 hours Max Marks: 80Answer any FIVE Questions

All Questions carry equal marks? ? ? ? ?

1. Write down the basic performance equations for a D.C Series motor Sketch char-acteristics of constant torque drive and constant power drive regions. [16]

2. Explain the Speed - torque Characteristics of a dc series motor connected to a threephase semi controlled converter. [16]

3. Explain various speed control method of D.C motors and also draw speed-torquecurves for each method. [16]

4. A 220V, 70A D.C series motor has combined resistance of armature and field is 0.12ohms running on no-load with the field winding connected to a separate source. Itgave following magnetization characteristics at 600 rpm

FieldCurrent(A) 10 20 30 40 50 60 70 80TerminalVoltage (V) 64 118 150 170 184 194 202 210

Motor is controlled in regenerative braking by a chopper with a source voltage of220V.

(a) Calcul;ate motor speed for a duty ratio of 0.5 and motor breaking torque equalto rated motor torque.

(b) Calculate maximum allowable motor speed for a maximum permissible currentof 70A and maximum permissible duty ratio of 0.95.

(c) What resistance must be inserted in armature circuit for the drive to run at1000 rpm without exceeding armature current beyond 70 A? the duty ratio ofthe chopper has a range from 0.05 to 0.95.

(d) To What extent the number of turns in field winding should be reduced torun at 1000 rpm without exceeding armature current beyond 70 A? [16]

5. (a) Generally the stator voltage control is suitable for speed control of Inductionmotor in fan and pump drives. Discuss in detail why the above method isuseful.

(b) Explain why the stator voltage control is not an efficient method of control.[8+8]

6. Discuss in detail how the variable frequency control of an Induction motor canbe achieved using voltage source Inverter. Mention the various advantages of theabove method. [16]

7. Discuss briefly about the traditional Scherbius system. Explain how the sameoperation can be achieved using solid state Scherbious system. [16]

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8. (a) What is the basic difference between true synchronous mode and self controlmode for variable frequency control of Synchronous motor?

(b) When operating in true synchronous mode, why the frequency must be changedin small steps? [8+8]

? ? ? ? ?

2 of 2





1. A 200V, 10.5A, 2000 rpm, Shunt Motor has the armature and field resistances of0.5 and 400 ohms respectively. It drives a load whose torque is constant at ratedmotor torque. Calculate motor speed if the source voltage drops to 175V. [16]

2. In a speed controlled dc drive the load torque is 40 Nm. At time t=0 the operationis under steady state and the speed is 500 rpm. Under this condition at t=0+the generated torque is instantly increased to 100 Nm. The inertia of the drive is0.01.friction is negligible.

(a) Write down the differential equation governing the speed of the drive for t >0.

(b) Evaluate the time taken for the speed to reach 1000rpm. [16]

3. Describe the relative merits and demerits of the following types of braking for dcmotors: mechanical braking, dynamic braking and regenerative braking with neatdiagrams. [16]

4. (a) A 230V, 960rpm and 200A separately excited dc motor has an armature resis-tance of 0.02Ω. The motor is fed from a chopper, which is capable of providingboth motoring and braking operations. The source has a voltage of 230V. As-suming continuous conduction:

i. Calculate the time ratio of chopper for the motoring action at rated torqueand 350 rpm.

ii. Determine the maximum possible speed if maximum value of time ratiois 0.95 and maximum permissible motor current is twice the rated value.

(b) Draw the necessary waveforms for the above problem. [8+8]

5. Discuss why the rotor of an Induction motor should have very large rotor resistancewhen it is controlled from a three phase ac voltage controller. [16]

6. Mention the reasons

(a) Why V/f ratio is maintained constant when the motor is operated below thebase speed.

(b) Why the terminal voltage is maintained constant, when Induction motor isoperated above base speed. Draw relevant speed torque characteristics. [8+8]

7. Explain static motor resistance control for speed control of I.M. Draw speed &torque charecterstics.

[16]

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8. (a) What is a self control mode of Synchronous motor?

(b) Draw and explain the block diagram of a self controlled synchronous motorfed from a three phase inverter. [8+8]

? ? ? ? ?

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1. A dc series motor has Ra = 3Ω , Rf = 3 Ω and Maf= 0.15 H. The motor speedis varied by a phase-controlled bridge. The firing angle is π

4and the average speed

of the motor is 1450 rpm. The applied ac voltage to the bridge is 330 Sin wt.Assuming continuous motor current find the steady state average motor currentand torque. Sketch the waveforms for output voltage, current and gating signals.

[16]

2. Describe the use of three phase semi converter for the speed control of a D.C seriesmotor. Illustrate your answer with appropriate wave forms and also derive the rmsvalues of source and thyristor currents. [16]

3. What are the advantages of electric braking over mechanical braking of D.C. mo-tors? Explain with proper circuit diagram Speed-Torque characteristics of D.Cmotor under dynamic braking, for the following types:

(a) Separately excited dc motor

(b) Series motor. [8+8]

4. Explain the operation of four quadrant chopper fed to the D.C series motor andalso draw the current and voltage wave forms for continuous current operation.[16]

5. A 3φ, 8 pole, 50Hz IM has the following circuit parameters r2=0.15Ω x2 = 0.7Ω.The motor speed is controlled by varying the applied voltage by an AC voltagecontroller, which operates from a 380v, 50Hz supply. Detemine the applied voltageperphase of the motor to have a slip of 0.15. The motor drives a load with acharectersitc of T1 = 0.014W2NW-m. Determine the firing angle of the converter.[16]

6. Discuss in detail how the variable frequency control of an Induction motor can beachieved using Current source Inverter. Mention the advantages and limitations ofthe above method. [16]

7. Draw the circuit diagram and explain the operation of rotor- resistance controlusing chopper. Mention the advantages and disadvantages of the above method ofcontrol. [16]

8. Explain separate control & self control of synchronous motor.[16]

? ? ? ? ?

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1. (a) What are the assumptions made while doing the steady-state performance ofthe converter fed dc drives. Justify your answers.

(b) Explain the use of freewheeling diode in the converter fed dc drives. Take anexample of 1-phase fully controlled converter for explanation. How it is goingto affect the machine performance? [8+8]

2. Describe how the speed of a separately excited D.C motor is controlled throughthe use of two three phase full converters. Discuss how two quadrant drive can beobtained from this scheme. [16]

3. Explain in detail the braking operation of a controlled separately excited d.c motor.[16]

4. Derive the expressions for average motor current, RMS motor currents, Torque,and average motor voltage, for chopper fed D.C separately excited motor. [16]

5. An inverter supplies a six pole three-phase cage Induction motor rated at 415V,50Hz. Determine the approximate voltages required of the inverter for motor speeds600/800/1500/ 1800 rpm. [16]

6. Explain briefly the various methods of achieving variable frequency control of 3Phase Induction motor using solid state switches SCRs / IGBTs. [16]

7. Draw the circuit diagram and explain the operation of rotor- resistance controlusing chopper. Mention the advantages and disadvantages of the above method ofcontrol. [16]

8. In variable frequency control of asynchronous motor why (V/f) ratio is maintainedconstant up to base speed and V constant above base speed. Draw the relevantcharacteristics. [16]

? ? ? ? ?

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IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011OPERATIONS RESEARCH

( Common to Mechanical Engineering, Mechatronics, Electronics &Telematics, Production Engineering and Automobile Engineering)



1. (a) What are the advantages and limitations of LP problem?

(b) Old hens can be bought at Rs 30 each and young ones at Rs 50 each. The oldhens lay 3 eggs per week and the young ones lay 6 eggs per week, each eggbeing worth Rs.1.75 paise. A hen ( young or old ) costs Rs 3 per week to feed.I have only Rs 100 to spend for hens. How many of each kind should I buy togive a profit of more than Rs 6 per week, assuming that I cannot house morethan 20 hens. [6+10]

2. (a) Describe the transportation problem with its general mathematical formula-tion.

(b) Find the optimum solution to the transportation problem given in figure 2bfor which the cost, origin-availabilities, and destination-requirements are given.[6+10]

Figure 2b

3. It has been suggested by a data processing firm that a company adopts the pol-icy of periodically replacing all the tubes in a certain piece of equipment. A giventype of tube is known to have mortality distribution as shown in the following table:

Tube failures/week : 1 2 3 4 5Probability of failure : 0.3 0.1 0.1 0.2 0.3

The cost of replacing the tubes on an individual basis is estimated to be Rs 1.00 pertube and the cost of group replacement policy average Re 0.30 per tube. Comparethe preventive replacement with that of remedial replacement.

1 of 2


4. (a) Solve the game given in figure 4 by reducing to 2 × 2 game by graphicalmethod.

(b) Explain two person zero sum games. [10+6]

Figure 4

5. (a) Explain the characteristics of waiting line models.

(b) A self-service store employs one cashier at its counter. Nine customers arriveon an average every 5 minutes while the cashier can serve 10 customers in5 minutes. Assuming Poisson distribution for arrival rate and exponentialdistribution for service rate, find

i. Average number of customers in the system.

ii. Average number of customers in queue or average queue length.

iii. Average time a customer spends in the system.

iv. Average time a customer waits before being served. [6+10]

6. A T.V. dealer finds that costs of holding a television in stock for a week is Rs.20,customers who cannot obtain new television immediately tend to go to antherdealer; and the estimates that for every customer who does not get immediatedelivery he losses on an average Rs.200. For one particular model of TV, theprobabilities for a demand 0, 1, 2, 3, 4 and 5 in week are 0.05, 0.1, 0.2, 0.2 and 0.15respectively. How many televisions per week should the dealer order? [16]

7. Solve the following LPP by dynamic programming:Minimize Z = x1+3x2+4x3Subject to

2x1+4x2+3x3 ≥ 60,3x1+x2+3x3 ≥ 90x1, x2, x3 ≥ 0. [16]

8. Define simulation. Discuss about limitations of simulation. [16]

? ? ? ? ?

2 of 2






1. (a) What are the advantages of using linear programming.

