Cochin University of Science and Techology (CUST) 2008 B.Tech Electrical and Electronics Engineering COMMUNICATION ENGINEERING - Question Paper

COMMUNICATION ENGINEERING (EEE APRIL 2008)



1a. discuss an AM modulator with block diagram
b. What is meant by modulation index in AM? What is its importance?
c. Write notes on VSB transmission
2a. discuss Amstrong modulator
b. Compare FM and PM with the help of mathematical expressions
3a. Differentiate ranging from low level and high level AM transmitters
b. discuss the issue of images and methods used to overcome it
4a. discuss the FM sterio receiver
b. discuss PAM, PWM, PPM
5a. What is the effect of ground on antennas?
b. discuss various modes of electro magnetic wave propagation
6a. Differentiate ranging from resonant antennas and non-resonant antennas
b. define high frequency directional antennas
7a. Write detailed notes on cavity resonators
b. discuss various kinds of microwave antennas
8a. With neat sketches discuss the working of a Klystron
b. With the help of a block diagram, discuss different subsystems in a communication satellite
9a. Draw the block diagram of an optical fibre communication system and discuss
b. discuss facsimile system
10a.Explain how a distant object is detected using pulsed radar system
b. discuss the details of a color television transmitter with neat sketches

Earning:   Approval pending.