EKT Sample Papers

8/8/2019 EKT Sample Papers

http://slidepdf.com/reader/full/ekt-sample-papers 1/76

SECTION

<<<<<<EKT-ELECTRONICS AND COMMUNICATION>>>>>>>>

1. Sampling is helpful for--------------------------------------------------------------------

-----------------------quantisization

2. Sound waves are (It came in both papers)--------------------------------------------

--------------------------longitudinal

a .Longitudinal b. Transverse c. Electro magnetic d. Gravitational

3. If two identical capacitors connected parallel then effective capacitance..?---

-------------------------------C=C1+C2

4. Wein bridge is used to measure---------------------------------------------------------

------------------------frequencies

5. Which configuration has min distortion..?-------------------------------------------

----------------------------class A

a. CLASS A b. CLASS B c. CLASS C d. CLASS AB

6. Which of the following is not system software..?------------------------------------

----------------------------compiler

a. Linker b. Loader. c. Compiler d. none

7. Min No, of NAND gates required to realize the function AB---------------------

---------------------------------2

8. Flip Flops mainly used for---------------------------------------------------------------

-------------------------memory elements



9. Which is noise free-------------------------------------------------------------------------

-----------------------FM

a. AM b. FM.. c. Both d .none

10. Terrestrial TV propagation System used in India---------------------------------

------------------------------PAL

a. PAL b. NTSC c. DFS

11. Skin depth of an waveguide doesn¶t depend on------------------------------------

----------------------------temperature

a. freq b. temp c .length of the conductor d.Type of material

12. Transformer rating expressed in------------------------------------------------------

-------------------------kilo Volt-ampere (KVA)

13. Electrical energy can be measured using--------------------------------------------

--------------------------kilo watt-hour (kWh)

14. An ideal opamp has----------------------------------------------------------------------

-----------------------Infinite B.W

15. Restivity range of semiconductor-----------------------------------------------------

-------------------------10 ^ -4 to 10 ^7

16. They give modulation index, carrier power ask us to find total power-------

--------------------------------Pt=Pc(1+(m*m/2))



17. In JFET if Vds increased what happen to Ids.?------------------------------------

----------------------------Ids decreases

18. They give some freq and ask us to find Image Freq«?------------------------------------------------------Fi=F(given)+2(I.F=455kHz)

19. In an Unbiased semiconductor the current is zero because of------------------

-----------------------------transistor in cut-off region

20. If BJT is in Cutoff region---------------------------------------------------------------

------------------------across load

A. Max voltage appears across load

B. a.Max voltage appears across Transistor.

21. Decibel used to measure----------------------------------------------------------------

----------------------power level

a. power b. voltage c .current d .power level

22. In RC coupling the value of C should be high because---------------------------

--less reactance--signal couples well---no distortion of signal

23. An ideal voltage source charges capacitor in---------------------------------------

-------------------------instantaneously

24. They give Vmax and Vmin and ask us to find modulation index?-------------

-------------------------------m= ((Vmax-Vmin}/ (Vmax+Vmin)



25. A voltage source of 5v with internal resistance 2 ohm can transfer max

power to load when the value of load resistance is-----2 ohm

26. In a communication system, noise is most likely to get into the system

(A) At the transmitter

(B) In the channel============answer

(C) In the information source

(D) At the destination

27. When modulation frequency is doubled, the modulation index is halved,and the modulating voltage remains constant, the modulation system

(A) Amplitude modulation

(B) Phase modulation

(C) Frequency modulation==========answer

(D) Angle modulation



28. Impedance inversion may be obtained with

(A) A short ? circuited stub

(B) An open ? circuited stub

(C) A quarter ? wave line================answer

(D) A half ? wave line

29. HIGH frequency waves are

(A) Observed by the F2 layer

(B) Reflected by D layer===========answer

(C) Capable of use for long-distance communication on the moon

(D) Affected by the solar cycle

30. Which one of the following terms does not apply to the Yagi-uda array?



(A) Good band width

(B) Parasitic elements

(C) Folded dipole

(D) High gain============answer

31. A duplexer is used

(A) To couple two different antennae to a transmitter without mutual

interference

(B) To allow one antenna to be used for reception or transmission withoutmutual interference========answer

(C) To prevent interference between two antennae when they are connected to

receiver

(D) To increase the speed of the pulses in the pulsed radar

32. Indicate which of the following system is digital



(A) Pulse ? Position modulation

(B) Pulse ? Code modulation=========answer

(C) Pulse ? Width modulation

(D) Pulse ? Frequency modulation

33. A forward error correcting code corrects errors only

(A) Requiring partial retransmission of the signal

(B) Requiring retransmission of entire signal

(C) Using parity to correct to errors in all cases

(D) Requiring no part of the signal to be transmitted==========answer

34. A typical signal strength received from a geosynchronous communication

satellite is of the order of

(A) A few milli watts



(B) Kilo watts

(C) Watts

(D) Few pico watts========answer

35. Telephone traffic is measured

(A) With echo cancellers

(B) By the relative congestion

(C) In terms of the grade of service

(D) In erlangs===================answer

36. Positive logic in a logic circuit is one in which

(A) Logic 0 and 1 are represented by 0 and positive voltage

respectively==========answer

(B) Logic 0 and 1 are represented by negative and positive voltages

respectively



(C) Logic 0 voltage level in higher than logic 1 voltage level

(D) Logic 0 voltage level is lower than logic 1 voltage level

37. A half-adder can be made from

(A) Two NAND gates

(B) A NOT gate and an OR gate

(C) An AND gate and an OR gate

(D) An AND gate and an X-OR gate=========answer

38. Which of the following devices has its characteristics very close to that of

an ideal current source?

(A) Field effect transistor

(B) Transistor in common bas mode

(C) Zener diode============answer



(D) MOSFET

39. The main use of a common base transistor amplifier is

(A) As voltage amplifier===============answer

(B) Current amplifier

(C) For matching a high source impedance to a low load impedance

(D) For rectification of a.c. signal

40. A class-B amplifier is biased

(A) Just at cut-off===============answer

(B) Nearly twice cut-off

(C) At mid point of load line

(D) so that IB equals jut IC



41. If the peak transmitted power in a radar system is increased by a factor of

16, the maximum range will be increased by a factor of

(A) 2 (B) 4 (C) 8 (D) 16=========== 2

42. A high PRF will (indicate the false statement)

(A) Make the returned echoes easier to distinguish from noise=======answer

(B) Make target tracking easier with conical scanning

(C) Increase the maximum range

(D) Have no effect of the range resolution

43. A solution to the ?blind speed? problem in a radar system is to

(A) Change the Doppler frequency

(B) Vary the PRF==============answer

(C) Use mono pulse



(D) Use MTI

44. The number of active picture elements in a television image depends on

(A) Fly back time======================answer

(B) CRT screen size

(C) Received band width

(D) FB ratio of receiver antenna

45. In a color TV, the three primary colors are

(A) Red, orange and blue

(B) Red, blue and green=============answer

(C) Red, green and yellow

(D) Red, orange and green



46. Polarization in a dielectric is given by===========P=(1-x)E

A. P=xE B. P= (1-x) E C.P= xeE e=permivity...x=suspectance

47.ht of geostationary satellite--------------------------------------------------------------