(b) A former has 100 acre farm. He can sell all tomatoes, lettuce, or radishes hecan raise. The price he can obtain is Rs 1.00 per kg for tomatoes, Rs 0.75 ahead for lettuce and Rs 2.00 per kg for radishes. The average yield per acre is2000 kg of tomatoes, 3000 heads of lettuce and 1000 kgs of radishes. Fertilizeris available at Rs 0.50 per kg and the amount required per acre is 100 kgseach for tomatoes and lettuce, and 50 kgs for radishes. Labour required forsowing and harvesting per acre is 5 man-days for tomatoes and radishes, and6 man-days for lettuce. A total of 400 man-days of labour are available atRs 20.00 per man-day. Formulate this as a Linear-Programming model tomaximize the formers total profit. [6+10]

2. Consider the problem of assigning five operators to five machines. The assignmentcosts are given in figure 2.

Figure 2

Operator A cannot be assigned to machine M3 and operator C cannot be assignedto machine M4. Find the optimum assignment schedule. [16]

3. (a) A company runs a machine shop containing an expensive drill press that mustbe replaced periodically as it wears out. The Vice-President of the companyhas just authorized the installing of a new model but has requested you todevise an optimal replacement plan of next seven years, after which the drill

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press will not needed. State what information you will need and how you willuse it.

(b) Find the cost period of individual replacement of an installation of 300 lightingbulbs, given the following:

i. Cost of replacing individual bulb is Rs. 3

ii. Conditional probability of failure is given below: [6+10]

Week number : 0 1 2 3 4Conditional probability of failure : 0 1/10 1/3 2/3 0

4. A company management and the labour union are negotiating a new three-yearsettlement. Each of these has 4 strategies.

(a) Hard and aggressive bargaining

(b) Reasoning and logical approach

(c) Legalisitic strategy

(d) Conciliatory approach.

The costs to the company are given for every pair of strategy choice given in figure4. [16]

Figure 4

5. In a departmental store one cashier is there to serve the customers. And thecustomers pick-up their needs by themselves. The arrival rate is 9 customers forevery 5 minutes and the cashier can serve 10 customers in 5 minutes. AssumingPoisson arrival rate and exponential distribution for service rate, find:

(a) Average number of customers in the system.

(b) Average number of customers in the queue or average queue length.

(c) Average time a customer spends in the system.

(d) Average time a customer waits before being served. [16]

6. (a) Discuss about significance of inventory.

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(b) A stockist purchases an item at the rate of Rs. 40 per piece from a manufac-turer. 2,000 units of the item are required per year. What should be the orderquantity per order if the cost per order is Rs.15 and the inventory charges peryear are 20 per cent? [6+10]

7. Use dynamic programming toMax Z = 2x1+3x2subject to constraint

x1+x2 ≤ 1x1+x2 ≤ 3x1+x2 ≥ 0

and x1, x2, x3 ≥ 0. [16]

8. Define simulation. What are the advantages and disadvantages? [16]

? ? ? ? ?

3 of 3






1. (a) Describe briefly the different phases of OR.

(b) What are the essential characteristics of OR? Explain the role of computersin this field. [8+8]

2. Consider the problem of assigning five operators to five machines. The assignmentcosts are given in figure 2.

Figure 2

Operator A cannot be assigned to machine M3 and operator C cannot be assignedto machine M4. Find the optimum assignment schedule. [16]

3. (a) Explain with examples for the failure mechanism of items.

(b) A truck owner from his past experience estimated that the maintenance costper year of a truck whose purchase price is Rs. 1,50,000 and the resale valueof truck will be as given below :

Year 1 2 3 4 5 6 7 8Maintenance 10,000 50,000 20,000 25,000 30,000 40,000 45,000 50,000costs (Rs.) :

Resale 1,30,000 1,20,000 1,15,000 1,05,000 90,000 75,000 60,000 50,000value (Rs.) :

Determine at which time it is profitable to replace the truck. [6+10]

4. (a) What are the assumptions made in the theory of games?

1 of 2


(b) Obtain the optimal strategies for both players and the value of the game fortwo-person zero-sum game whose payoff matrix is given in figure 4b. [8+8]

Figure 4b

5. A bank has two tellers working on savings accounts. The first teller handles with-drawals only while the second teller handles deposits only. It has been found thatthe service time distribution for the deposits and withdrawals both are exponentialwith mean service time 3 minutes per customer. Depositors are found to arrive ina Poison fashion throughout the day contains 8 hours of working with mean arrivalrate 16 per hour. Withdrawers also arrive in a Poisson fashion with mean arrivalrate of 14 per hour.

(a) What would be the effect on the average waiting time for depositors andwithdrawers if each teller could handle both withdrawals and deposits?

(b) What would be the effect if this could only be accomplished by increasing theservice time to 35 minutes? [16]

6. (a) Discuss what “Wilson Harris Simple EOQ”.

(b) A manufacturing company uses certain part at a constant rate of 4,000 unitsper year. Each unit costs Rs.2/- and the company personnel estimates thatit costs Rs.50 to place an order, the carrying costs of inventory is estimatedto be 20% per year, find the optimum size of each order and minimum yearlycosts. [6+10]

7. (a) Define Bellmen’s principle of optimality.

(b) Discuss about application of dynamic programming. [8+8]

8. What are advantages of simulation? Explain Monte-Carlo simulation. [16]

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2 of 2






1. (a) Define Operations Research. What are the developments of OR after worldwar II.?

(b) Discuss the Advantages and Limitations of OR. [8+8]

2. (a) With reference to the transportation problem define the following:

i. Feasible solution

ii. Basic feasible solution

iii. Optimal solution.

(b) Determine an initial basic feasible solution and optimal solution to the trans-portation problem given in figure 2b. [6+10]

Figure 2b

3. (a) State some of the simple replacement policies and give the average cost func-tion for the same explaining your notations.

(b) A factor has a large number of bulbs, all of which must be in working condition.The mortality of bulbs is given in the following table :

Week : 1 2 3 4 5 6Proportion of bulbs failure : 0.10 0.15 0.25 0.35 0.12 0.03

If a bulb fails in service, it cost Rs. 3.50 to replace; but if all the bulbs are replacedat a time it costs Rs. 1.20 each. Find the optimum group replacement policy.

[6+10]

4. (a) Differentiate between strictly determinable games and non-determinable games.

(b) With the help of an appropriate example establish the relationship between‘Game theory’ and ‘Linear Programming’. [8+8]

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5. A repair shop attended by a single mechanic has an average of 4 customers per hourwho brings small appliances for repair. The mechanic inspects them for defects andquite often can fix them right away or otherwise render a diagnosis. This takes him6 minutes on the average. Arrivals are Poisson and service time has the exponentialdistribution. Your are required to

(a) Find the proportion of time during which the shop is empty.

(b) Fid the probability of finding at least one customer in the shop.

(c) The average number of customers in the system.

(d) The average time, including service, spent by a customer. [16]

6. (a) Classify inventory.

(b) Find the economic lot size, that associates with total cost and the length oftime between two orders, given that the set-up cost is Rs.100, daily holdingcost per unit of inventory is 5 paise and daily demand is approximately 30units. [6+10]

7. A dealer has to dispose of certain goods within five weeks time. The marker processare fluctuating from week to week. It is estimated that the chances of gettingRs.2,000 for the whole stock and 45%, chances of getting Rs.2,500 are 35% andthere are 20% chances that the goods may sell at Rs.3,000 . If the goods are notsold in the first four weeks, then they will have to be disposed of in the fifth weekat the prevailing market price in that week. When should the stocks be sold? [16]

8. Define simulation. Explain about simulation languages. [16]

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Code No: N0424/R07 Set No. 1

IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011OPERATING SYSTEMS

( Common to Electronics & Communication Engineering, Bio-MedicalEngineering and Electronics & Telematics)



1. What are the various classes of interrupts? Explain. [16]

2. Draw and explain about five-state process model. [16]

3. Explain how process synchronization is helpful required for executing programs?[16]

4. Explain about Deadlock Avoidance. [16]

5. Specify the purpose of the following registers:

(a) base register

(b) limit register

(c) memory address register

(d) relocation register

(e) memory buffer register

(f) page-table base register

(g) page-table length register

(h) fence register. [8×2]

6. What is the difference between preemptive and non preemptive scheduling? Explainan algorithm for each scheduling type. [16]

7. List and explain the information elements of a File directory. [16]

8. (a) Explain the protection spectrum offered by operating system.

(b) Make a comparison of Passive threats with active threats. [8+8]

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1. Some CPUs provide for more than two modes of operation. What are two possibleuses of these multiple modes? Explain. [16]

2. (a) What are the two separate and potentially independent characteristics em-bodied in the concept of the process? Discuss.

(b) What resources are typically shared by all of the threads of a process? [8+8]

3. Explain the solution for the critical section problem for multiple processes. [16]

4. Explain about Deadlock Avoidance. [16]

5. Most systems allow program to allocate more memory during execution. Discussabout the requirements to support dynamic memory allocation in the followingschemes.

(a) Contiguous- memory allocation.

(b) Pure segmentation.

(c) Pure paging. [6+5+5]

6. (a) Discuss with examples the three types of processor scheduling.

(b) Differentiate between turn around time and response time. [12+4]

7. Explain file sharing. Discuss access right and management of simultaneous access.[16]

8. (a) Discuss the properties of multilevel security. Explain how reference monitorkeeps track of these properties?

(b) What is a virus? Explain the nature of viruses. [8+8]

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1. What are the three different techniques for the I/O communication? Explain indetail. [16]

2. Explain the following transitions:

(a) Blocked → Blocked/Suspended.

(b) Blocked/Suspended → Ready/Suspended.

