(DEC 411) - anucde.info · (d) Explain cylindrical Magnetron. UNIT II 3. (a) Draw and explain of H-plane Tee. (b) Draw equivalent circuit of Magic Tee and explain in detail

(DEC 411)

B.Tech. DEGREE EXAMINATION, MAY 2012.

(Examination at the end of Final year)

Electronics and Communication Engineering

INDUSTRIAL MANAGEMENT

Time : Three hours Maximum : 75 marks

Question No. 1 is compulsory and answer any FOUR from the remaining.

All questions carry equal marks.

1. Write short notes : (5 × 3 = 15)

(a) Sole proprietorship.

(b) Types of depreciation.

(c) OC curue.

(d) Leadership.

(e) EPQ.

2. Describe the functions of management.

3. Explain the merits and demerits of private limited and public limited companies.

4. Describe the different methods of depreciation.

5. What is production management? And explain different types of production systems.

6. Explain the importance of inspection and quality control and also describe the X, P and

R control charts.

7. Describe the importance of inventory management and also explain the ABC selective

control techniques.

8. Describe the importance of leadership and motivation aspects in the industrial

organisation.

9. Explain the importance of marketing management and also explain the concepts of

product life cycle and channels of distribution.

——————

(DEC 412)


(Examination at the end of Final Year)


Paper II — SATELLITE COMMUNICATION


Answer Question No. 1 compulsorily. (15)

Answer ONE question from each Unit. (4 × 15 = 60)

1. (a) Write the types of orbits. (2)

(b) Explain Space Craft antennas. (2)

(c) Define G/T ration of an earth station. (2)

(d) Explain probability of error. (2)

(e) Define keplers laws of planetary motion. (2)

(f) Explain fast frequency hopping. (3)

(g) What is API? (2)

UNIT I

2. (a) Explain orbital effects in communication system performance.

(b) Write a brief history of Satellite Communication.

Or

(c) Explain the location of satellite with respect of the earth.

(d) Explain orbital perturbations and launch and Laurels vehicles in satellite

communication system.

UNIT II

3. (a) Explain FDMA.

(b) Explain power systems and communication sub-systems in space craft.

Or

(c) Explain CDMA.

(d) Explain SPADE DAMA satellite systems.

UNIT III

4. (a) Explain system noise temperature and G/T ratio.

(b) Explain design of satellite links for specified C/N ratio.

Or

(c) Explain Satellite Broad Casting and satellite TV systems.

(d) Explain small earth station antennas.

UNIT IV

5. (a) Explain DSSS with CBPSK.

(b) Write practical Jammer types and explain any one type of Jammer.

Or

(c) Write short notes on:-

(i) Acquisition and tracking

(ii) PN sequences

(iii) Slow frequency hopping.

———————–––

(DEC 413)




Paper III — MICROWAVE ENGINEERING




1. (a) Explain Attenualors. (2)

(b) Explain resonators. (2)

(c) Define crystal detectors. (2)

(d) Explain Isolator. (2)

(e) Explain circulators. (2)

(f) Define ‘gun effect’. (3)

(g) What are the advantages of microwaves? (2)

UNIT I

2. (a) Draw and explain of Reflex Klystraw auphfiri.

(b) Explain velocity modulation and Klystron auphfiri.

Or

(c) Explain TWT (traveling wave tubes) in detail.

(d) Explain cylindrical Magnetron.

UNIT II

3. (a) Draw and explain of H-plane Tee.

(b) Draw equivalent circuit of Magic Tee and explain in detail.

Or

(c) Draw and explain of directional coupler and calculate coupling factor and

directivity.

(d) Explain rectangular and cylindrical cavity resonators.

UNIT III

4. (a) Draw and explain of PIN diode and write the applications of GUNN diode.

(b) Write the differences between IMPATT and TRAPATT diode.

Or

(c) Explain crystal detectors.

(d) Explain varactor diode and write the applications of read diode.

UNIT IV

5. (a) Explain the measurement of impedance using microwave bench-set up.

(b) Explain measurement of VSWR in any method.

Or

(c) Explain the detection of microwaves.

(d) Measurement of scattering co-efficient. Explain.

———————–––

(DEC 414)




Paper IV – ANTENNAS AND PROPAGATION


Answer Question No. 1 compulsorily. (1 × 15 = 15)


1. Write brief notes on :

(a) Applications of short antennas. (2)

(b) Half power beam width (2)

(c) Uniform linear array (2)

(d) Binomial array (2)

(e) Applications of log periodic antenna (2)

(f) What is Duct propagation (2)

(g) Explain Folded dipole. (3)

UNIT I

2. (a) Explain and derive radiation from Quarter wave monopole.

