Television Engineering - Dec 2012

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) Why sound signal is called InterCarrier Sound Signal? (5 marks) 1 (b) What are the advantages and disadvantages of using digital techniques in a TV system?(5 marks) 1 (c) Differentiate between unicast and multicast of streaming real time audio and video over a network.(5 marks) 1 (d) The SMPS is suitable power supply for TV. Explain it.(5 marks) 2 (a) Draw the block diagram of monochrome TV transmitter and explain the functioning of it.(10 marks) 2 (b) Explain the working of DTH setup with the help of a neat diagram.(10 marks) 3 (a) What are the various streaming media protocols? Explain any one in detail.(10 marks) 3 (b) Draw the cross sectional view of an image orthicon and explain how it develops signal when light from any scene is focussed on its face plate.(10 marks) 4 (a) Compare Image orthicon, Plumbicon and Vidicon camera tubes. Which type of camera tube is the best and why?(10 marks) 4 (b) Draw neat diagram of SECAM encoder and decoder. Explain functioning of it.(10 marks) 5 (a) Explain the principles of digital TV with the help of a neat diagram.(10 marks) 5 (b) Draw a neat schematic of Cable TV network and explain. (10 marks) 6 (a) Draw Chromaticity diagram and explain it and what information can be obtained from it.(10 marks) 6 (b) Explain the basic trouble-shooting procedure that must be employed to quickly localize the fault in a TV receiver.(10 marks) 7 (a) Explain the working of solid state image Scanners. (10 marks) 7 (b) What are the different types of picture tubes available? Explain any one in detail. (10 marks)