(c) Ready/Suspended → Ready. [5+5+6]

3. What are the requirements of mutual exclusion? [16]

4. Explain about Deadlock Prevention. [16]

5. Explain about address binding for a user program and discuss multi step processingof a user program. [16]

6. Suppose the head of a moving- head disk with 200 tracks, numbered 0 to 199, iscurrently serving a request at track 143 and has just finished a request at track 125.If the queue of requests is kept in FIFO order: 86, 147, 91, 177, 94, 150, 102, 175,130. What is the total head movement to satisfy these requests for the followingdisk scheduling algorithms.

(a) FCFS

(b) Random

(c) PRI

(d) SCAN

(e) SSTF

(f) C- SCAN [16]

7. (a) Explain sequential file and indexed sequential file.

(b) Discuss access control information elements of a file directory. [8+8]

8. (a) Explain digital immune system.

(b) Give categorization of viruses. [10+6]

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1. Draw and explain how the interrupt occurs after instruction at location N for thechanges in memory and registers. [16]

2. What are various steps involved in creating a process? Discuss in detial? [16]

3. What are the requirements of mutual exclusion? [16]

4. Explain about Deadlock Prevention. [16]

5. (a) A process references five pages A, B, C, D and E in the following order:A; B; C; D; A; B; E; A; B; C; D; E Assume that the replacement algorithmis FIFO find the number of page transfer during this sequence of referencestarting with an empty main memory with these pages frames. Repeat forfour pages frames.

(b) Explain Resident set Management. [8+8]

6. (a) What are the difference between short-term, medium-term and long-termscheduling.

(b) Discuss with suitable examples any two uni processor scheduling algorithms.[6+10]

7. (a) Discuss about UNIX block addressing scheme.

(b) Explain the concept of reliability with respect to secondary storage manage-ment. [8+8]

8. (a) Explain the various password selection strategies.

(b) Discuss about UNIX password scheme. [8+8]

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IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011MICRO CONTROLLERS AND APPLICATIONS




1. Bring out the functional difference between microprocessors and microcontroller bydrawing their basic block diagrams. [16]

2. Write a program to add 4, 32bit numbers using 8051 µC assembly language. [16]

3. Write short notes on the following:

(a) Non maskable interrupts.

(b) Exceptions. [2×8]

4. (a) Write short notes on TCON register.

(b) Give instructions to set the register PSW & PC. [8+8]

5. Use an 8-bit D/A converter which generaters 1000Hz sine wave. 166 decimal sam-ples are stoled in a look up table and fed to the converter at a rate of one sampleper 6 µ sec. The look uptable is pointed by DPTR and R1 is used to count thesamples. Write assembly language program to initialize the D/A converter whichis interfaced to 8051. [16]

6. (a) List the best strategies for synchronisation between the tasks and ISRS.

(b) Explain the terms process descriptor and process control block [16]

7. (a) How do we program bit rate/clock rate during the synchronous function in an80196? Explain for a bit rate of 9600 bud/sec

(b) What is an overrun error?

(c) For a 12 MHZ crystal with 80196, what is the period between the two inputsto FRC timer 1? [16]

8. (a) Draw and explain the ARM core dataflow model.

(b) What are the various condition flags in ARM? [8+8]

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1. How the mapping of control address data select and control signal in microprocessorcan be map on to 8051 environment? [16]

2. Explain in detail the function of CPU registers. [16]

3. What are the instructions that will enable and disable interrupts explain in detail?[16]

4. Write what in the value (in hex) loaded into TH, TR, TF for to program timersfor mode2.

(a) MOV THO, #OOH

(b) MOV TRO, #12H

(c) usTFO, #BH. [16]

5. Use an 8-bit D/A converter which generaters 1000Hz sine wave. 166 decimal sam-ples are stoled in a look up table and fed to the converter at a rate of one sampleper 6 µ sec. The look uptable is pointed by DPTR and R1 is used to count thesamples. Write assembly language program to initialize the D/A converter whichis interfaced to 8051. [16]

6. How do we initiate pre emptive scheduling and assign prioritieus to the tasks forscheduling? Give two examples of the need for pre emptive scheduling? [16]

7. Draw 80196 Verticle windows. What are the uses of vertical windows? What arethe advantages of providing adjustable vertical window size? [16]

8. (a) What is current program status register? Explain the generic structure ofprogram status register as ARM core.

(b) What are the various processor modes of ARM.What is thin order of privilage?Explain. [8+8]

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1. Write a program to arrange the given numbers in ascending and descending orderusing assembly language program of 8051. [16]

2. Write a program to add 4, 32bit numbers using 8051 µC assembly language. [16]

3. Narrate module coupling in interrupt service routine using 8051 interrupt structure.[16]

4. Write a routine for delay that a timer starts to the time the TF flag in raised. [16]

5. (a) LCD display module takes a certain time for the excuction of its own instruc-tion. This delay is varaiable and depends on many factors. Discuss this issueand findout the solutions to make the software independent of actual LCDinterface Hardware.

(b) What are the various selection criteria between LCD and LED display. [8+8]

6. (a) When do we use cooperative scheduling and do we use preemptive scheduling?

(b) Explain the importance of each of the following metrics of a real time system(i) through put(ii) interrupt latencies,(iii) average response times and(iv) deadline misses [8+8]

7. (a) List the special function registers of 80196. How does 26 byte addresses ac-commodate more than 26 special function register bytes?

(b) Describe the function of HSO and HSI unit in 80196 [8+8]

8. (a) How can we change the PSR contents through instructions in ARM? Explaindifferent PSR instructions in ARM.

(b) Explain how a constant is loaded into a general purpose register of ARMprocessor.

(c) What is Thumb state? [6+6+4]

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1. Draw and explain the block diagram of external data memory interface. [16]

2. Describe the procedure for I/O bit manipulation programming? [16]

3. How do you compare interrupts Vs polling? [16]

4. (a) Find the timer’s clock frequency and its period for various 8051-based systemswith the following frequencies.

i. 8MHz

ii. 4MHz

iii. 16MHz.

(b) Write about GATE in TMOD register. [8+8]

5. (a) LCD display module takes a certain time for the excuction of its own instruc-tion. This delay is varaiable and depends on many factors. Discuss this issueand findout the solutions to make the software independent of actual LCDinterface Hardware.

(b) What are the various selection criteria between LCD and LED display. [8+8]

6. (a) Explain round robin and pre emptive scheduling with examples. When do weuse each of them?

(b) How does a semaphore handles a critical section of a task? [10+6]

7. (a) What are the uses of the bits in interupt pending register? How do we usethese for the interupt servicing at timer 1 and timer 2 in 80196?

(b) How do we reset the timer 2 in 80196? [10+6]

8. (a) What are the Thumb version load-store multiple instructions? Explain themwith example.

(b) Explain how Thumb state changes to ARM state and vice verse. [8+8]

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IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011TELEVISION ENGINEERING

(Electronics & Communication Engineering)Time: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

? ? ? ? ?

1. (a) How do you come to conclusion that the color sub carrier in 4.53 MHz.

(b) Explain the reasons for selecting existing standards for color transmission.[8+8]

2. (a) Write about positive and negative modulation in detail.

(b) Discuss the merits and demerits of negative modulation. [10+6]

3. Discuss briefly about the following.

(a) Camera control unit.

(b) Special effects generation.

(c) View finder. [5+5+6]

4. Write in detail NTSC color system and also give limitations of NTSC system.[16]

5. (a) Draw the block diagram of an AFT circuit and explain the functions of eachblock.

(b) Explain how sound trap circuit is used to separate the sound signal from videosignal. [8+8]

6. (a) With a neat sketch, explain the operation of synchronous video detector cir-cuit.

(b) Draw a block diagram of digital FM detector and explain the functions eachblock. [8+8]

7. (a) With a neat sketch, explain the operation of Burst phase IDENT amplifierand colour killer generation circuit.

(b) Write short notes on PAL bistable switch. [10+6]

8. Draw the circuit diagram of Single-Ended AFC. Illustrate the operation of thecircuit with necessary waveforms, and explain operation of circuit in detail. [16]

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? ? ? ? ?

1. (a) Explain how to generate a color signal.

(b) Sketch the video signal for color signals and explain it. [10+6]

2. (a) Draw the block diagram of CIN diplexer and explain the function of eachblock.

(b) Explain how trunastile antenna is used for TV transmission. [16]

3. Write about the following:

(a) Image storage capability.

(b) Need for dichrome mirrors in camera optics. [8+8]

4. Draw the figure of monochrome picture tube and explain its working. [16]

5. With a neat block diagram explain the functioning of a typical TV monochromereceiver, in detail. [16]

6. (a) With a neat circuit diagram explain how noise cancellation is done by a sep-arate noise gate amplifier.

(b) Draw the block diagram of Phase Locked Loop FM detector and explain thefunctions of each block. [8+8]

7. (a) Explain with a suitable circuit diagram how saturation control affects changein the magnitude of chroma signal.

(b) Write short notes on reference oscillator. [10+6]

8. Explain how integrating and differentiating circuits are employed to separate verti-cal and horizontal sync pulses. Draw the typical circuit and explain its operation.Indicate how a noise gate can be added to it. [16]

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? ? ? ? ?

1. Write short notes on the following.

(a) Brightness

(b) Contrast

(c) Viewing distance

(d) Luminance [4×4=16]

2. (a) Draw the block diagram of CIN diplexer and explain the function of eachblock.

(b) Explain how trunastile antenna is used for TV transmission. [16]

3. Write about the following

(a) Light transfer characteristics.

(b) Sensitivity.

(c) Spectral response of monochrome TV.

(d) Resolving power. [4×4=16]

4. Draw the control circuit of picture tube and discuss the methods of providingcontrol of various elements in the circuit. [16]

5. (a) Draw the block diagram of the vertical deflection system in monochrome TVreceiver and explain the functions each block.

(b) Write short notes on Automatic Fine Tuning in PAL-D colour receiver. [8+8]

6. (a) Draw the block diagram of UHF tuner and explain the functions of each block.

(b) With a neat sketch, explain the overall IF response curve of a colour TVreceiver.