--------------------------------36000 Km

48.minimum freq range of satellite comm-----------------------------------------------

------------------------------------C-band(3.7-4.2MHz)

49.what happens to D-layer at day_time-------------------------------------------------

-----------------------------------ionization/absorption of signals

50.the nyquist rate of sampling is ----(2Fmax,Fmax,1/2Fmax,etc)-----------------

-------------------------------------2Fmax

51.how many electrons does the donor impurity phosphorus continue---(1,2,3,4)--------------------------------------1

52.transmission of light through optical fiber works on principle of ---(total

internal reflection,total internal refraction,etc)-------reflection

53.SHF can be used for ---(radio,satellite,surface wave)------------------------------

-----------------------------------satellite

54.deviation finding in fm ?----------------------------------------------------------------

----------------------------------Phase locked loop (PLL circuit)



55.no. of frames in indian pal system ?---------------------------------------------------

-----------------------------------25 frames/second

56.which radar measure velocity ,height n distance ?----------------------------------------------------------------------CW DOPPLER radar (not simply CW)

57.when transistor in cut-off or saturation,the circuit behaves independent of

transistor-------

options----variation,stage,etc-------------------------- stage..cos it behaves like a

switch and effect of transistor stage is equivalent to switch

58.If efficiency of amplifier is 80% then its definately---(class A,B,AB,C)--------

---------------------------------------C

59.buffer is useful for---(isolation of stages,emitter follower configuration,etc)-

---------------------------------------isolation of stages

60.for transmission of MW radio.we use---(dipole,antennae on vertical

masts,etc)---------------------------------------vertical masts

61.the most severe effect of noise is seen in---

(transmitter,channel,receiver,etc)----------------------------------------channel

62.if freq deviation is 15KHZ,modulation signal 75 Khz,then theoretical BW i

upto 8th component---(150,240,480,etc)--150

63.Balanced modulator is used for removal of---(carrier,USB,LSB,etc)----------

-------------------------------------------carrier



64.In open loop systems,control signal depends upon---(human

reference,independent of output,cannot be determined,etc)----------ind of out

65.the laplace transform of 't'---(s,s^2,1/S^2,etc)------------------------------------------------------------------------1/s^2

66.at what freq is attenuation highest in optic-fiber-----------------------------------

-------------------------------------around 600 nm

67.when CCIR-B blanks signal²during vertical OR horizontal retrace???----

---------------------------------------------vertical

68.Modulation of amplitude includes-CHANGE IN AMPLITUDE,change in

freq,both,other---------------------------------amplitude change

69.Base of transistor is-HIGHLY,heavily,moderately,not doped-------------------

----------------------------------------moderately

70.CMRR for ideal Diff Amplifier is-0,unity,less,MORE THAN UNITY--------

------------------------------------------------more than 1 (infact infinity)

71.At absolute zero,valence electrons occupy---(valence band,forbidden

band,conduction band,valence electrons disappear)----------val band

72.the transition region in a unbiased diode consists of---(free

charges,immobile carriers,minority carriers,etc)------immobile

go to site www.careerairforce.nic.in for the question paper (click on model

question paper tab->EKT)



(already solved above)

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<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<END OFSECTION 1>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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SECTION-2

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<EKT-

GENERAL>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

>>>

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1.horse power is unit of----------------------------------------------------------------------

----------------------------------power



2.electron volt is unit of:---------------------------------------------------------------------

----------------------------------energy

3.what is nibble--------------------------------------------------------------------------------

---------------------------------4bits

4.centroid is concerned with: mass,mass and weight,plane area--------------------

-----------------------------------------plane area

5.which is most effective nuclear power plant or thermal power plant------------

-------------------------------------------nuclear

6.ignition quality of petrol is measured by:---------------------------------------------

--------------------------------------octane number

7.primary battery is:reversible process,irreversible process------------------------

----------------------------------------irreversible

8.what a catalyst will do---------------------------------------------------------------------

-----------------------------------increase the reaction rate

9.what is applied when opening a lock with key:coplaner force,noncoplaner

force,lever,torque----------------------------torque

10.when jet engine has most power:while leaving earth,atmosohere--------------

--------------------------------------------inc wd altitude



11.what represents the current:left hand,right hand,thumb.------------------------

--------------------------------------------thumb

12.magnetic flux density---------------------------------------------------------------------------------------------------------weber

13.noise is measured as:pitch,decibel-----------------------------------------------------

--------------------------------------decible

14.aluminum alloy is used in piston:it is light,it is strongest,it is shock less,less

wear off------------------------------------light

15.when a light is passed through a higher refractive index what will happen--

----------------------------------------------velocity decrease

16. Capacitance of a cell measured in?---------------------------------------------------

-------------------------farad

17.To made House use electric heater which metal/element is better?------------

-----------------------------aluminium

18. Internal resistance of ideal current source?----------------------------------------

-------------------------infinite

19. Integral of (dx / (xlogx))?---------------------------------------------------------------

---------------------log(log x)+c

20. Earth &geostationary satellites have same /relative------------------------------

-------------------------angular velocity



a.accleraton b.velocity c.angular velocity

21. Sound waves are--------------------------------------------------------------------------

--------------------longitudinal

A .Longitudinal B. Transverse C both D .neither.

22. Demultiplxer can called as?------------------------------------------------------------

------------------ data distributor

23. Set of instructions meant for to do some task is called.---------------------------

-------------------------Programme

24. Properties Alkali metals.----------------------------------------------------------------

------------------- * Lower densities than other metals

* One

loosely bound valence electron

* Largest

atomic radii in their periods

* Low

ionization energies

* Low

electronegativities

* Highly

reactive

25. Break down occurs in diode because of.---------------------------------------------

----------------------avalanche breakdown( more than 10 V)



26. If u wants to connect two systems through telephone line which of the

following u will use..?----------modem

A. Bus B.Modem C.Router

27. Inductor opposes sudden changes in-------------------------------------------------

--------------------Current

28. Which is not a non renewable energy------------------------------------------------

---------------------wind energy

a. petrol b.Coal c.Wind energy d.nuclear

29. Which material is widely used for making solar cell?----------------------------

------------------------silicon

30. Cell converts.------------------------------------------------------------------------------

---------------chemical to electrical

A. Chemical energy into electric energy

B. electric energy into chemical energy

31. Steel pipes made from-------------------------------------------------------------------

----------------galvanized iron

32. Human being is---------------------------------------------------------------------------

---------------closed loop system with multiple feedback

A. open loop sys¶m

B.closed loop sys¶m with single feed back.

