Question 21 : Noises which get generated within the receiver is called ________
1. Internal noise
2. External noise
3. Man-made noise
4. Extraterrestrial noise
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Question 22 : In amplitude modulation, magnitude of side bands is ________ times the carrier amplitude.
1. ^ma⁄₂
2. 4ma
3. ma
4. 2ma
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Question 23 : For a human eye the minimum viewing angle of resolution should be ^?⁄_D where D is iris opening and ? is wavelength of light.
1. True
2. False
3.
4.
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Question 24 : Television transmission is possible through ________
1. DSB-SC
2. SSB-SC
3. VSB
4. AM
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Question 25 : The advantage of using mechanical filter in filter system of sideband suppression is good band pass.
1. True
2. False
3.
4.
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Question 26 : The output stage in a television transmitter is likely to be ________
1. screen modulated
2. plate modulated
3. rectangular modulated
4. grid modulated
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Question 27 : Local programmes in a cable TV can be telecast at any frequency.
1. True
2. False
3.
4.
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Question 28 : White noise is a synonym of ________
1. partition noise
2. shot noise
3. johnson noise
4. transit time noise
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Question 29 : A trigonometric function is a synonym of ________
1. triangular function
2. orthogonal function
3. singular function
4. rectangular function
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Question 30 : In a Vidicon camera tube, both sides of the target plate have the coating of antimony tri-sulphide.
1. True
2. False
3.
4.
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