[10+6]

7. Draw the circuit diagram of a crystal controlled reference oscillator and explainhow its output is synchronized with the frequency and phase of colour burst. [16]

8. (a) Draw a basic circuit of a sync separator employing a transistor and explainwith suitable waveforms how self-biasing enables slicing-off of sync pulses.

(b) What are the functions of various VLSI chips used in the TV receiver? [10+6]

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? ? ? ? ?

1. (a) Draw a composite video signal for three horizontal black & white lines andlocate important points.

(b) How do you calculate the highest frequency components of 525 line and 60 Hzsystem? Explain. [10+6]

2. Write about the followings parameters.

(a) Transmitter Efficiency.

(b) Adjacent channel interference.

(c) Co channel interference.

(d) Sound signal BW. [4×4=16]

3. Write about the various problems in vidicon camera tube and their remedies. [16]

4. Draw the figure of monochrome picture tube and explain its working. [16]

5. (a) Draw the block diagram of the vertical deflection system in monochrome TVreceiver and explain the functions each block.

(b) Write short notes on Automatic Fine Tuning in PAL-D colour receiver. [8+8]

6. (a) With a neat sketch, explain the operation of transistor keyed AGC circuit.

(b) What are the functions of TV tuner? [8+8]

7. (a) Explain with a suitable circuit diagram how saturation control affects changein the magnitude of chroma signal.

(b) Write short notes on reference oscillator. [10+6]

8. Draw the circuit diagram of Single-Ended AFC. Illustrate the operation of thecircuit with necessary waveforms, and explain operation of circuit in detail. [16]

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IV B.Tech. I Semester Supplementary Examinations, February/March - 2011

WEB TECHNOLOGIES

(Computer Science & Engineering)

Time: 3 Hours Max Marks: 80



*******

1. a) Compare and Contrast HTML and DHTML.

b) Write a JavaScript to validate a form consisting of a username.

Also navigate to another web page after validation. [8+8]

2. a) Describe the scoping rules for the JavaScript with examples.

b) Discuss the advantages of CSS. [8+8]

3. Design an XML schema for hospital information management. Include

every feature available with schema. [16]

4. a) Define BeanInfo Interface. Explain the importance of a BeanInfo

Interface.

b) Create a simple code which utilizes the BeanInfo interface

effectively. [8+8]

5. a) What is MIME? What is meant by MIME types of file? Which is the

method that return the MIME type of file?

b) Explain the interface that enables Servlet to log events and access

information about their environment.

c) How to start a web browser and request a Servlet. [6+6+4]

6. Write a JSP that allows the user to select an item from a list and to

press submit button later prints the item on web page. [16]

Code No: M0521 /R07 Set No. 1

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R07

7. a) Write an example JSP to illustrate a method declaration and usage.

b) What is meant by dynamic content? Differentiate it with other forms.

[8+8]

8. a) Give a note on popular JDBC driver names.

b) Discuss about statement class. [8+8]

Set No. 1 Code No: M0521 /R07

2 of 2

R07


WEB TECHNOLOGIES





*******

1. a) Explain the following terms related to CSS:

i) Font size

ii) Font weight

iii) Font strech

iv) Text decoration

v) Text transformation

vi) Text alignment

vii) Padding

viii) Border style.

b) Explain the various ways you can reference a color in CSS. [8+8]

2. a) Explain briefly the creation of namespaces in XML with a suitable

example.

(b) Explain the various types of XML schema data types used. [8+8]

3. a) Explain the basic structure of an XML document and highlight the

advantages of XML over HTML.

b) Explain the usage of the following XSL elements:

i) apply-templates

ii) attribute

iii) eval

iv) template

v) value-of

vi) choose. [8+8]


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R07

4. a) Write a note on Custom-tag libraries.

b) Discuss about usage of JavaBean Component in JSP. [8+8]

5. a) List and explain the steps followed to test the servlet program.

b) Describe in detail ServletResponse interface of javax.servlet

package. [8+8]

6. a) Explain the process of installing Java Software Development Kit.

b) “JSPs are an extension of servlet technology”. Justify. [8+8]

7. a) Make a comparison of scriplets and beans.

b) How data will be shared between JSPs. [8+8]

8. Explain how JDBC performs mapping between JAVA and SQL data

types. [16]

Set No. 2 Code No: M0521 /R07

2 of 2

R07


WEB TECHNOLOGIES





*******

1. a) Explain how a switch-case statement is used in JavaScript with an example.

b) Describe the scoping rules for the JavaScript with examples. [8+8]

2. a) Compare and contrast HTML and XML.

b) Write a DTD for the XML document which has the student details with

following fields arranged in a tabular format. Also assume the values of each field.

Name Registration number Department Class [8+8]

3. a) What are the benefits of using styles compared with placing formatting directly into

the text of the Web page?

b) What is a stylesheet class?

c) Describe the different ways that styles can be added to an age. [5+5+6]

4. Write about the following:

a) Bean methods

b) Bean properties

c) Bean events. [16]

5. a) Explain the core interface provided in javax.servlet.http package.

b) How to handle HTTP requests and responses. [8+8]

6. Explain JSP application design with suitable example? [16]

7. a) Develop a JSP to keep track number of users and display a message “You are nth

visitor” where n is number of user.

b) Write a detail note on JSP escape sequences. [8+8]




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R07


WEB TECHNOLOGIES





*******

1. a) Explain how would you create an Ordered list.

b) Create a HTML table with columns for a country-name, national sport,

national flower, national animal and national tree. There must be at

least five states as rows in the table. [6+10]

2. a) Describe the major differences between Java and JavaScript.

b) “Javascript is referred to as Object based programming language”-

support the statement with relevant examples. [8+8]

3. Briefly explain DOM and SAX XML Parsers with neat examples. [16]

4. a) What is a BeanBox? Write the about BeanBox.

b) Explain the highlighting features of java bean. [8+8]

5. a) Explain the core interface provided in javax.servlet.http package.

b) How to handle HTTP requests and responses. [8+8]

6. Explain JSP scripting components with examples. [16]

7. a) Explain the lifecycle of JSP.

b) Discuss the JSP standard actions. [8+8]




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R07


IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011TRANSPORT PHENOMENA

(Chemical Engineering)Time: 3 hours Max Marks: 80


? ? ? ? ?

1. Estimate the viscosity of the following gas mixture at 1 atm and 293 K from thegiven data on the pure components at the same pressure and temperature: [16]S.No. Species Mole fraction Molecular weight viscosity×107(gm/cm.sec)1 CO2 0.133 44.01 14622 O2 0.039 32.0 20313 N2 0.828 28.02 1754

2. Calculate the thermal conductivity of a mixture containing 20 mole% CO2 and80mole% H2 at 1 atm and 300K. [16]Data:

Species α Mole fractionxα Mα µα × 105(pas.s) Kα(w/m.k)CO2 1 0.2 44.01 1.506 0.01661H2 2 0.8 2.016 0.8944 0.1789

3. (a) What is diffusion? What factors may cause diffusion to occur?

(b) Explain about molecular mass transport?

(c) Show that jA = − ρDAB∇wA [4+6+6]

4. Consider a liquid (of density ρ) in laminar flow down an inclined flat plate of lengthL and width W. The fluid flows as a falling film with negligible rippling under theinfluence of gravity. End effects may be neglected because L and W are largecompared to the film thickness δ.

(a) Determine the steady-state velocity distribution for a non-Newtonian fluidthat obeys the power law model. Reduce the result to the Newtonian case.

(b) Obtain the mass flow rate for a power law fluid. Simplify for a Newtonianfluid.

(c) What is the force exerted by the fluid on the plate in the flow direction? [16]

5. Derive an expression for temperature distribution T(x) in a viscous fluid in steadylaminar flow between two large vertical flat parallel plates separated by distance2B. Both the plates are maintained at a constant temperature T0. Take in toaccount explicitly the heat generated by viscous dissipation. Neglect temperaturedependence of viscosity and thermal conductivity. Velocity distribution is given by

vz =(P0−PL)B

2

2µL

(

1−[

xB

]2)

[16]

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6. Component A is disappearing in accordance with a first order irreversible reactionin a long solid slab of uniform height ‘H’ and width ‘W’. The upper and lowersurfaces of the slab are maintained at a concentration of CAH and zero respectively.Use shell mass balance method, determine the steady state concentration profile inthe slab and determine mass flux at two surfaces. [16]

7. (a) Arrive at the substantial time derivative from the following equation of motion.

∂ρvx∂t

= −(

∂ρvxvx∂x

+ ∂ρvxvy∂y

+ ∂ρvxvz∂z

)

−

(

∂τxx∂x

+ ∂τyx∂y

+ ∂τzx∂z

)

−∂p

∂x+ ρgx

(b) Consider an isothermal, incompressible Newtonian fluid flowing radially be-tween two porous spherical shells. Assume steady state laminar flow and ne-glect end effects. Arrive at the differential equations for pressure distributionsby modifying the equations of change. [6+10]

8. Give detailed account of special form of equations of motion for the free convectionproblem in which the system has temperature inequalities as well as concentrationinequalities. [16]

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? ? ? ? ?

1. (a) Explain the concept of molecular theory of the viscosity of liquids.

(b) Estimate the viscosity of liquid benzene at 20oC.

Data: At 20oC ,−

V = 89.0 cm3/gm−mole, Tb = 80.1oC

2. (a) Compute the thermal conductivity of Ne at 1 atm and 373.2KData: Ne molecular weight = 20.183, σ = 2.789Ao and Ωµ = 0.821

(b) In what way are Newton’s law of viscosity and fourier’s law of heat conductionare similar.

[8+8]

3. (a) Show that vA − vB = −DAB∇ ln xA

xB

(b) Show thatjA

ρwA wB

=J∗

A

c xA xB

. [8+8]

4. A common channel for fluid is annulus, the space between the two concentric cir-cular pipes. The inside of the annulus has a radius ‘r1’ and the out side ‘r2’.

(a) Derive an expression for the velocity of flow ‘V’ at any radius ‘r’ in the annulus.