C. closed loop sys¶m with multiple feed back.



33. If the gain of the open loop sys¶m is doubled then gain margin will

become-------------------------doubled

34. Corrosion of aluminum is not formed because of---------------------------------

---------------------epoxy paint

35. If the speed flow in pipe of diameter 6 mm is 5m/s.If this pipe is connected

to another of diameter 3 mm, then speed will be---10m/s

36. They give change in force and change in diameter of a square plate. Ask us

to find change in pressure---(change in area/change in area)

37. They give three sets of measurements .Which are sets forms triangle--------

----------the one where a+b>c where a,b,c are sides taken in any order

38. First aid of electrical shock victim----------------plug-off power-------move

victim by a wooden stick or dry clothes sideways

39. The performance (function) of fuse doesn¶t depend on--------------------------

-----(depends on both..so methinks options are incomplete)---

a. Type of material b .Length of the material..

40. Annealing makes the material... (Effect of annealing)----------------------------------heat treatment to improve softness and ductility

41. what does the symbol "j" represents in vector----------------------------90

degree anticlockwise movement (imaginary-axis)



42. Sulphation in Lead acid battery--------------------------------------crystalline

lead sulphate---affects charge storing capacity--slows charging up time

43. Transient current------------------------------------------------------------sharp

fluctuation of current

44. Principle of hydrogen bomb--------------------------------------------------nuclear

fusion

45. radio activity is the property of----------------------------------------------

elements with atomic no greater than 82 (Pb)

46. above curie temperature, magnetic material will become-------------------

non magnetic or magnetic insulator

47. series circuit current----------------------------------------------------------is same

throughout (I=I1=I2=I3=In)

48. byte= ___ bits-----------------------------------------------------------------8

49. Control and arithmetic logic section is known as-----------------------------

CPU

50.Micro computer is a ----------------------------------------------------------personal

computer

51.power factor of a resistor----------------------------------------------------1



52.hexadecimal digit-------------------------------------------------------------0-9,A-F

53.fluorescent tube related qn---------------------------------------------------choke

coil

54.change in dimension during the process of magnetisation------------------

magnetostriction

55.in nuclear reaction , conservation of-----------------------------------------mass

and energy both

56.unit of inductance-------------------------------------------------------------henry

57.petrol in india ..octane no.?---------------------------------------------------90-95

(generally 91)

58.controlling device for small load?? [related to servo motor etc.]------------

potentiometer

59.viscosity of gas directly proportional to-------------------------------------square

root of temperature

60.instruments to have wide range of scale------------------------------------

logarithmic scale

61.rating of electrolytic capacitor-----------------------------------------------farads



62.name of electric motor-both rotor and stator rotating at equal speed------

synchronous motor

63.in reversible adiabatic process, change in entropy?-------------------------0

64.calory is a measure of??------------------------------------------------------heat

energy

65.compressed air inside a tire, what will happen if air passes through a

hole??------adiabatic process

66.work done in adiabatic change in gas----------------------------------------(P1V1-

P2V2)/(gamma-1) or nR(T1-T2)/(gamma-1)

==========================================================

=================================

67. related to carnot cycle in carnot engine

68.maximum efficiency of carnot engine

here is a brief summary of the 4-steps of carnot cycle

Heat transfer from the working fluid to the low-temperature reservoir(Condenser).

Adiabatic increase in the temperature of the working fluid (Heat Pump).

Heat transfer from the high-temperature reservoir to the working fluid

(Boiler).



Adiabatic decrease in the temperature of the working fluid (Turbine).

An important conclusion from Carnot cycle analysis is that the maximum

theoretical efficiency of heat engines is directly related to:

efficiency = D(T2-T1)/T2

where:

T2 is the maximum operating temperature on absolute scale (K)

T1 is the minimum operating temperature on absolute scale (K)

For a heat engine operating between 300oC and 100oC, with a DT of 200

degrees, this maximum efficiency would be:

efficiency = 200/(300 + 273) x 100 = 34.9%

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69.something related to mix of ice and water-------------------------------------------

all exists at triple -point

70.efficiency of otto cycle----------------------------------------------------------------60

%

71.floating battery bus or something----------------------------------------------------

used in IC engines



72.longitudinal wave prorogation--------------------------------------------------------

compression and rarefraction

73.unexcited single phase synchronous motor------------------------------------------called as repulsion induction motors

74.inductance related question

75.advantage of sampling

a) simple ckt

b) high speed transmission

data=======================================================

======answer

c) all of the above

76.capacity of ecetrical cell

a) Watth

==========================================================

====================answer

b)Watt

c)ampere

d) amp/hr

77.metal to be used in electric heater



a)copper

b)nichrome=================================================

===========================answer

c) platinum

d) tungstun

78.computer ic works efficiently because

a) top-bottom

b) system

c)two stage

d) 2 state

79.func of fuse wire does not depend upon

a) itd length

b) its

radius=====================================================

=======================answer

80.material of spring should be------------------------------------------------------------

----------------------------------steel with high carbon variety

81.skin effect does not depend upon------------------------------------------------------

---------------------------------size of wire



82.aluminium does not corrode with atmosphere--------------------------------------

----------------------molecular level stability (but it does corrodein extreme enviroments like acids...but slowly)

83.thyrister is also termed as

a) dc switch

b) ac

switch=====================================================

=======================answer

c)both a& b

d) square wave switch

84.steel pipes are made through which welding----------------------------------------

------------------------------------arc welding

==========================================================

====================================================

85.a particle whose motion is described by x=asinwt, y=asinwt z=ut moves

along

a) screw path with constant velocity and increase in accelaration

b) screw path with constant velocity and accelaration

c) screw path with increased velocity and accelaration

d) screw path with decreased velocity and increased accelaration



Answer is 'C' however if the question is x=asinwt,y=acoswt,z=ut...the answer

will be 'B'

the answer can be arrived by finding d/dx,d/dy,d/dz which are Vx,Vy,Vz thenfinding resultant using sqrt(Vx^2+Vy^2+Vz^2)

similairly again by differentiating we obtain Ax,Ay,Az components of

Acc'n...then find their resultant ..similiarly

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====================================================

86. name ,numbers to be given to evaluate instructions

a) program

b)instruction

c)data=====================================================

============================ answer

87. unit of inductance and capacitance---------------------------------------------------

-----------------------------------Henry and Farad respectively

88.why condenser used in tube light?-----------------------------------------------------

----------------------------------current discharge

89.period of geostationary satellite---(3 hrs,10 hrs,24 hrs,etc)-----------------------

-----------------------------------24



90.how many geostationary satellites to cover entire earth---(2,3,4,etc)-----------

-------------------------------------3

91.Unit of magnetic field intensity---(A/m,A/m^2,A-m,etc)--------------------------------------------------------------A/m

92.what parameters control the state of gas--(P,V,T,all)-----------------------------

-------------------------------------all

93.Body absorbing all radiations----------------------------------------------------------

--------------------------------PERFECTLY BLACK BODY.

