| TV ENGINEERING |
| PAPER NO. 3 |
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| PUT ON: dEC, 2k2 |
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EC-402 TV ENGINEERING (B.Tech 8th Semester,2063) Time : 3 Hours Maximum Marks : 60 NOTE:- This paper consist of Three Sections. Section A is compulsory. Do any Four questions from Section B and any two questions from Section C Section-A Marks : 20 1(a) Determine the number of lines get traced during each vertical tra line TV Sysyem. (b) What is vestigial side band transmission? (c) What is operating principle of black and white camera tube ? (d) Describe constituents of a composite video signal. (e) What is the significance of a cromaticity diagram ? (f) What is the difference between image multiplication and signal multiplication in image orthicon camera tube ? (g) What is the function of Sync. separator in TV reciever. (h) What do you know about three color theory? (i) What is frequency interlieving? (j) What is the function of a video detector in TV reciever? Section-B Marks:5 Each 2. What is Luminious signal? How is it generated in colored camera tube? Explain with the help of a diagram. 3. What do you understand by low frequency composition ? Why is it necessary? 4. Expalin VHF tunner with a block diagram . 5. What is compatibility and what are its various requirements? 6. Explain the design requirements of the IF section of a TV reciever . Section-C Marks : 10 Each 7. Draw and explain cross section view of image of orthicon camera tube. Also explain how is tis target plate is different from that of a vidicon camera tube . 8. What is a flicker? Explain in detail the technique used to reduce it in 625 line TV system. 9. What is the difference between negative and positive modolation? Which type of modolation is preffered for TV signal transmission and why? |
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