(b) Derive an expression for the radius at which the maximum velocity occurs, interms of r1 and r2. [16]

5. A viscous fluid with constant physical properties is in steady laminar flow in acircular tube of radius ‘R’. For z < 0, (z is longitudinal axis) the fluid temperatureis uniform at T0. For z < 0, there is a constant wall heat flux ‘Q’. Arrive at thepartial differential equation for steady state temperature distribution using shellbalance approach. Indicate clearly all the applicable boundary conditions. [16]

6. A droplet of substance A is suspended in a stream of gas B. The droplet radius is r1.Assuming that there is a spherical stagnant gas film of outer radius r2 surroundingthe droplet. Obtain an expression by shell balance method for the flux of componentA in the gas phase when its concentrations are xA1 and xA2 at radii r1 and r2respectively. Also show that when r2 tends to infinity, the Sherwood number is 2.

[16]

7. An incompressible isothermal Newtonian fluid is in steady laminar flow under apressure gradient in a slot formed by two horizontal parallel walls a distance 2Bapart and of infinite width. Let the length of the walls is L and assume the flow isfully established. Develop the relations for shear stress and velocity distributionsby solving equations of change. [16]

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8. A natural gas containing Helium gas in a pyrex tube with inner and outer radiiR1 and R2 respectively. Obtain an expression for the rate at which Helium willleak through the tube using equation of continuity for Helium. The interfacialconcentrations CHe1 and CHe2 respectively at R1 and R2 respectively. [16]

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? ? ? ? ?

1. (a) Explain three parameter models for non-Newtonian fluids.

(b) What are the physical meanings of the lennard - jones parameters and howcan they determined from viscosity data? [8+8]

2. (a) Compute the thermal conductivity of argon at 1000C and 1 atmData: Argon molecular weight = 39.948, σ = 3.432A0 and Ωµ=1.0344

(b) Compute the thermal conductivities of NO at 300K and 1 atm by Eucken’sformula by using the data: M = 30.01, µ = 1929× 10−7 gm/cm.sec, Cp=7.15cal/gmole.k.

[16]

3. (a) Discuss the dependence of mass diffusivity on temperature and pressure.

(b) Show that for a binary mixture jA∗+jB∗=ρ(v − v∗)..

(c) Show that for a binary mixture jA + jB = 0.[8+8]

4. Consider a fluid (of constant density ρ) in incompressible, laminar flow in a tubeof circular cross section, inclined at an angle β to the vertical. End effects may beneglected because the tube length L is relatively very large compared to the tuberadius R. The fluid flows under the influence of both a pressure difference ∆p andgravity.

(a) Using a differential shell momentum balance, determine expressions for thesteady-state shear stress distribution and the velocity profile for a Newtonianfluid of variable viscosity µ .

(b) Obtain expressions for the maximum velocity, average velocity and the massflow rate for pipe flow. [8+8]

5. Obtain the radial temperature distribution with in an electrical wire with the rateof heat production given by Se = I2

ke, where I is current density in amp/cm2 and

ke is electrical conductivity in ohm−1cm−1. The wire surface is maintained attemperature T0. Use shell balance approach. [16]

6. An air conditioning room has an atmosphere of air with a 30mole% CO2 concen-tration. Outside the room, the concentration of CO2 is very small. However thereis a hole in the wall. The pressure is 1 atm and temperature is 25 0C. Under theseconditions the diffusivity of CO2 in air is 0.164×10−4m2/s. The hole is 10 cm indiameter and wall is 30 cm thick.

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(a) The amount of CO2 that exits the room

(b) The amount of air that enters the room. [16]

7. (a) Distinguish between substantial derivative and total time derivative with thehelp of an example.

(b) Apply Navier-Stokes equation to find an expression for velocity distributionfor laminar flow of Newtonian fluid in thin film along an inclined flat plate.

[6+10]

8. There are two concentric spherical shells of radii aR and R in which the innersurface of the outer one is at temperature T1 and outer surface of the inner one ismaintained at Ta. Dry air at temperature Ta is blown radially from the inner shellin to the intervening space and out through outer shell. Develop an expression forthe required rate of heat removable from the inner sphere as a function of massflow rate of gas. Assume steady laminar flow and low gas velocity.

ρCpvrdTdr

= k 1

r2ddr

(

r2 dTdr

)

[16]

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? ? ? ? ?

1. (a) Compare Newton’s law of viscosity and Hooke’s law of elasticity.

(b) Compute the steady state momentum flux, when the lower plate velocity is 1ft/sec in the positive x direction, the plate separation is 0.001 ft, and the fluidviscosity is 0.7 cp.

(c) How does the viscosity vary with temperature and pressure for

i. dilute gases

ii. liquids. [6+6+4]

2. (a) Compute the thermal conductivity of Ne at 1 atm and 373.2KData: Ne molecular weight = 20.183, σ = 2.789Ao and Ωµ = 0.821

(b) In what way are Newton’s law of viscosity and fourier’s law of heat conductionare similar.

[8+8]

3. (a) Show that J∗A = −

(

ρ2

cMA MB

)

DAB∇wA

(b) Estimate DAB for the system CO - CO2 at 296.10K and 1 atm total pressure.[8+8]

Data:

label Compound M Tc Pc

A CO 28.01 133 34.5B CO2 44.01 304.2 72.9

4. Derive expressions (using shell balances) for shear stress and velocity distributionsof a laminar flow of a Newtonian fluid flowing through an annulus. Find the averagevelocity [16]

5. (a) Give analogy between laminar flow of fluid in a pipe and heat conduction ina wire with electrical heat source.

(b) A power law fluid is rotated in between two coaxial cylinders with the innercylinder stationary and the outer cylinder moving with constant velocity ‘V’.The heat generated due to viscous dissipation per unit volume is given by SV =

K(

Vb

)n+1, where b is the space between the cylinders. Obtain the temperature

distribution of the fluid by shell energy balances. State the assumptions madeclearly. [6+10]

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6. In studying the rate of leaching of a substance A from solid particles by a solventB, it is postulated that the rate controlling step in diffusion of A from the particlesurface through a liquid film out in to the main liquid stream. The solubility of Ain B is CA0 and concentration in main stream beyond the liquid film of thickness δis CAδ.

(a) Obtain a differential equation for CA as a function of z by making mass balanceof A over a thin slab of thickness ∆z. Assume that DAB is constant and A isonly slightly soluble in B. Neglect the curvature of the particle.

(b) Show that in the absence of chemical reaction in the liquid phase the concen-tration profile is linear.

(c) Show that the rate of leaching is given by

NA=DAB(CAδ−CA0)

δ[16]

7. Determine velocity distribution and torque for the tangential laminar flow of anincompressible fluid between two coaxial cylinders, the outer one of which is rotatingwith an angular velocity ω0 and the inner one is stationary using equations ofchange. [16]

8. A hollow solid sphere has its inner (r=b) and outer (r=a) surfaces maintained attemperatures Tb and Ta respectively. Obtain the relation for temperature dis-tribution in the solid at steady state conditions using thermal energy equation.Determine the heat flux at both surfaces and comment on the results. [16]

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IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011POWER PLANT INSTRUMENTATION

( Common to Electronics & Instrumentation Engineering andInstrumentation & Control Engineering)



1. Differentiate between Solar and Wind Power generation schemes. [16]


(a) Trivector meter .

(b) Moving coil type D’ Arsonial meter. [16]

3. Explain the principle of CO monitor with a neat diagram. [16]

4. With the help of neat sketch clearly explain about furnace control systems. [16]

5. Differentiate between the Pulverizer control and Deaerator level controls? [16]

6. What is the role of pressure measurement in Gland steam exhaust pressure controlwith Generator cooling system? [16]

7. Explain in detail the working of Orsat flue gas analyzer? [16]

8. Discuss in detail the method of monitoring CO2 and NO2 present in flue gases withneat sketches? [16]

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1. Explain with necessary diagrams generation of powers in tidal mills. [16]

2. Explain briefly

(a) Heterodyne method of measuring frequency.

(b) Wien bridge circuit for the measurement of frequency. [16]

3. Explain how the air flow rate is measured in a power plant with a relevant diagram.[16]

4. With schematic flow diagram explain Drum type Boiler. [16]

5. Describe with a neat sketch, the principle and constructional details of B.F.P re-circulation control? [16]

6. Explain in detail about the Generator cooling system in power plants? [16]

7. Describe with a neat sketch, the principle, working and constructional details ofTrim type analyzer? [16]

8. Discuss in detail the method of monitoring Hydro carbons and Oxidants present influe gases with neat sketches? [16]

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1. Explain the importance of instrumentation in hydroelectric power plant. [16]

2. What is a low power factor wattmeter? Explain the salient features of it with aneat diagram. [16]

3. Describe with a neat sketch the magnetic float type mechanism employed in boilerfeed water control. [16]

4. What is an economizer? Is temperature measurement essential? Explain in detailhow temperature measurement is made? [16]

5. Explain in detail with neat sketches Pulverizer control systems used in powerplants? [16]

6. Differentiate the condenser vacuum control and Gland steam exhaust pressure con-trol used in power plants? [16]

7. Write a short notes on:

(a) Infrared type analyzer

(b) Thermal conductive analyzer. [8+8]

8. List the different types of detectors used in chromatography. Explain the principleof thermionic emission type of detector with a neat schematic? [16]

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1. Explain the importance of instrumentation in hydroelectric power plant. [16]

2. Explain the principle of a basic potentiometer used for the measurement of DCvoltage. What is meant by standardization? [16]

3. Describe with a neat sketch the magnetic float type mechanism employed in boilerfeed water control. [16]

4. Explain in detail with neat sketches control system of main header pressure usedin power plants. [16]

5. Explain the different types of pulverizers used in power plants? Discuss its meritsand demerits? [16]

6. What is the role and importance of a Generator in turbine monitoring and controlwith schematic representation? [16]

7. Write a short notes on:

(a) Infrared type analyzer

(b) Thermal conductive analyzer. [8+8]

8. Define chromatography. How do you classify chromatography? Explain the princi-ple of a gas chromatography? [16]

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IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011INFORMATION RETRIEVAL SYSTEMS

(Information Technology)Time: 3 hours Max Marks: 80


? ? ? ? ?

