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Pune University - Sem - II : Communication Electronics, April 2010 (Old Course)

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Total No. of Questions : 5] P1164 [Total No. of Pages : 4 [3729]-23 M.Sc. ELECTRONIC SCIENCE EL2 UOT03 : Communication Electronics (Old Course) (Semester - II) Time : 3 Hours] [Max. Marks : 80 Instructions to the candidates: 1) 2) 3) All questions are compulsory. Figures to the right indicate full marks. Draw neat and labelled diagrams wherever necessary. Q1) Attempt any four of the following : [4 4 = 16] a) What are sources of noise? Establish frequency domain characterization of noise. b) Define i) Sensitivity, ii) Selectivity, iii) Signal to noise ratio, iv) Dynamic range with context to Am-receiver. c) Compare ratio detector and discriminator in FM detectors. d) What is companding? What are its advantages in digital communication? e) Compare between voice and data transmission. Q2) Attempt any two : [2 8 = 16] a) Explain FM transmitter and receiver with block diagram. b) What are the sections of internal layout of communication satellite. Draw and explain single channel transponder block diagram. c) Explain Pulse Amplitude Modulation and recovery of the PAM signal in detail. Q3) Solve any two : [2 8 = 16] a) Explain the importance of bit oriented protocol. Draw the basic format of SDLC and HDLC messages. Give the significance of each field. P.T.O.

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Additional Info : M.Sc. - I Electronic Science, EL2 UOT 03 : Communication Electronics (Old Course) (Semister - II), Pune University
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