MU Electronics and Telecom Engineering (Semester 6)
Television Engineering
May 2015
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) An odd number of lines are chosen in television system for scanning Justify.
5 M
1 (b) What is compatibility in TV transmission? What are the requirements to be met to make the colour system fully compatible?
5 M
1 (c) Compare Plasma, LED and LCD displays.
5 M
1 (d) Explain in brief Direct-to-home TV (DTH).
5 M

2 (a) Explain with the help of suitable sketch, how is video signal developed in a Vidicon camera tube? How is different from other camera tubes and what are its special applications?
10 M
2 (b) Draw the block diagram of PAL TV receiver and explain the working and functions of each block.
10 M

3 (a) What is the difference between component video and composite video? Give the main features by CCIR Rec. 601 for digital video standards.
10 M
3 (b) Describe new TV standards and compatibility adopted for HDTV. Explain MUSE system and its advantages.
10 M

4 (a) Sketch composite video signal waveform for at least three successive line and indicate:
i) Extreme white level
ii) Blanking level
iii) Pedestal height
iv) Sync. Pulse level
5 M
4 (b) Only (R-Y) and (B-Y) colour difference signals along with luminance signal is chosen for transmission. Justify the statement. Also explain why it is necessary to weight down the chrominance signal.
10 M
4 (c) What are the technical advantages of usig digital technology in television systems?
5 M

5 (a) What is the need of MAC encoding? Explain the general format of MAC signals for transmitting colour TV signals.
10 M
5 (b) Explain the following terms of Digital video.
i) Digitization
ii) Viewing distance and angle
iii) Aspect ratio.
10 M

6 (a) Explain Interlace Scanning? Calculate the percentage of interlace error when the second field is delayed by 16 microseconds. Retrace time may be assumed to be negligible.
10 M
6 (b) Write a note on Wide Dimension High Definition Television and its standards.
10 M



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