1. Explain the following:-

(a) Selective Dissemination of Information

(b) Index Data search

(c) Document database search. [5+6+5]

2. Discuss the functions of an Information Retrieval System. [16]

3. (a) Explain the concept of catalogs.

(b) What is information extraction? Explain its concepts. [8+8]

4. (a) Explain about stemming process.

(b) Explain porter stemming algorithm. [8+8]

5. Explain the term frequency algorithm with a suitable example. [16]

6. Compare and contrast Manual Clustering and Automatic Term Clustering. [16]

7. Discuss about selective dissemination information search techniques with examples.[16]

8. Discuss in detail the measurement example of TREC including its results. [16]

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? ? ? ? ?

1. (a) Differentiate Private Index file and DBMS.

(b) Explain about objectives of Information Retrieval System. [8+8]

2. (a) What is a contiguous word phrase? Explain its concept.

(b) Write a brief note on Information Retrieval System capabilities. [8+8]

3. (a) Briefly explain about Automatic Indexing.

(b) Explain about indexing and describe the various indexing processes. [8+8]

4. (a) What are the data files used in k-stem system?

(b) Describe Dictionary look-up stemmers. [8+8]

5. Describe in detail the issues and concepts involved in Hypertext Linkages. [16]

6. Compare and contrast Manual Clustering and Automatic Term Clustering. [16]

7. Write short notes on:

(a) Similarity Measures and Ranking.

(b) Hidden Markov Models Techniques. [8+8]

8. Explain about importance of hardware in text search algorithms. [16]

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? ? ? ? ?

1. Explain the following:-

(a) Selective Dissemination of Information

(b) Index Data search

(c) Document database search. [5+6+5]

2. What are the similarities and differences between the use of fuzzy searches andterm masking? What are the potential for each to introduce errors? [16]

3. Explain the concept of automatic indexing and describe various indexing processes.[16]

4. Describe the similarities and differences between stemming algorithms and n-grams.Describe how they affect precision and recall. [16]

5. Explain in detail about the following:

(a) Simple term Frequency Algorithm.

(b) Inverse Document Frequency. [8+8]

6. (a) What are the two types of clustering?

(b) Discuss a variety of specific techniques to create a thesaurus cluster. [6+10]

7. (a) Discuss about relevance feed back technique.

(b) How do you expect that relevance feed back using only positive judgments willaffect the precision and recall of an information system? Explain. [8+8]

8. (a) How finite state Automata is used for hardware and software searchers?

(b) Construct finite state automata for each of the following set of terms:HE, SHE, HER, HERE, THERE, SHEAR.Be sure to define the three sets I, S, P along with providing the state drawing.

[8+8]

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? ? ? ? ?

1. Write short notes on:

(a) Private Index file

(b) Digital library

(c) Data warehouse

(d) Information Retrieval System. [4×4=16]

2. Describe about various standards used in Information Retrieval Systems. [16]

3. (a) What is an Indexing process? Explain its concept.

(b) Explain about indexing by concept. [8+8]

4. (a) Describe briefly about the concepts of Signature File Structure.

(b) Describe briefly about the concepts of Porter Stemming Algorithm. [8+8]

5. (a) What is the goal of Natural language processing? Explain.

(b) What information is available in a natural language based indexing that isnot available in normal statistical systems? What effect does this have on thesearch process? [8+8]

6. List out the various techniques in Automatic Term Clustering. Explain. [16]

7. (a) Discuss about relevance feed back technique.

(b) How do you expect that relevance feed back using only positive judgments willaffect the precision and recall of an information system? Explain. [8+8]

8. Explain about importance of hardware in text search algorithms. [16]

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IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011INFORMATION SECURITY

( Common to Information Technology and Computer Science & SystemsEngineering)



1. (a) Explain about how the Internet standards and RFCs.

(b) Explain how Address Resolution Protocol table becomes a victim for attacks.[8+8]

2. (a) Explain with a neat illustration the automatic key distribution.

(b) Explain the various steps involved in the HMAC algorithm. [8+8]

3. (a) Differentiate between Public key cryptography and Digital signature with rel-evant examples.

(b) Compare version 4 with version 5 of Kerberos. [8+8]

4. (a) What is Radix-64 format? Explain how both PGP and S/MIME perform theRadix-64 conversion is performed.

(b) Describe the five principal services that Pretty Good Privacy (PGP) provides.[8+8]

5. (a) Discuss about the documents regarding IPSec protocol?

(b) Describe any four ISAKMP payload types listing the parameters of the pay-load? [8+8]

6. Explain in detail an open encryption and security specification designed to protectcredit card transactions on the internet? [16]

7. (a) Draw the figure showing VACM logic and explain?

(b) The encryption scheme used for UNIX passwords is one way; it is not possibleto reverse it. Therefore, would it be accurate to say that this is, in fact, ahash code rather than an encryption of the password. [8+8]

8. (a) What can be the two main attacks on corporate networks?

(b) Give a detailed description of the two approaches to intrusion detection?[4+12]

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1. (a) “Gaining control over the Routing tables at layer 3 is one of the attacks” -explain how Route tables modification is crucial.

(b) Explain how Buffer overflow is created for any known platforms (eg., WIN-DOWS NT / LINUX). [8+8]

2. (a) With neat illustration explain Advanced Encryption Standard algorithm (AES).

(b) Explain the importance of Secure Hash functions with relevant examples.[8+8]

3. (a) Explain what each of the following means used in Kerberos:

i. Authentication server

ii. Ticket Granting server

iii. Kerberos realm

iv. Kerberos principal.

(b) Explain the three alternative authentication procedures that X.509 uses acrossvarious applications. [8+8]



5. (a) What are SA selectors? How there are used in filtering outgoing traffic to mapit a particular SA?

(b) What are the features of Oakley algorithm? Discuss the three basic require-ments that must be satisfied in cookie generation. [8+8]

6. Write notes on:

(a) Alert Protocol

(b) SET Participants

(c) Padding in SSL and TLS. [16]

7. (a) What are the goals for key management in SNMPV3?

(b) Explain the nature of the virus?

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(c) What are the deficiencies of SNMPV1? [6+6+4]

8. (a) What are the three main actions of a packet filter?

(b) Give a detailed note on trusted systems? [6+10]

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1. (a) “Gaining control over the Routing tables at layer 3 is one of the attacks” -explain how Route tables modification is crucial.

(b) Explain how Buffer overflow is created for any known platforms (eg., WIN-DOWS NT / LINUX). [8+8]

2. (a) What is a cipher block mode of operation? Explain the use of these modes ofoperation for the block ciphers for encipherment,

(b) Describe the different methods of Message authentication. [8+8]

3. (a) Explain the procedure involved in RSA public-key encryption algorithm.

(b) Explain what Kerberos is and give its requirements. [8+8]



5. (a) Distinguish between transport mode AH and tunnel mode AH. ?

(b) For the Oakley aggressive key exchange, indicate which parameters in eachmessage go in which ISAKMP payload type? [8+8]

6. Give a brief note on:

(a) Business requirements for SET

(b) Key features of SET

(c) SET participants. [5+5+6]

7. (a) Draw the block diagram of traditional SNMP manager and explain its role?

(b) With a neat diagram illustrate the typical steps in the Digital Immune Systemoperation? [8+8]

8. (a) What are two default policies that can be taken in a packet filter if there is nomatch to any rule? Which is more conservative? Explain with example rulesets both the policies?

(b) What are the advantages of decomposing a user operation into elementaryactions?

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(c) What are false negatives and false positives? [6+6+4]

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1. (a) Explain about how the Internet standards and RFCs.

(b) Explain how Address Resolution Protocol table becomes a victim for attacks.[8+8]

2. Write about the following Secure hash functions:

(a) SHA-1

(b) MD5

(c) HMAC. [6+5+5]

3. (a) Alice and Bob wish to share private messages, where each of them of twoseparate keys generated. What kind of strategy would you suggest to ensureconfidentiality, key management and authentication for the conversation be-tween Alice and Bob? Explain the strategy and also highlight the design issuesrelated to the strategy proposed.

(b) Describe the X.509 version 3 in detail. [8+8]

4. (a) Explain the general format of a PGP message with a pictorial representation.

(b) What is a Certification Authority and explain its role in S/MIME. [8+8]

5. (a) What are the security services provided by IPSec at the IP layer?

(b) Explain Authentication header protocol in detail? [6+10]

6. (a) Explain the concept of linking two messages intended for two different recipi-ents adapted in SET?

(b) Discuss SSL record protocol operation in detail? [8+8]

7. (a) Draw the block diagram of traditional SNMP manager and explain its role?

(b) With a neat diagram illustrate the typical steps in the Digital Immune Systemoperation? [8+8]

8. (a) What is a firewall? What is its functionality? What are its limitations?

(b) What are the three main components of distributed intrusion detection? Dis-cuss about agent architecture? [8+8]

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IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011HUMAN COMPUTER INTERACTION



? ? ? ? ?

1. (a) Discuss the impact of ineffecient screen design on processing time with anexample

(b) Discuss the chronological history of the internet [8+8]

2. Compare and constrast the graphical user interface and the web user interface [16]

3. Discuss the important human characteristics which have influence on interface andscreen design [16]

4. (a) State the screen design goals.

(b) Discuss how a poor screen design can distract the user and what a user expectsin good screen design. [4+12]

5. What are the guidelines for selecting the proper device-based control? Explain indetail. [16]

6. Explain in detail about the factors considered in choosing colors. [16]

7. Illustrate the following specification methods with suitable examples.

(a) State charts

(b) Grammers [8+8]

8. (a) What are various type of mouses. Distinguish their operations.

(b) Compare mouse and joystick. [8+8]

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? ? ? ? ?

