On a search of old question papers of Andhra University B.E/B.Tech degree course? You can find all question papers B.E ECE question Papers. Here under is a paper that was conducted in the B.E exam 2013 year. The paper is TV & Satellite Communication. Get it now!
Andhra University
B.E Degree Examination
First Semester - 2013/14
Electronics and Communication Engineering
ECE – 413 TV & SATELLITE COMMUNICATION
Time : 3 Hrs. Maximum Marks: 70
Answer any five questions, question 1 is compulsory.
All questions carry equal marks.
1. Answer all questions.
(a) What is Scanning?
(b) What is importance of synchronizing pulses?
(c) What is color burst?
(d) Write on the choice of IF in TV receiver?
(e) Give the reasons for using VSB and not SSB for TV.
(f) Explain the terms : Contrast, Tonal, Gradation.
(g) Draw the circuit of video detector?
2. (a) Draw the block diagram of monochromes TV receiver and explain the function of each and every block. What is meant by active scan area of a TV image? Explain.
3. (a) Derive the formula for the bandwidth of a TV signal as per Indian standards.
(b) Explain the purpose of interlaced scanning. Discuss the advantage over sequential scanning.
4. (a) Compare the construction and characteristics of the image orthicon and vidicon
camera tubes.
(b) Discuss the advantage of keyed AGC over the other forms.
5. (a) What are the features of color TV system. Draw the block diagram of color TV and explain.
(b) Explain how is it possible that chrominance and luminance signals could be accommodated in the same bandwidth.
6. (a) Why is the uplink frequency different from down link frequency in a satellite communication system and explain.
(b) Derive the general link design equations. Find out the expression for C/N and G/T relation.
7. (a) Draw the layout of a typical earth station. What are the essential characteristics of an earth station.
(b) Draw the simplified functional block diagram of a single channel transponder.
8. Write a short notes on
(a) Evolution of satellite communications
(b) CDMA
(c) Antennas used in space craft
Andhra University
B.E Degree Examination
First Semester - 2013/14
Electronics and Communication Engineering
ECE – 413 TV & SATELLITE COMMUNICATION
Time : 3 Hrs. Maximum Marks: 70
Answer any five questions, question 1 is compulsory.
All questions carry equal marks.
1. Answer all questions.
(a) What is Scanning?
(b) What is importance of synchronizing pulses?
(c) What is color burst?
(d) Write on the choice of IF in TV receiver?
(e) Give the reasons for using VSB and not SSB for TV.
(f) Explain the terms : Contrast, Tonal, Gradation.
(g) Draw the circuit of video detector?
2. (a) Draw the block diagram of monochromes TV receiver and explain the function of each and every block. What is meant by active scan area of a TV image? Explain.
3. (a) Derive the formula for the bandwidth of a TV signal as per Indian standards.
(b) Explain the purpose of interlaced scanning. Discuss the advantage over sequential scanning.
4. (a) Compare the construction and characteristics of the image orthicon and vidicon
camera tubes.
(b) Discuss the advantage of keyed AGC over the other forms.
5. (a) What are the features of color TV system. Draw the block diagram of color TV and explain.
(b) Explain how is it possible that chrominance and luminance signals could be accommodated in the same bandwidth.
6. (a) Why is the uplink frequency different from down link frequency in a satellite communication system and explain.
(b) Derive the general link design equations. Find out the expression for C/N and G/T relation.
7. (a) Draw the layout of a typical earth station. What are the essential characteristics of an earth station.
(b) Draw the simplified functional block diagram of a single channel transponder.
8. Write a short notes on
(a) Evolution of satellite communications
(b) CDMA
(c) Antennas used in space craft
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