94.Black Body---------------------------------------------------------------------------------

-----------------------------ABSORBS/transmits all radns.

95.Emmisivity of white body is-------------------------------------------------------------

-------------------------------HIGHER than black body.

96.Hookes law states that stress is proportional to------------------------------------

----------------------------------STRAIN.

97.if on insertion of dielectric,energy stored becomes one fifth..then dielectric

strength is---(5,1/5,25,1/25)--------5

98.A material having resistivity=2 times copper covers a copper metal sheet of

same thickness of resistance 2 ohm ,then resistance of composite sheet is---

(6,2/3,4/3,3/4)-----------------------------------------------------------------------------------

---------------------3/4



99.the prominent force in an atom is ---

(gravitational,nuclear,electrostatic,etc)----------------------------------------nuclear

100.As compared to a thermal plant,nuclear plant is---(more effecient,lesseffecient,depends upon material,etc)------more effecient

101.if multiplication of n numbers is 1,then their sum ---(n(n+1)/4,divisible by

n,1,always less than n)------------------always less than n

102.the material used in solar cells is---(germanium,silicon,etc)--------------------

----------------------------------------si

103.in primary cell---(chemical reactions are reversible,irreversible,etc)--------

------------------------------------------irreversible

104.The unit of charge is---(coulomb,ampere,etc)-------------------------------------

------------------------------------coulomb

105.Two taps A(requires 15 mins to fill a tank) and B(12 mins), time required

to fill d tank if both taps used ?--------(20/3) mins

106.IR depends on-R VALUE,dirn of current flow,none,ALL----------------------

-------------------------------------------??????

107.1st law of thermodynamics based on------------------------------------------------

-----------------------------------LAW OF CONSVN OF ENERGY.

108.Diesel Quality by-------------------------------------------------------------------------

-------------------------------CETANE NO.



109.Internal Energy Dir Prop to-VOL,pr,temp,none---------------------------------

----------------------------------------temp

110.Brayton Cycle is-CONST PR, vol,temp,other-------------------------------------

---------------------------------------Const pressure

111.For Const Vol cycle work done is----------------------------------------------------

-----------------------------------0.(work=P*change in volume)

112..the first sub-shell has the capacity of how many electrons---(2,4,1,8)--------

---------------------------------------2

113..to prevent short circuit of surface waves, the polarization used is---

(vertcal,horizontal,circular,etc)--------------circular

114..when ray of light enters a medium of higher refractive index,velocity---

(increases,decreases,remains same,etc)----slower

115.iron cores in transformers are laminated to prevent---(eddy

current,copper loss,etc)------------------------------eddy loss

116.Wein bridge is used to measure---

(resistance,frequency,capacitance,inductance)----------------------------------

capacitance

117.which circuit is current transeint,,,,L,C,R------------------------------------------

--------------------------------------L



118.what happens above curie temperature..(sometin related to

dia,para,ferromagnetism)-----------------------------magnetism is lost--

material becomes paramagnetic

119.why radioactivity of elements---------------------------------------------------------

----------------------------------nuclear fission

120.principle of hydrogen bomb-----------------------------------------------------------

----------------------------------nuclear fusion

121..aluminum is used to make engine and pistons cos---(light,shock resistant)--------------------------------------------light

122.tolerance of gold band in resistor---(2%,5%,10%,20%)------------------------

----------------------------------------5

123.if diameter of two pipes in ratio 2:1 and velocity 1:2,then volume per unit

second---(1:8,8:1,2:1etc)-----------------2:1

124.Magnetic tapes can be used for--- (input,secondary-storage,all) --------------

----------------------------------------all

125.COMPONENT j IF COUNTERCLOKWISE THAN WAT IS ITS

ANGLE?--------------------------------------------------------- 90 degrees

126.KIRCHOFFS LAWS APPLICABLE TO WHICH ? A.C OR D.C ?---------

---------------------------------------------------------both



127.S.P,D,F FORMAT OF BERILLIYIUM N COBALT?--------------------------

----------------------------------------------------berillium--1s2 2s2

cobalt----[Ar] 4s2 3d7

128.HEAT IS MEASURED IS WAT ?---------------------------------------------------

-------------------------------------------calories

129.eddy currents can be minimized how ?---------------------------------------------

-------------------------------------core lamination

130.poles of magnet can be measured by which rule ?--------------------------------

--------------------------------------right hand rule

131.OCTANE % OF INDIAN PETROL ?----------------------------------------------

---------------------------------------------90-95 (91 generally)

132.In RLC ckt,during resonance, impedance is-MIN,max,0,other.---------------

-------------------------------------------minimum (purely resistiv

133.Momentum unit same as---------------------------------------------------------------

-----------------------------------IMPULSE (Ns)

144.PE is highest at WHEN OBJECT thrown IS AT---------------------------------

-------------------------------------------Max height

145.Curve y=sinx at x=0 and x=pi/4 is ---------------------------------------------------

----------------------------------0 and 1/(sqrt(2))



146.Kirchoffs Law for current is rel to-ELECTRIC CKT,junction,closed

loops,electronic ckt--------------------------------junction

147.Weight of a person is max at--------------------------------------------------------------------------------------------Surface of earth

148.what is motor called when its stator rotates at same speed as its actuator--

------------------------------------------syncronized motor



here is the answer key for GENERAL ENGINEERING

1B 2A 3B 4A 5A 6B 7A 8B 9C 10B

11B 12A 13A 14B 15C 16D 17A 18D 19A 20C

21A 22B 23D 24B 25C 26C 27B 28D 29D 30A

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<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<END OF

SECTION 2>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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SECTION-3

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<EKT-

COMPUTERS and

IT>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

==========================================================

====================================================

2.how many bits in a nibble? ---(2,4,8,10)------------------------------------------------

-------------------------------4

13.DRAM consists of---(FET,MOSFET,BJT,etc)--------------------------------------

----------------------------------------MOSFET

16)Permanent Memory-RAM,Dram,Rom,other---------------------------------------

---------------------------------------Rom (it is actually EEPROM)

15.the set of circuits the store data is---(bits,circuit,registers)-----------------------

-----------------------------------registers

16.Which of these is a open source software---(MS-windows,Mac-os,red hat

linux,WIN ZIP)---------------------------WINZIP



3]micro-computer has a²²±--------------------------------------------------------------

--------------------------------- CPU

which is sequential access device?

magnetic tape

magnetic drive

all of the

above======================================================

=====================answer

what does structural lang do?

