Gujarat Technological University 2011-6th Sem B.E , 161002 - Audio Video System on - Question Paper
GUJARAT TECHNOLOGICAL UNIVERSITY
BE SEM-VI Regular exam May 2011
Subject code: 161002
Subject Name: Audio Video System
Date: 17/05/2011 Time: 10.30 am – 01.00 pm
Total Marks: 70
GUJARAT TECHNOLOGICAL UNIVERSITY
BE SEM-VI Regular Examination May 2011
Seat No.: Enrolment No.
Subject code: 161002 Subject Name: Audio Video System
Time: 10.30 am - 01.00 pm Total Marks: 70
Date: 17/05/2011
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Draw the cross section of cochlea. And explain each parts of it. Also 07 explain mental process
Q.1 (a (b
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Q.4 (a (b
Draw the circuit diagram of the class B push pull amplifier 07
And explain it. Derived the equation for efficiency of it. Also explain all distortion regarding class B push pull amplifier.
Draw the figure of video tape recording and video reproduction and 07 explain it. Also explain any one techniques of video compression.
In a two stage audio amplifier, What amount of gain is required for first 07 stage to get total gain of 70.5dB if the second stage gain is 56 ?
OR
What is stereophony ? Explain all stereophonic system and other multi- 07 channel sound system.
List the microphones used in audio devices and explain any two in detail. 07 Also classify all microphones according to their application.
Write the principle of loudspeaker and explain it. Also write the 07 characteristics that decides quality of operation of loudspeaker and explain it. Also write significance of enclosure.
OR
Draw the dimension of video signal and explain it in detail 07
Also explain all kind of synchronization in detail .
Write characteristics of colours. Also list the mixing techniques of colour 07 and explain it. Which techniques is best? Why?
Which modulation system is used for picture and sound? Why? Explain it 07 in detail also give the comparison of positive and negative modulation which one is mostly used? Why?
List the types of interference take place in Television communication 07 system and explain it. Also give the solution to remove such interferences.
OR
Draw the block diagram of colour or monochrome television receiver and 07 explain it in detail.
List the types of picture tubes used for colour reception and explain any 07 one of them. Also give the comparisons of all the picture tubes.
Q.5 (a) Classify the Advance Digital Television system and explain it with 07 required figure.
(b) What is LCD ? Explain all types of display technology used in LCD and 07 explain it. Also give its comparisons.
OR
Q.5 (a) List the types of Television systems and standard used worldwide and 07 explain it in detail
(b) Explain all kind of problem occurred in picture tube and gives its solution 07 that can help during servicing.
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