Television Engineering - May 2013
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. 1 (a) List the type of AGC and only describe the basic operation of AGC used in TV Receiver.(5 marks) 1 (b) What is colour burst? What is the importance of back porch in CVS?(5 marks) 1 (c) Explain compatibility considerations in TV system.(5 marks) 1 (d) State the specification of CCIR-B monochrome TV system. (5 marks) 2 (a) Explain Interlaced Scanning with the help of a neat diagram also explain how it is better than Sequential scanning.(10 marks) 2 (b) Draw the neat block diagram of NTSC coder and decoder and explain its functioning.(10 marks) 3 (a) Draw neat diagram to indicate sync separator section in TV system and explain it.(10 marks) 3 (b) Explain PAL coder system. How phase error are cancelled in PAL system?(10 marks) 4 (a) Compare Delta gun, PIL and trinitron colour picture tube.(10 marks) 4 (b) Give Reasons:-
(i) Why (G-Y) is not selected for transmission?
(ii) All TV standards have odd no. of lines(10 marks) 5 (a) With the help of a neat sketch, explain the functioning of image orthicon camera tube. State its drawbacks.(10 marks) 5 (b) Draw Digital TV receiver and explain its working.(10 marks) 6 (a) What is EIA test pattern? Draw and explain EIA pattern with its utility. (10 marks) 6 (b) With the help of neat diagram explain functioning of cable television.(10 marks)
Write short notes on:-
7 (a) HDTV.(5 marks) 7 (b) Flyback Transformer.(5 marks) 7 (c) Chromaticity diagram.(5 marks) 7 (d) Frequency interleaving.(5 marks)