reduces the structure of prog.

can be read by only programmer.

all of the

above===========================================================================???

set of instructions-----------------------------------------------------------------------------

---------------------------------program

BCD is used to convert

binary



decimal====================================================

=============================answer

Ascii

recursion is used

in=========================================================

===============???

stack

queue

link list

all of the above

which is offline

device=====================================================

=================???

connected to cpu

not connected to cpu

direct storage

all of the above.

half adder is used

ans 3,carry



in a simple binary tree node is defined as

n

n-1

n-2

n/2

if nibble is transferred at rate 128 then

32

64========================================================

=============================answer

256

240

what does fan out means--------------------------------------------------------------------------------------------------------Number of components that an

IC can drive at its output

BCD is:

encoder====================================================

==============================answer

decoder

multiplexer

demultiplexer



one input many output

encoder

decoder

multiplexer

demultiplexer================================================

=============================answer

nand and nor gate is result of how many gates?

which is not a correct equation of boolean alzabra:

A+0=A

A+A=A

A+1=1

X=+1======================================================

==============================answer

lowest power dissipitation

CMOS====================================================================================answer

TTL

MOSFET

ECL



first generation computer used

valves======================================================

=============================answer

Transistor

ICs

SSI

low pass filter is

Integrator==================================================

==============================answer

differentiator

Comparator

microprocessor and microcomputer providing access to many use----------------

------------------------------------------- multi-user system

Which configuration has min distortion

class

a=========================================================

==========================answer

class b

class c



class d

which memory need to be refreshed everytime

dynamic

ram=======================================================

========================answer

static ram

prom

rom

cpu consists of

Arithmetic and logical

unit=======================================================

==============answer

timing and control unit

all of the above

where data is stored in cpu.

Register====================================================

==============================answerflip flop



one question was like some thing to transfer through bus then which will be

used:

DMA======================================================

===============================answer

Interrupt vector

one circuit was given

and option were

differentiator-----------------------------------------------------------------------------------

-----------------------------------high pass filter

Integrator---------------------------------------------------------------------------------------

----------------------------------low pass filter

What doesn¶t assembler do

Store the code

Convert into machine code

Some option------------------------------------------------------------------------------------

--------------------------(dis option HAS to be the answer)

All of the above

Moving of data from main memory to secondary memory

Swapping===================================================

===============================answer

Spooling



Exchange

Some option

One question based on storage with option

CCDs======================================================

===============================answer

Disk

Tape

When the flip flop is high------SET--------When low -----------------------------------------------------------------------------reset

2) A BYTE= BITS ?--------------------------------------------------------------------------

----------------------------------8

9)Octal repn for 11111010-81,372,78,other----------------------------------------------

----------------------------------372

2)Which is d 1st Computer-----------------------------------------------------------------

---------------------------------UNIVAC

3)CPU consists of-----------------------------------------------------------------------------

-------------------------------ALU & CONTROL UNIT

4)For registering instructions in computer----------------------------------------------

-----------------------------------INDEX REGISTER



5)Which is d 1st generation computers-MAGNETIC TAPE,vaccuum

tubes,minicomputers,all.-----------------------------vaccum tubes

6)Which is for code of instructions------------------------------------------------------------------------------------------ASCII



here is the answer key for specialist.....COMPUTERS

1C 2C 3D 4C 5B 6A 7B 8A 9D 10C

11C 12A 13B 14 15D 16D 17 18A 19D 20C

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SECTION 3>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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SECTION-4

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<EKT-MECHANICAL,AERONAUTICAL>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

>>>>>>>>>>>>>>>

==========================================================

====================================================

1) zeroth law of thermodynamics----------------------------------------------------------

--------------------------------------thermal equilibrium of bodies

2) manganese in steel makes it: ductile, malleable, harder---------------------------

-----------------------------------------harder

3) efficiency of jet at altitude :increases, decreases,-----------------------------------

---------------------------------------increases

4) volume of surface shrinks cos of: adhesion, cohesion------------------------------

----------------------------------------surface tension

6) weld spatter means------------------------------------------------------------------------

---------------------------------- defect

7) result of arc welding : composition of filler in electrode, inert gas liberation-

--------------------------------------------???

8) volatility of petrol is at temp : higher than diesel, lower than diesel------------

------------------------------------------lower than diesel



9) a perfect fluid is : compressible, viscous, all of the above-------------------------

----------------------------------------incompressible

10) sum prob related to apot welding-----------------------------------------------------

-------------------------------------????

11)father of industrial engg?---------------------------------------------------------------

------------------------------------Fredrick Winslow Taylor

12) grant chart relates to?-------------------------------------------------------------------

----------------------------------???

13) continuous chips helps in : gud surface finish, easily disposable---------------

-----------------------------------------gud surface finish

14) 2 parallel shafts to be connected in perpendicular by: bevel, spiral , helical

or worm gears---------------------------helical gear

15) a question on gear cutting--------------------------------------------------------------

-----------------------------------???

1)mercury does not wet glass, which fluid prop-

COHESION,adhesion,ST,Visco------------------------------------------Surface

tension (ST)

2)fluid has specific-SHAPE,vol,temp,pr.-------------------------------------------------

----------------------------------Shape



3) petrols quality by--------------------------------------------------------------------------

-----------------------------OCTANE NO

4)Thermal eff of 4str compared to 2 stroke is -----------------------------------------------------------------------greater (but lesser power than 2 stroke)

5) Durng suction stroke of diesel engine-------------------------------------------------

---------------------------------FUEL AIR MIXTURE.

6) Fine mixture of fuel air in petrol engine is called-----------------------------------

-----------------------------------CARBURRETION.

7)TIG welding requires----------------------------------------------------------------------

-------------------------------ARGON N HELIUM.

8)Ideal Fluids follow--------------------------------------------------------------------------

------------------------------PASCALS LAW.

9Process havn ini n final states same-----------------------------------------------------

---------------------------------CYCLE.

10)Cyclic Process havn ini n final states same------------------------------------------

-----------------------------------ZEROTH LAW.

11)DC series motor used in-SHAPERS,lathe,cranes,other---------------------------

---------------------------------------cranes

12)Open cycle behavior over closed cylce------------------------------------------------

----------------------open cycle MORE STABLE BUT LESS ACCURATE.



13)Not a vector quantity- MI,force,accln,velo------------------------------------------

------------------------------------MI (moment of inertia)

14) raindrops have spherical shape coz of-ST,visco.----------------------------------

------------------------------------surface tension

15)Steffan-Boltzman law--------------------------------------------------------------------

--------------------------------ABS TEMP RAISE 2 FOUR.

16)KIRCHOFFS LAW OF HEAT TRANSFER---------------------------------------

--------------------------------------------- RATIO.

17)3 PHASE POWER SUPPLY,phases separated by---------------------------------

-----------------------------------------120 DEGREES.

