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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 9
26.
Modulation system used for video-modulation in television broadcast is
SSB AM with carrier
SSB with carrier suppressed
DSB AM with carrier
a modified form of SSB with carrier called vestigial sideband
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
The highest modulation frequencies typically used in FM broadcast is
5 kHz
10 kHz
15 kHz
25 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
The intermediate frequency of a superheterodyne receiver is 450 kHz. If it is tuned to 1200 kHz, the image frequency will be
750 kHz
900 kHz
1600 kHz
2100 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
In the above case the modulation index will be
9.6
28.8
57.6
100
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Which of the following statement regarding single-sideband (SSB) transmission is not correct?
In such transmission only or sideband is transmitted, leaving of the other sideband and the carrier
It has gained general acceptance of use in home-entertainment equipment
It is generally reserved for point-to-point communication
The amount of power and bandwidth necessary to be transmitted for a given amount of information are appreciable reduced
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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