Television Engineering - Dec 2014

Electronics & Telecomm. (Semester 6)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.

Answer the following:-

1 (a) In T.V. why AM is preferred over FM picture Modulation.(5 marks) 1 (b) In color T.V. Transmission. What is the purpose of color sub carrier?(5 marks) 1 (c) What is LNBC? Explain with the help of Block Diagram.(5 marks) 1 (d) Explain in brief RTCP streaming video protocol.(5 marks) 2 (a) What is the Drawback of Sequential Scanning? How it is overcome in Interlace Scanning? Explain Interlace Scanning in Detail.(10 marks) 2 (b) Explain the color T.V. Camera System. What is the purpose of Dichromic lens in it?(10 marks) 3 (a) Explain the working of Vidicon Camera tube. What do you mean by dark current?(10 marks) 3 (b) What do you mean by color burst Signal? Explain how it is generated and transmitted.(10 marks) 4 (a) Explain the working of T.V. pattern generator used for testing of T.V.(10 marks) 4 (b) With the help of Block Diagram explain B/W T.V. Receiver.(10 marks) 5 (a) Compare NTSC, PAL and SECAM TV Standards.(10 marks) 5 (b) Draw and explain color killer circuit used in color T.V. Receiver.(10 marks) 6 (a) With the help of Block Diagram explain in brief working of Satellite T.V. Receiver.(10 marks) 6 (b) Draw and explain PIL Picture Tube and compare its performance with Delta Gun.(10 marks)

Write short notes on (any two):-

7 (a) Deguassing used in Picture Tube.(10 marks) 7 (b) EIA Pattern(10 marks) 7 (c) MATV and CATV.(10 marks)