18)Violating laws of thermo----------------------------------------------------------------

---------------------------------PMM.

19)CPM has-One time «.-------------------------------------------------------------------

---------------------------------????

20) Not advtg of Motion study-------------------------------------------------------------

--------------------------------- Reducing Inventory costs.

21)Best weldable-.15%CS,.25%CS,// .5%CS,.75%CS--------------------------------

-------------------------------------????



22) Drawn into wires-------------------------------------------------------------------------

-------------------------------Ductility.

23)Carburising over Oxidising flame-Carbu-LESS,more effective---------------------------------------------------------More

24)Not renewable-NUCLEAR,solar,biomass,wind.-----------------------------------

---------------------------------------nuclear

25)Dew pt of moist air-----------------------------------------------------------------------

-------------------------------vapor condensation temperature

26) Density of water highest at-0C,100C,//0K,200C.----------------------------------

-----------------------------------actually 4 degrees centigrade (277K)

27) Electrolyte-DISTILLED WATER,salt soln----------------------------------------

---------------------------------------salt solution

28)PV=mRT applicable for-adiabatic,isothermal changes,BOTH,other----------

------------------------------------------both

29)All modes of HT in-BOILER-----------------------------------------------------------

-----------------------------------,elec heater,steam cond.

30)Not a boiler classfn type-----------------------------------------------------------------

-------------------------------Acc TO QUALITY OF WATER.

7.whats the measure of quality of petrol---(octane no,cetane no,etc)---------------

------------------------------------octane



8.self ignition diesel engine as compared to petrol has?----(lower ignition

temp,higher ignition temp,etc)------------lower

9.the efficiency of compressor at high altitude---

(increases,decreases,same,etc)--------------------------------------decreases

12.(not so sure) the velocity ratio of 8 teeth wheel and 100 teeth wheel in third

gear wheel is(1:12.5,1:800,etc)-----1:12.5

31)Cam provides-OSCILLATING/ rotating/reci/other motion---------------------

---------------------------------------?????

32) Brazing ------------------------------------------------------------------------------------

----------------------------HARD SOLDERING OF BRASS.

29)Acetylene filled in Cyl is in-LIQ/gas/solid/other state.----------------------------

----------------------------------Liquid (high pressurized)

17.if petrol is used in deisel engine-----(knocking increases,effeciency

decreases,black smoke,will not work)-------knocking inc

25)In 4 stroke engine power str occurs for every---------------------------------------

--------------------------------- 2 REVLN OF CRANKSHAFT.

32.in 4-stroke engine,the cycle completes after how many revolutions of crank

shaft---(2,4,1+1/2,2+1/2)------------2



4]carnot-cycle±its effeciency and working basics--------------------------------------

-----------------------------------(refer above)

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SECTION 4>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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==========================================================

====================================================

SECTION-5

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<EKT-

ELECTRICAL,ELECTRONICS,INSTRUMENTATION>>>>>>>>>>>>>>>

>>>>>>>>>>>>>>>>>>>>>>>>>>>

==========================================================

====================================================

1)what is the use of dummy coils in induction motor?--------------------------------

----------------------------------------???

2)value of inductance depends on??------------------------------------------------------

-------------------------------------switching frequency

3)number of devices connected together to store digital data is?-------------------

-----------------------------------------register

a)circuit b)register c)varacter d)bits

4)the flow and timing of data to and from the micro processor is done by-------

--------------------------------------------control pin

a)control pin b)data pin c)address pin d)....

5)given transfer function 2/(s+2) and w=10 find gain---------------------------------

---------------------------------------0.196



a).44 b).33 c).196 d)...

6)induction instruments are widely used in---------------------------------------------

--------------------------------------???

a)voltmeter b)ammeter c)wattmeter d)frequency meter

8)kWh meter is--------------------------------------------------------------------------------

---------------------------------recording type

a)recording type b)indicating type c)deflecting type d)..

9)synchronous motor is----------------------------------------------------------------------

----------------------------------induction type

a)induction type b)cylindrical pole type c)salient pole type d)..

10)for dc shunt motor when polarities are reversed-----------------------------------

---------------------------------------reverses direction

a)it stops b)reverses direction c)it burns d)...

11) high pass filter acts as-------------------------------------------------------------------

----------------------------------differentiator

a)integrator b)differentiator c)both d)none

12) when storage battery turns weak it is restored by------------------------------------------------------------------------distilled water

a)a dose of H2SO4 b)battery restorer c)distilled water d)none



13)when the battery of multimeter turns weak it shows------------------------------

----------------------------------------accurate reading

a)accurate reading b)lower reading c)more reading d)no reading

14) direction of induced emf in ind motor is given by---------------------------------

---------------------------------------right hand rule

a)flemmings L.H.R b) right hand rule c)thumb rule d)..

15)for balanced 3 ph Vyb lags Er by

a)120degree b)30degree c)60degree d)90degree

16)the B.W for transmission of n signals with freq Fm is----------------------------

-----------------------------------------2nFm

a)2Fm b)2nFm c)...d)...

17)schmitt trigger is--------------------------------------------------------------------------

---------------------------------squaring circuit

a)squaring ckt b).....c)...d)...

18)capacitor is---------------------------------------------------------------------------------

--------------------------------conductor filled with dielectric

a)insulator filled with dielectric b)conductor filled with dielectric c)...d)...





here is the answer key for specialist .....ELECTRICAL,ELECTRONICS AND

INSTRUMENTATION

1C 2A 3A 4B 5D 6 7 8B 9 10D

11B 12C 13C 14D 15B 16C 17C 18D 19D 20A

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<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<END OF

SECTION 5>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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====================================================SECTION-6

<<<<<<<<<<<<<<<<<<<<<<<<<<FAST TRACK SELECTION-

GENERAL+EC

combined>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>



==========================================================

====================================================

1.catalyst iz used for---------------------------------------------------------------------------------------------------------alters rate of reaction

(slow down the reaction rate, change in product part, inc the rate of

reation««««)

2.electron spin is given by-------------------------------------------------------------------

--------------------------------bohr

( plank, bohr««««««)

3.max value of sin@+cos@------------------------------------------------------------------

---------------------------------45 degrees

(at @= 30 deg., 45, 60, 90««««.)

4.something related to prism ref index were given one angle is given and other

angle has to find----------------------n=sin[(A+D)/2]/sin(A/2)

n=refractive index

A=refracting angle

D=Deviation angle

5.latch is same as -----------------------------------------------------------------------------

-------------------------------D-F/F

( RS F/F, JK F/F, d F/F «««««.)



6.principle of hydrogen bomb--------------------------------------------------------------

---------------------------------uncontrolled nuclear fussion

( uncontrolled nuclear fission, controlled nuclear fission uncontrolled nuclesr

fussion, uncontrolled nuclesr fussion««.)