1. (a) Discuss the impact of ineffecient screen design on processing time with anexample

(b) Discuss the chronological history of the internet [8+8]

2. (a) Compare the application oriented approach and object oriented approach indesigning GUI. [8]

(b) Discuss the following principles of user interface design

i. Transparency

ii. Simplicity

iii. Responsiveness

iv. Recovery [4× 2 = 8]

3. What is meant by basic business functions? Discuss indetail the process of deter-mining basic business functions [16]

4. Discuss the following in respect of designing a web site.

(a) Browsing

(b) Search facilities. [8+8]

5. (a) Explain how menu choices can be selected

(b) What are unavailable menu choices, toggled menu items and mark toggles.[8+8]

6. (a) Give a brief note about icon animation and audition.

(b) Explain what are the issues to be considered in combining mediums? [8+8]

7. Give a brief note about the features of user - interface building tools. [16]

8. Explain the functioning of the following interactive devices

(a) Track ball

(b) Graphics tablet

(c) Touch-pad

(d) Joystick [4+4+4+4]

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? ? ? ? ?

1. (a) Discuss the history of screen deisgn

(b) Compare a 1970’s screen, a 1980’s screen, and a 1990’s and beyond screen[8+8]

2. (a) Compare the print page design and web page design

(b) What is meant by extranet? How it is different from internet? [10+6]

3. Discuss about users tasks and needs which are also important in user interfacedesign [16]

4. List various statistical graphic forms and explain surface charts, bar graphs andhistograms with suitable examples. [16]

5. Identify the characteristics and capabilities of the following device-based controls.

(a) Joystick

(b) Track ball

(c) Light pen [16]

6. (a) What are the issues to be considered in choosing proper words.

(b) What are common message types, explain briefly. [8+8]

7. Explain the role of software engineering tools in building the user interface. [16]

8. (a) Distinguish between QWERTY and ABCDE style.

(b) What are the function keys? What are their advantages? [8+8]

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? ? ? ? ?

1. (a) Discuss the history of screen deisgn

(b) Compare a 1970’s screen, a 1980’s screen, and a 1990’s and beyond screen[8+8]

2. Discuss the following charateristis in respect of web pages

(a) Page size

(b) Page rendering

(c) Page layout

(d) Page resolution

(e) User focuss

(f) Page navigation

(g) Sense of place

(h) Page independence. [8× 2 = 16]

3. Discuss about users tasks and needs which are also important in user interfacedesign [16]

4. Discuss briefly about intranet and extranet design guidelines. [8+8]

5. (a) What are factors upon which selection of the proper input device depends?

(b) What are the typical characteristics of proper screen-based controls? [8+8]

6. What are the issues to be considered in designing title bar and message box. [16]

7. Give a brief note about different widget supports and interface features supportedin user-interface building tools. [16]

8. Explain briefly about the features of following key board layouts:

(a) QWERTY layout

(b) DVORAK layout [8+8]

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IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011AUTOMATA AND COMPILER DESIGN(Electronics & Computer Engineering)



1. (a) What is the total computing time to first converting an NFA to DFA and thenconverting the DFA to RE? Explain.

(b) Construct a DFA equivalent to the NFA, M = (p, q, r, s, 0, 1, δ, p, s)where δ is given by the following state table. [8+8]

PS NS,INPUT0 1

P in PS represents p,q Pinitial state

q r rr s -

S in PS represents p sfinal state

2. Construct a Context Free Grammar(CFG) that generates all even integers up to998. [16]

3. Describe, in detail, an operator precedence parsing with an example. [16]

4. Consider the following:E → E1#TE.val := E1.val ∗ T.valE → TE.val := T.valT → T1&FT.val := T1.val ∗ F.valT → FT.val := F.valF → numF.val := num.Lexval

(a) Draw an annotated parse tree for an expression: a # b & c # d & e

(b) Compute the ‘E.val’ for root of an annotated parse tree of the following ex-pression: 2 # 3 & 5 #6 & 4. [8+8]

5. (a) What is Type Expression? Write type Expressions for the following type

i. A Two dimensional array integers (i.e. an array of arrays) whose rows areindexed from 0 to 9 and whose columns are indexed from -10 to 10.

(b) What is Type System? Discuss static and dynamic Checking of types? [8+8]

6. (a) What are the advantages and disadvantages of heap storage allocation strate-gies ?

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(b) What are the advantages and disadvantages of Static storage allocation strate-gies? [8+8]

7. (a) Define the following:

i. Basic Block

ii. Local Optimization

iii. Global Optimization.

(b) Explain about Algebraic Transformations?

(c) “Copy propagation Leads to Dead code” - Justify the statement. [6+6+4]

8. Write and explain about DAG? [16]

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1. (a) What are the elements of Finite Automata? Explain

(b) Construct an NFA and DFA for the Regular Expression:(0 + 1)*(00 + 11) 110. [6+10]

2. Construct an LL(1) parse table for the following grammar:E → TE′

E′ → +E |∈T → FT′

T′ → T |∈F → PF′

F′ → ∗F′ |∈P → (E) |a| b. [16]

3. Consider the grammar: S → (S) |aConstruct the DFA for SLR(1), CLR(1), and LALR(1) parsers and find the numberof states in each of the parser. [16]

4. Let synthesized attribute, Val give the value of the binary number generated by Sin the following grammar. For example, on input 101.101, S.Val = 5.625.S → L • L |LL → LB |BB → 0 |1Write synthesized attribute values corresponding to each of the productions todetermine the S.Val. [16]

5. Explain the following:

(a) Type checking of Expressions

(b) Translation scheme for checking the type of statements. [8+8]

6. (a) Explain the Dynamic storage allocation facilities provided by C language?

(b) What is dangling reference in storage allocation? Explain with an example.[8+8]

7. (a) What is global data flow analysis?

(b) Write briefly about various loop optimization techniques? [8+8]

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8. Construct DAG for the following basic block:d: = b+ce: = a+bb: =b*ca: = e-d. [16]

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1. (a) Define Alphabets, Strings, and Languages. Give two examples of each.

(b) Consider the line number 4 of the following ‘C’ program:int main() /* Line 1 */ /* Line 2 */

int i, n; /* Line 3 */fro(i=0, i<n, i++); /* Line 4 */

/* Line 5 */

What is the compiler’s response about this line while creating the object mod-ule? Explain. [9+7]

2. Compute the FIRST and FOLLOW sets of each of the non-terminals for the fol-lowing grammar:P → AQRbe |mn |DEiA → ab |∈Q → q1q2 |∈R → r1r2 |∈D → dE → e. [16]

3. Consider the following grammar:E → E + T |TT → T ∗ F |FF → (E) |a

(a) Construct the SLR parse table.

(b) Find the moves made by the parser on the input string: a + a * a. [10+6]

4. (a) What is the necessity of creating an intermediate code form during the com-pilation process?

(b) Describe the various forms of intermediate code highlighting the utility of eachform. [6+10]

5. (a) Write the algorithm to test structural equivalence of two type expressions sand t.

(b) Write about type graph. [8+8]

6. Write and Explain about algorithm for construction of equivalence trees? [16]

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7. (a) Explain Briefly about the Global Optimization?

(b) Distinguish machine dependent and machine independent optimization.[8+8]

8. (a) Explain the concept of calculating cost of instructions

(b) Consider below addressing codes along with associated costsMode Added Costabsolute 1register 0indexed 1indirect register 0indirect indexed 1

Compute cost of following set of statements

i. mov b, R0Add c , R0Mov R0,a

ii. add R2, R1Mov R1,a

iii. Mov b , aAdd c , a. [8+8]

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1. (a) Design a DFA that accepts the language over the alphabet, Σ = 0, 1, 2where the decimal equivalent of the language is divisible by 3.

(b) Compare compiler and an interpreter with the help of suitable examples. [8+8]

2. Construct the predictive parse table for the following grammar:E → E + T |TT → T ∗ F |FF → (E) |xy |xz. [16]

3. Build the LALR parse table for the following augmented grammar:A′ → AA → (A) |a. [16]

4. (a) What is an attribute grammar? Give an example.

(b) Generate the three-address code for the following Boolean expression:NOT ( P < Q AND R < S OR NOT ( T < U AND R < Q ) ). [6+10]

5. (a) what is meant by Structural Equivalence of type Expression? Write a function,which will test the structural equivalence of two type expressions?

(b) Discuss briefly about type conversions. What is Coercion? [10+6]

6. (a) Explain scope of variables with a C program when program contains nestedblocks.

(b) Explain the concept of lexical scope with nested procedures with suitableexamples. [8+8]

7. Explain about Data-Flow analysis of structured flow graphs. [16]

8. Write and explain about object code forms? [16]

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IV B.Tech I Semester Supplementary Examinations, February/March 2011

VIBRATIONS AND STRUCTURAL DYNAMICS

(Aeronautical Engineering) Time : 3 hours Max. Marks: 80



*****

1. (a) Explain the following:

(i) Resonance

(ii) Simple harmonic motion [6]

(b) Differentiate between damped and undamped oscillations. [5]

(c) Determine equivalent viscous damping coefficient for a coulomb damping system?