(b) Explain basic principle of small circular loop antennas.

Or

(c) Explain Traveling wave antennas.

(d) Explain and derive power radiated by current element.

UNIT II

3. (a) Explain Directive gain and power gain.

(b) Explain Antenna polarisation and radiation efficiency.

Or

(c) Explain side lobe level and beam width of broad side away.

(d) Write principle of multiplication of patterns.

UNIT III

4. (a) Draw and explain of Horn antenna.

(b) Explain Helical antenna with neat diagram.

Or

(c) Explain parabolic reflecta antennas with neat diagrams.

(d) Explain in detail microstrip antennas.

UNIT IV

5. (a) Explain Ground wave propagation.

(b) Explain Atmospheric effects in space wave propagation.

Or

(c) Write short notes on :

(i) Tropospheric scattering

(ii) Critical frequency

(iii) MUF.

——————

(DEC 415)




Paper V — VLSI DESIGN




1. (a) What is BiCMOS advantage over CMOS?

(b) Mention two scaling factors for device parameters.

(c) Define sheet resistance.

(d) Define transconductance.

(e) Give the expression for figure of merit.

(f) Write briefly about microelectronics.

(g) State Moore’s law.

(h) What is meant by simulation?

(i) What is fringing field capacitance?

(j) Draw stick diagram of CMOS inverter.

(k) Define types and constants.

(l) What is inverter delay?

(m) Draw 2 i/p CMOS NAND gate.

(n) What are the types of semicustom ASIC’s?

(o) Define latch up.

UNIT I

2. (a) Compare the following :

(i) AMOS and PMOS.

(ii) CMOS and BiCMOS.

(b) Give the relationship between Ids (Vs) Vds.

Or

3. (a) Explain in detail about BiCMOS inverters and specify the disadvantages.

(b) Explain the steps involved in N-MOS fabrication with neat sketches.

UNIT II

4. (a) Write down the scaling factors for device parameters.

(b) Explain the delay unit and derive the expression for the delay through an inverter.

Or

5. (a) Explain Wiring Capacitance.

(b) Explain design rules and layout.

UNIT III

6. (a) Explain switch logic circuit with the help of neat sketch.

(b) Explain about the design of an ALU subsystem.

Or

7. (a) Describe the structural design with examples.

(b) Explain in detail the architectural issues.

UNIT IV

8. (a) Write a short note on :

(i) Libraries and Packages.

(ii) Functions and procedures.

(b) Explain the details of programmable logic devices.

Or

9. Explain the structural, behavioural and data flow design elements briefly. Generate a

VHDL code for a full adder in behavioural, structural and dataflow model.

———————–––

(DEC 416 A)

B.Tech DEGREE EXAMINATION, APRIL/MAY 2012.



Paper VI — COMPUTER NETWORKS




1. (a) Why are protocols needed?

(b) Difference between passive and active hub.

(c) What is meant by congestion?

(d) What is a digital signature?

(e) What is cipher text?

(f) What is the difference between internet and intranet?

(g) List out the layers of TCP/IP protocol.

(h) What is IEEE 802.3 ?

(i) Define packet.

(j) What is routing?

(k) Define compression.

(l) What is subnet?

(m) What is datagram?

(n) What is Gateway?

(o) What is MIME?

UNIT I

2. (a) Explain different network topologies.

(b) Explain about the error detection and correction.

Or

3. (a) Explain about coaxial cable and broadband coaxial cable.

(b) Write a short notes on trunks and multiplexing.

UNIT II

4. (a) Describe about Bluetooth Architecture and specifications.

(b) Explain clearly about wireless LAN protocols with neat sketches.

Or

5. Explain about various Routing Algorithms.

UNIT III

6. (a) Write short notes on :

(i) TCP

(ii) UDP

(iii) RTP.

(b) What do you mean by quality of service? Explain.

Or

7. (a) Explain about congestion control in networks.

(b) Explain the network layers in the internet.

UNIT IV

8. Explain different E-mail message format.

Or

9. Write short notes on :

(a) Symmetric key algorithm

(b) Public key algorithm

(c) World wide web.

———————–––

(DEC 416 B)




Paper VI — SPEECH PROCESSING




1. (a) What is linear predication? (2)

(b) List the advantages of Delta modulation. (3)

(c) Draw Block diagram of channel vocoder analyzer. (2)

(d) Define Pitch and Period of a pitch. (2)

(e) Mention different methods of speech coding techniques. (2)

(f) What do you mean by autocorrelation? (2)

(g) What are the types of filters used in speech processing? (2)

UNIT I

2. (a) Explain the concept of Anatomy and Physiology of speech production.