7.ques related to radioactive half life time-----------------------------------------------

----------------------------------T=0.693/lambda

T=half life time

lambda=decay constant

8.property of radioactivity------------------------------------------------------------------

---------------------------------gamma rays

(atomic nuclei, gamma rays, UV rays«««««.)

9.carbon in million form becoz-------------------------------------------------------------

----------------------------------catenation

(it is tetravalent, isomers, catenation««««..)

10.isotopes r------------------------------------------------------------------------------------

------------------------------same atomic no

( hav same atomic no. ,diff nuclei, diff no of protons««««««««)

11. 2 sides of triangle r 10cm ,8cm 3rd ? when d sides r in AP----------------------

---------------------------------------either 6cm or 12cm

( 8cm,11cm«««)



12. 2882 arrangenet of electrons in an atom hav not true from options-----------

----------------------------------------belongs to group 2

( dis atom belongs to group 2 ,««««««««..)

13. in potassium-------------------------------------------------------------------------------

------------------------------4s>3d

( 4s>3p,4s>3d,4s<3p««««.)

14.hydrometer is used for measuring-----------------------------------------------------

---------------------------------specific gravity of solutions

(water volume.water pressure«««)

15.track ball is operated by-----------------------------------------------------------------

-------------------------------finger

(finger, foot sound, plam««««« )

16 .in geostationary satellite max coverage angle------------------------------------------------------------------------76

( 76,60,90,70««««)

17. min velocity required in satellite to enter into in space---------------------------

------------------------------------11.2km/s (escape velocity)

( 8km/s,8km/hr«««)

18. plane in air when turned in left wats happens to the nose and tail-------------

---------------------------------------(actually tail of the airplane move

toward the left, causing the

nose

turn to the right. ...)



(nose raise and tail dowm, nose down tail raise, both remain in same

position«««.)

19. super conductor is-------------------------------------------------------------------------------------------------------dia-magnetic

( ferro mag. ,ferri mag., para mag., dia mag., anti mag««««..)

20. 3 vectors r given as z, z+iz,iz now in z axis------------------------------------------

----------------------------------???

( a circle having 10 radius, ellipse, eccentric«««..)

21. probability of occurance of A and B is ½ probability of not occurance of A

and B is 1/ 6 wat is the probability of A--P(A)P(B)+P(A)P(B')

(1/4«««««««)

22. non-atomic resistance is-----------------------------------------------------------------

------------------------------capacitor

( resistor, capasitor, diode«««««.)

23. transistor most commonly biasing----------------------------------------------------

---------------------------------voltage divider

(emitter feedback, collector feed back, voltage divider, base bias«««««.)

24. a transmitting signal havinf freq range 10.0mhz-10.1mhz hav sampling

freq---------------------------------------200KHz

( 200khz, 100khz, .3mhz, .4 mhz«««««)



25. in navy mari time communication is in----------------------------------------------

----------------------------------VLF

( VHF,VLF,LF,SHF«««..)

26. FSK is used in ----------------------------------------------------------------------------

------------------------------telegraphy

( telegraphy,telephony,radiotransmission«««.)

27. video signal is in--------------------------------------------------------------------------

-----------------------------AM

( FM, AM, PCM«««««.)

28. something related to cover on TV screen as base cover used 4-----------------

------------------------------------degaussing

( degaussing, reduction of UV rays, proper color, spotin of electron beam on

screen«««)

29. colour in tv is due to---------------------------------------------------------------------

------------------------------chrominance

( chrominance,luminous, color burst««««..)

30. TWT is used in magnetron why-------------------------------------------------------

---------------------------------???

( gives high freq«««)

31. which one is digital signal---------------------------------------------------------------

------------------------------PCM

( PSK, FM, AM,PCM«««..)



32. open loop sys compared to closed loop sys------------------------------------------

--------------------------------unstable

( in stable less error,unstable ««)

33. efficiency of OPamp---------------------------------------------------------------------

------------------------------???(question not clear)

(1000000,10000,100,«««««)

34. which one iz active filter----------------------------------------------------------------

------------------------------RC

( RC, butterworth, notch«««««)

35. what happens in ±ve feed back--------------------------------------------------------

-------------------------------gain decrease,BW increases

circuit operation more stable

change in i/p and o/p impedances

36. which covers max area------------------------------------------------------------------

-----------------------------circle wuth radius 4

( circle with radius 4,triangle with sides 3,4,4 , triangle with sides 3,4,5)

37. monochromatic beam in----------------------------------------------------------------

------------------------------laser

( laser««««..)



38. RADAR is used for-----------------------------------------------------------------------

------------------------------all

(defence survillence, detection of object, finds the vel of obj..)

39. component not in automatic control sys---------------------------------------------

--------------------------------oscillator

(sensor,ascillator, error detector device..)

40. why v use tungsten wire in bulb-------------------------------------------------------

------------------------------high resistance

( high resistance, high conductor, low resistance«)

41. when power of transmitting signal is increased wat happens to its range?--

--------------------------------------increases (RADAR range equation)

42. microstrip is used in ?-------------------------------------------------------------------

----------------------------planar microwave sensors built with

PCB

technology

43. question related to dipole?-------------------------------------------------------------

-----------------------------???

44. electron mobility in -------------------------------------------------------------------------------------------------m(squared) per (volt-second)

(mm,cm,angstrom«««.)



45.in a molecule when oen atom is surrounded by four atom at corners the

structure is----------------------------tetravalent

(tetravalent, octavalent, ««««.)

46. which is freq controlled system -------------------------------------------------------

-----------------------------PLL

(PLL,VCO«««««..)

47. roots of an eq are twice of eq 3x^2+3x-3=0 the other eq is----------------------

--------------------------------x^2+2x-4=0

48. addition of two vectors P and Q-------------------------------------------------------

-----------------------------sqrt(P^2+Q^2+2PQcos@)

( p^2+q^2+2pqcos@..................)

49. mostly used transmission code---------------------------------------------------------

---------------------------ascii-7

(ascii-7,ascii-8,edbic«««««)

50.when dc supply is removed to clipper then it is-------------------------------------

-------------------------------rectifier

(clampper,rectifier,demodulator,chopper«..)

51.something like in in length in solenoid something dec wat happens to 3rd

value?-------------------------------???

52. A tap fills bucket in 15min B tap in 13 mins if both tap are open for 1 min

starting with b tap in hoe much time the bucket fills



(14 ½,13 ½ , 14 ¾«««««)

53. question related to poly hedral--------------------------------------------------------

----------------------------???

54. evaporation in atm compared with water evaporation in vaccum-------------

-----------------------------------decreases

(inc,dec, remain same«..)

55. P no of persons promise to give Q$ but R persons did not give the S$ each

in charity wat is the eq for charity given

( don¶t remember the proper language)

56.red light wawlength can b detected by------------------------------------------------

----------------------------emmision spectrometer

( lumicent light, some instruments sort were given««««..)

