Andhra University 2007 B.E Electronics & Tele-Communication Engineering TV And Satellite Communication - Question Paper

First ques. is compulsory
ans any 4 out of the remaining ques.
All ques. carry equal Marks
1)
(a) what is the purpose of Horizontal blanking and vertical blanking pulses w.r.t TV.
(b) list any 2 difference ranging from Black and White TV and Colour TV
(c) what is color sub carrier? what write functions?
(d) discuss why VSB is used for ipcture Transmission.
(e) What is a Launch Vehicle?
(f) List any 2 advantages of TDMA over FDMA
(g) List the functions of Earth station

2)
(a) Derive an expression for B.W. needed for video and audio signals for T.V. Trion
(b) What is Interlaced Scanning? discuss.

3)
(a) discuss the principle of working of Vidicon
(b) Draw Horizontal sync and name the parts along with their duration.

4)
(a) Draw the block diagram of monchrome TV Receiver and discuss every block briefly.
(b) What is meant by VSB correction? Expalin

5)
(a) discuss the following?
(i) F.H.T. generation
(ii) Sync separation ckte.
(b) discuss the significance of chromaticity diagram.

6)
(a) Wthe the help of block diagram and discuss NTSC Encoder.
(b) With the help of block diagram discuss PAL decoder.

7)
(a) discuss the terms in relation to satellite systems:
(i) Look angle
(ii) Noise temperature
(iii) G/T ratio.

(b) Determine the maximum and minimum range in km from an earth station to a geo synchronour satellite to what round trip propagation times do these correspond.

8)
(a) elaborate various sub systems of satellite? explain elementary, trucking and control systems.
(b) discuss TDMA frame structure for a satellite system.

Earning:   Approval pending.