(b) Explain about a discrete time models based on uniform tube model.

Or

3. (a) Explain the various time domain models for speech processing

(b) What is the effect of pasal coupling?

UNIT II

4. (a) Write a short notes on Instantaneous quantization.

(b) Explain the estimation of pitch by using comb filter.

Or

5. (a) Explain about DPCM.

(b) Explain about signal estimation from the modified STFT.

UNIT III

6. (a) Explain the complex cepstrum of speech.

(b) Explain Homorphic systems for convolution.

Or

7. (a) Explain about speech analysis and synthesis structures.

(b) Explain the spectral root homomorphic filtering.

UNIT IV

8. (a) Explain the spectral features for speaker recongnition.

(b) Explain the error minimization of speech coding.

Or

9. (a) Explain briefly about Levinsion Recursion

(b) Explain any one speaker recognition Algorithm.

——————

(DEC 421)


(Examination at the End of Final Year)


Paper VII — RADAR AND NAVIGATIONAL AIDS




1. Write briefly on :

(a) Explain Doppler effect. (2)

(b) Delay line canceller. (2)

(c) Write types of tracking radar system (1)

(d) Explain Radomes. (2)

(e) Explain noise jamming. (2)

(f) Define blind speed. (2)

(g) What is clutter? (2)

(h) Write radar applications. (2)

UNIT I

2. (a) Draw block diagram of pulse radar and explain each block.

(b) Derive radar range equation.

Or

(c) What are the limitations of CW radar?

(d) Draw and explain of FMCW radar.

UNIT II

3. (a) Draw and explain the MTI radar.

(b) Explain clutter attenuation.

Or

(c) Explain mono pulse tracking radar.

(d) Explain sequential lobing.

UNIT III

4. (a) What are the types of Duplexers using in radar systems?

(b) Write the effects of noise jamming.

Or

(c) Draw and explain of super tetrodyne receiver.

(d) What are the stealth applications?

UNIT IV

5. (a) Draw and explain of ILS.

(b) Explain about DME.

Or

(c) Write short notes on :

(i) VOR

(ii) LORAN

(iii) OMEGA.

——————————

(DEC 422)




Paper – VIII : OPTICAL COMMUNICATION




1. (a) What is Total Internal Reflection?

(b) Define Acceptance angle.

(c) State Snell's law.

(d) Define skew rays.

(e) What are couplers?

(f) What is meant by ISI in optical fibers?

(g) Define modulation capability.

(h) What is meant by BER?

(i) List some photodetectors.

(j) What is Attenuation?

(k) What is principle of WDM?

(l) What is θ -Switching in LASER?

(m) What is surface dark current?

(n) Define macroscopic bending.

(o) Define Refractive index.

UNIT I

2. (a) Draw complete block diagram with various components of fiber optic

Communication system and explain each block clearly.

(b) Compare step index and Grated index optical fibers.

Or

3. (a) Write short notes on :

(i) Critical Angle

(ii) Modes in optical fiber

(iii) Numerical aperture.

(b) Mention the advantages of fiber optics.

UNIT II

4. (a) Explain inter model and intra model dispersion.

(b) Discuss scattering and bending losses in fibers.

Or

5. (a) What is meant by splicing? How splicing is achieved?

(b) What are different types of connectors and couplers and in fibers?

UNIT III

6. (a) Explain the working of DH injection laser.

(b) Discuss Avalanche photodide and its characteristics.

Or

7. (a) Explain different lensing schemes to improve power coupling.

(b) Derive an expression for threshold condition and operating currents in laser diode.

UNIT IV

8. (a) Write short notes on SONET and its layers.

(b) Write short notes on WDM multiplexers and demultiplexers.

Or

9. (a) Write about Direct Intensity modulation and where it is used.

(b) Explain how do you measure dispersion losses of a fiber.

———————

(DEC 423)




Paper IX – MOBILE AND CELLULAR COMMUNICATION(WAVES)


Answer Question No.1 compulsorily. (15 × 1 = 15)

Answer ONE question from eac h unit. (4 × 15 = 60)

1. Write briefly on the following:

(a) Define hand off.

(b) What is meant by frequency re-use?

(c) What type of antennas are used for cell and mobile phones?

(d) Define interference in cell communications.

(e) Define ground wave propagation.

(f) What is meant by reflection and diffraction?

(g) What are the different fading effects?

(h) Write the applications of GSM system.

(i) Define polarization.

(j) What are the different diversity methods?