1) The triangle z, z+iz and iz of area or the side is 50 then in which plane it

lies-----------------------------------circle

1)circle 2)ellipse

2) If the area is increased by 69% then how much the side of the square will

increase----------------------------30 % (new area=1.69*side^2





1)Physical balance will be in equilibrium

2)It will move according to weight of the pan

10) One problem in sequence number----------------------------------------------------

----------------------------???

11) In Geometric Progression all are +ve nos, first consecutive two nos are

same then common ratio will be----1

12) TWT question-----------------------------------------------------------------------------

-------------------------???

13) Most commonly used metal in solar cells-------------------------------------------

------------------------------Si

14) Current conducting non metal--------------------------------------------------------

-----------------------------graphite

15) Which of the following doesn't give flame test-------------------------------------

-------------------------------zinc

16) In audio amplifier reason for using R-C coupled---------------------------------

---------------------------------removes DC component

1)Input and output will be same frequency

17) Advantage of closed loop system over open loop system-------------------------

-------------------------------more stable and more accurate

1)Less stable and less accurate



2)more stable and less accurate

3)less stable and more accurate

18) Sound waves travel in air as-----------------------------------------------------------

----------------------------longitudinal

1)Longitudinal 2)Traverse 3)Latitudinal

19) In star network which of the following are true-----------------------------------

--------------------------------Line current=phase current

line

voltage=1.732*phase voltage

1)formula reg line voltage 2)Line current formula

20) Tank circuit is----------------------------------------------------------------------------

--------------------------parallel LC circuit is tank circuit

1)Series circuit 2)Parallel Circuit

21) If the frequency is beyond resonant frequency then the impedance is--------

----------------------------------purely inductance

1)Purely capacitance 2)purely inductance

22) In physics from lenz law or faraday' law-------------------------------------------

-------------------------------no of turns

1)no of turns 2)No of turns and distance between adjacent turns

23) The time period of the pendulum depends on--------------------------------------

-------------------------------length (as well as gravity)



24) Weight of the bob------------------------------------------------------------------------

---------------------------???

3)dia of the bob

25) At 0 K semiconductor becomes-------------------------------------------------------

------------------------------insulator

1)dielectric 2)insulator

26) Water is flowing in a pipe of dia given and spped also given when it is

attached with another pipe of diameter given then what is the speed of the

water in second pipe

----------------------------------------------------------------------------------------------------

----------------------A1*V1=A2*V2

A=cross-section area of respective pipe

V=water speed at respective pipe

27) Cal of linear strain if weight is given and length it elongates also given------

-----------------------------------Y=stress/strain=(Wt/A)/(l/L)

28) Angle of inclination of inclined manoeter-------------------------------------------

-------------------------------50-75 degrees

29) Indirect way of generating FM--------------------------------------------------------

-----------------------------Armstrong modulation

1)Varactor diode modulation 2)Reactance FET 3)Armstrong

modulation



30) If S=1 R=1 then Q value of SR FF would be---------------------------------------

---------------------------------Forbidden

1)Set 2)Reset 3)Forbidden

31) Most ionic compound-------------------------------------------------------------------

----------------------------LiF

1)LiC 2)LiF 3)LiBr

32) In which compound will the sulphur will have more than one oxidation

state-----------------------------------H2S2O7

33) Alkali metals are characterzed by----------------------------------------------------

----------------------------ionization

1)Solvency 2)Ionization

34) In the universe Carbon is in many compounds for the reason---------------------------------------------------catenation

1)Tetravalency 2)Isomerism

35) A polynomial given when divided by another polynomial given---------------

----------------------------------remainder 0--Denominator is factor

non-

zero--not a factor

36) Probablity of occurence of A is given neither A nor B also given and stated

A and B are independent events.



Probability of occurence of B will be-----------------------------------------------------

----------------------------???

1)1/4 2)35482

37) Life cycle (Charge and discharge ) of Lead acid battery------------------------

---------------------------------1200 cycles

1)1200 cycles 2)1000 cycles

38) logxto the base 8 +logxto the base 4+logxto the base 4=11 then value of x---

--------------------------------64

1)8 2)64

39) In H2O2 oxygen is lost by oxidation or reduction then which bond of

oxygen with hydrogen is lost-----------covalent

1)Covalent 2)Electro valent

40) Max value of sinA + cosAfor the value of A-----------------------------------------------------------------------45

1)30 degrees 2)45 degrees

41) Alkali metals occurs in cholorophyll-------------------------------------------------

-----------------------------Ca (but even Mg is present but very low

in composition)

1)Ba 2)Ca 3)Mg

42) Regarding series motor starting------------------------------------------------------

----------------------------???



==========================================================

====================================================

43) In trajectile related question Range is given 100 m Initial velocity is 800m/sec. find height of the object

-----R=u(squared)*sin2@/g --------------------->find the value of @ i.e angle of

elevation and then use it in the following formulae

H=u(squared)*sin@(squared)/2g

the values in the question are improper..however the concept of solution is as

discussed above

==========================================================

====================================================

44) Ball drops from height of 200 metres bounds back of 2/3 of its height

when it comes to rest what will be total distance travvelled-------------------------

----------------------------------------1000 meters

45) No magnetic moment in-----------------------------------------------------------------

----------------------------------Non-ferromagnetic

(actually dia-magnetic)

1)Ferro magnetic substances 2)Non ferro magnetic



46) Same input given to NAND gate then the operation is said to be--------------

-------------------------------------------NOT

1)NAND 2)NOT

47) Susceptability unit-----------------------------------------------------------------------

----------------------------------unitless

1)Wb-Am 2)WbAm-2

48) Why/What for strapping in magnetron---------------------------------------------

---------------------------------------to prevent mode jumping

49) Maximum attenuation for wave propagation is-----------------------------------

-----------------------------------------dielectric

1)dielectric 2)conductor

50) In radio what beam is used by directional finder---------------------------------

----------------------------------------pencil beam

1)Omni directional 2)Pencil beam

51) Peroxide effect----------------------------------------------------------------------------

---------------------------------Free radical moment

52) At 25 degrees celcius Silicon barrier potentialis-----------------------------------

--------------------------------------0.7 volts (1.12 eV)

1)0.35 eV 2)0.3 eV



53) Two sine wave modulated by carrier wave of index 0.3 and 0.7 the

combined index would be-------------------------0.76 to be precise

1)1 2)0.5 3)0.7

54) In opamp cross line detector will perform -----------------------------------------

--------------------------------------sine to square

1)sine to sine 2)sine to square 3)square to sine

55) Compound is used in or purpose-----------------------------------------------------

-------------------------------------???

==========================================================

====================================================

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<END

OF SECTION 6>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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