[5]

2. The static deflection of the vibrometer is 15 mm. The instrument when attached to a

machine vibrating with a frequency of 140 cycles per minute records relative

amplitude of 0.03 cm. Find out for the machine (a) the amplitude of vibration (b) the

maximum velocity of vibration and (c) the maximum acceleration. [16]

3. (a) Find the principal coordinates, for the system shown in Fig. 1. [10]

(b) Show that the Eigen vectors of a system are orthogonal with respect to the mass

and stiffness matrices. [6]

4. Determine the natural frequencies of a uniform simply supported beam of length L,

elastic modulus E, density , area A and moment of inertia I. [16]

5. A rotor of mass 10 Kg is mounted on a shaft of stiffness 4000 N/m at the rotor. The

equivalent damping coefficient of the system is 220N-sec/m. When the shaft rotates at

600 rpm, the power dissipated is 9 watts. Determine the eccentricity of the rotor. [16]

Fig. 1

Set No.1 Code No: M2121

R07

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6. Determine the two lowest natural frequencies approximately for the torsional system

shown in Fig. 2 using Rayleigh-Ritz method. Take cubic polynomials as trial

functions. Take rigidity modulus G = 80 x 109 N/m

2, Polar moment of inertia, J=

1 x10-5

m4 and torsional stiffness of the spring kt= 4 x 10

6 N-m/rad. [16]

7. Use modal analysis to determine the steady state response of the system shown in Fig.

3 when the mass 2m is subjected to a force of . [16]

8. A one degree of freedom system is initially at rest in equilibrium and subject to a

force of . Use Duhamel’s integral to determine the response of the

system. [16]

1.5 m

Fig. 2

m 2m

Fig. 3

Code No: M2121 Set No.1 R07

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*****

1. (a) What are different mechanisms of damping? Explain. [8]

(b) Explain D’Alembert’s Principle. [4]

(c) Explain degrees of freedom. [4]

2. A commercial vibration pick-up has a damped natural frequency of 4.5 Hz and a

damping ratio of 0.5. What is the range of impressed frequency of at which the

amplitude can be read directly from the pick-up with an error not exceeding 2% of the

actual amplitude? [16]

3. For the system shown in Fig. 1, assuming small displacement in the plane of the

paper,

(a) Write differential equations of motion

(b) Obtain the frequency equation.

The pendulum rod is stiff and is pivoted at point O. [16]

4. Obtain the general solution for the free vibration of a string tightly stretched between

two fixed supports. [16]

5. (a) Obtain an expression for whirl amplitude of a light shaft having a single disc with

damping. [8]

m2

m1

Fig. 1


R07

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(b) A rotor of mass 5 Kg is mounted midway on a 1 cm diameter shaft supported at

the ends by two bearings. The bearing span is 50 cm. The centre of gravity of the

disc is 0.02 mm away from the geometric centre of the rotor. If the system rotates

at 2500 r.p.m, determine the amplitude of steady state vibrations. Neglect

damping. Take young’s modulus of elasticity as 2 x 1011

N/m2. [8]

6. Use Rayleigh’s quotient to approximate the lowest natural frequency of a simply

supported beam with a concentrated mass m at its midspan. Take trial function as

. [16]

7. For the damped two degree of freedom system shown in Fig. 2, determine the

vibrartory response of the masses for the initial conditions:

x1 = 1.5 and x2 = 1 at time t = 0 and x1 = x2 = 0 at time t = 0. Use modal analysis

with proportional damping. [16]

8. Use Duhamel’s integral to determine the response of an under damped one degree of

freedom system of mass m and natural frequency n when the excitation force is unit

step function, u(t). [16]

Fig. 2

m

Code No: M2121 Set No.2 R07

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Answer any Five Questions


*****

1. (a) Define degrees of freedom. Differentiate between discrete and continuous systems

with respect to degrees of freedom. [5]

(b) Determine equivalent viscous damping coefficient for a hysteretic damping

system. [6]

(c) Find the amplitude of the sum of the two harmonic motions [5]

x1 = 1.5 sin (t+2) x2 = 2 sin (t-1.0)

2. (a) Derive an expression for the steady state amplitude in forced vibrations. [6]

(b) A 1200 Kg machine is placed on a vibration isolator of stiffness 1 x 106. The

machine is given an initial displacement of 5 cm and released. The amplitude of

the machine is 1 cm after 10 cycles. Determine the damping coefficient of the

system. [10]

3. A mild steel shaft of 12 mm diameter is built into walls at both ends. It carries two

flywheels, each at 0.25 m from a wall and also 0.25 m from each other. The flywheel

is of 0.3 m diameter and 50 mm thick. Find the two natural frequencies in torsion.

[16]

4. Determine the natural frequencies and mode shapes for the slender rod shown in Fig.

1. Use x and as the generalised coordinates. [16]

5. A disc of mass 6 kg is mounted midway between bearings which may be assumed to

be simple supports. The bearings span is 56 cm. The steel shaft which is horizontal is

9 mm in diameter. The CG of the disc is displaced 3mm from the geometric center.

The equivalent viscous damping at the centre of the disc-shaft may be taken as 49 N-

sec/m. If the shaft rotates at 800 rpm, find the maximum stress in the shaft.

[16]

3L/4

x

Fig. 1


R07

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6. Use Rayleigh’s quotient to approximate the lowest natural frequency of a cantilever

beam with a concentrated mass m at its end. Take trial function as

.

[16]

7. Show that the mode shapes of the system shown in Fig. 2 are orthogonal. [16]

8. Use Duhamel’s integral to determine the response of an under damped one degree of

freedom system of natural frequency n and damping ratio when subjected to a

harmonic excitation of Fo sin t. [16]

m 2m

Fig. 3

Code No: M2121 R07 Set No.3

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Answer any Five Questions


*****

1. (a) Explain hysteretic damping. [6]

(b) Find the amplitude of the sum of the two harmonic motions [5]

x1 = 5 sin (1.5*t-1) x2 = 2sin (1.5*t+3)

(c) Differentiate between Newton’s second law of motion and D’Alembert’s

principle. [5]

2. (a) A machine of 100 Kg is mounted on an elastic foundation of stiffness 2 x 106 N/m.

The machine is subjected to a harmonic force of magnitude 1200 N at an operating

frequency of 180 rad/s. If the steady state amplitude of the machine is measured as

2.1 mm, find the damping ratio of the foundation. [10]

(b) Derive expression for logarithmic decrement in damped free oscillations. [6]

3. A torsional system has an inertia of 1.2 kg-m2 and a torsional stiffness 200 N-m/rad. It

is acted upon by a torsional excitation at 120 r.p.m. Determine the parameter of the

absorber to be fixed to the main system if it is desired to keep the natural frequency at

least 20% away from the impressed frequency. [16]

4. Solve the eigen value problem for a uniform string fixed at both ends and plot the first

two eigen functions. [16]

5. A rotor having a mass 10 kg is mounted on a 10 mm horizontal steel shaft midway

between the bearings that are 0.8 m apart. The centre of gravity of the disc is 5 mm

from its geometric centre. If the damping factor in the system is 0.1, find the

maximum stress at the operating speed of 600 r.p.m. [16]

6. Determine the lowest natural frequency of a uniform simply supported beam using

Rayleigh Ritz method. Use the trial functions as

! " #$ %# &

" ' [16]

Set No.4 Code No: M2121 R07

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7. Use modal analysis to determine the steady state response of the system shown in

Fig. 1 when the mass m is subjected to a force of ((! [16]

8. A press of mass m is mounted on an elastic foundation of stiffness k. During

operation the force applied to the press builds up to its final value Fo in a time to as

shown in Fig. 2. Determine the response of the press for (a) t < to (b) t > to.

[16]

2x1 x2

2m m

Fig. 1

O to

Fo

t

Fig. 2

Code No: M2121 R07 Set No.4

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IV B.Tech I Semester Supplementary Examinations, Feb/Mar 2011BIO INFORMATICS

(Bio-Technology)Time: 3 hours Max Marks: 80


? ? ? ? ?


(a) Domain and Domain name

(b) Modem. [8+8]

2. Describe the Richard Owen’s Contribution to Evolutionary Theory? [16]

3. Describe in detail about the Shot gun large sequencing method? [16]

4. What is sequence alignment? Describe the significance of sequence alignment indetail? [16]

5. What parameters you can find in PDB files. Explain with one example you havestudied. [16]

6. Discuss the secondary databases of bioinformatics and discuss their applications inbiological research. [16]

7. Describe in brief about the tools available in EXPASY. [16]

8. What is dynamic programming method. Explain with an example. [16]

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? ? ? ? ?

1. What is Bioinformatics? Describe its scope in modern biology? [16]

2. Describe the Charles Darwin Contribution to Evolutionary Theory? [16]

3. Describe the following:

(a) Physical mapping of DNA

(b) Genetic mapping of DNA. [8+8]

4. What is sequence alignment? Describe the significance of sequence alignment indetail? [16]

5. What is a database ? How do you organize and manage biological databases? [16]

6. How secondary databases in bioinformatics differ in organization and managementfrom primary databases. Explain with examples. [16]

7. Describe in brief about the tools to find out secondary and tertiary structures ofproteins at EXPASY. [16]

8. Explain briefly about CLUSTALX & CLUSTALW programs. [16]

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? ? ? ? ?

1. What is File Transfer Protocol (FTP)? Describe different types of FTP’s? [16]

2. Describe the Richard Owen’s Contribution to Evolutionary Theory? [16]


(a) Physical mapping of DNA

(b) Genetic mapping of DNA. [8+8]

4. Describe the steps in Needlemen-Wunsch algorithm for Global sequence alignment?[16]

5. Discuss about the molecular modeling databases that are available on internet andstate their importance? [16]

6. Discuss the applications of bioinformatics tools available in Swissprot. [16]

7. Describe in brief about EXPASY and state its applications in bioinformatics. [16]

8. Explain how you will trace out different types of mutations using multiple sequencealignments. [16]

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? ? ? ? ?


(a) Routers

(b) Fully Qualified Domain Name (FQDN). [8+8]

2. Describe the Charles Darwin Contribution to Evolutionary Theory? [16]

3. What is genome sequencing? Describe its application? [16]

4. Describe the FAST algorithm? [16]

5. Define Database? Briefly explain the biological databases? [16]

6. Discuss briefly the search and analysis tools available in PIR. [16]

7. Describe in brief about the tools available in EXPASY. Explain them with suitableexamples. [16]

8. Explain briefly about CLUSTALX & CLUSTALW programs with an example. [16]

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Documents

Code No. M0121 /R07 Set No.1 GEOTECHNICAL ENGINEERING – IIitsourplace.weebly.com/uploads/8/0/6/5/8065773/is62-67.pdf · GEOTECHNICAL ENGINEERING – II (Civil Engineering) ... What