(k) What is the importance of base station system.

(l) What is protocol and gate way?

(m) Write any two advantages of fixed channel assignment.

(n) Write the advantages of wireless mobile systems.

(o) Compare with 2G what are advantages of 3G system.

UNIT – I

2. (a) Write about the evolution of mobile radio communication?

(b) What is meant by handoff and explain the handoff strategies?

Or

3. (a) Write a short notes on:

(i) Paging system.

(ii) Cordless telephone system.

(b) How we can improve coverage and capacity in cellular system?

UNIT – II

4. (a) Explain the concept of free space propagation model.

(b) What are the various types of equilizers and explain any two of them in detail?

Or

5. (a) Explain about time diversity and frequency diversity methods.

(b) Write the differences between linear equalizers and nonlinear equalizer.

UNIT – III

6. (a) Explain the GSM architecture with diagram.

(b) Write a brief notes on IS-95 architecture.

Or

7. (a) Explain about location tracking and cell set up with diagram.

(b) What is base station and explain about network and switching sub systems?

UNIT – IV

8. (a) Explain about WAP model system with diagram.

(b) What is a GPRS system and explain their functional groups?

Or

9. (a) Write about paradigm shifts in 3G system.

(b) What is meant by layering structure in W-CDMA?

––––––––––

(DEC 424 A)




Paper X – DIGITAL IMAGE PROCESSING


Answer Question No. 1 compulsory. (15)

Answer ONE question from each unit. (4 × 15 = 60)

1. (a) What is Image sampling? (2)

(b) List the application of DIP. (2)

(c) List few properties of fourier transform. (3)

(d) What is Histogram? (2)

(e) Explain boundary descriptors. (2)

(f) Define lossy compression. (2)

(g) What is an Image restoration? (2)

UNIT I

2. (a) Explain about elements of visual perception.

(b) Discuss the advantages of colour Images over monochrome images.

Or

3. (a) Explain the fundamental steps of DIP?

(b) Explain the relations between pixels, linear and non linear operations.

UNIT II

4. (a) Explain various methods for image enhancement in spatial and frequency domain.

(b) Write the characteristics of averaging and median filtering techniques.

Or

5. (a) Explain about the frequency domain filters used in DIP.

(b) Explain the operation of histogram equatisation.

UNIT III

6. (a) Explain various image compression models.

(b) Explain about the weiner filtering.

Or

7. (a) Explain about inter pixel redundancy and psycho-visual redundancy.

(b) Discuss the restoration of an Image in the presence of Noise.

UNIT IV

8. (a) Explain about various edge detection techniques.

(b) Explain regional descriptors.

Or

9. (a) Explain thresholding in image segmentation.

(b) Explain about discontinuities in an Image. And write about line and point

detection.

——————

(DEC 424 B)




Paper X — MICROCONTROLLERS AND EMBEDDED SYSTEMS




1. (a) What is the difference between Micro processors and microcontrollers?

(b) What is the difference between serial and parallel communications?

(c) Define interfacing.

(d) What is the significance of pipelining in microcontroller?

(e) List out different input and output interface devices.

(f) Define embedded systems.

(g) What is Mutex?

(h) Define addressing mode.

(i) Give the instruction format of microcontroller 8031.

(j) Define task.

(k) List out various interrupts of 8031 microcontroller.

(l) Define HLDA.

(m) What is the significance of memory management in embedded systems?

(n) Give the specifications of timer.

(o) Define USB.

UNIT I

2. (a) Classify the instructions set of 8031 Microcontroller.

(b) Explain interrupt structure and interrupt priorities.

Or

(c) Draw and explain the architecture of 8031 Microcontroller.

(d) Give overview on 8031 family.

UNIT II

3. (a) Explain the modes of operation of Timer/Counter.

(b) Give the standards of parallel communication standards (PCI).

Or

(c) Define serial port and explain its modes of operation.

(d) Discuss the features of serial communication standards RS 232 C

UNIT III

4. (a) Draw and explain the architecture of embedded system.

(b) Explain hard and soft real time embedded system.

Or

(c) Give the architecture of the Kernel.

(d) Write a short notes on Message Queues.

UNIT IV

5. (a) Explain interrupt service mechanism.

(b) Discuss adaptive cruise control system working.

Or

(c) List out issues involved in designing embedded systems.

(d) Explain the writing drivers mechanism for printers.

———————–––

Documents

(DEC 411) - anucde.info · (d) Explain cylindrical Magnetron. UNIT II 3. (a) Draw and explain of H-plane Tee. (b) Draw equivalent circuit of Magic Tee and explain in detail