Exercise: Communication Systems

Questions for: Communication Systems

Which of the following statement regarding single-sideband (SSB) transmission is not correct?
A:
In such transmission only or sideband is transmitted, leaving of the other sideband and the carrier
B:
It has gained general acceptance of use in home-entertainment equipment
C:
It is generally reserved for point-to-point communication
D:
The amount of power and bandwidth necessary to be transmitted for a given amount of information are appreciable reduced
Answer: B
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In the above case the modulation index will be
A:
9.6
B:
28.8
C:
57.6
D:
100
Answer: D
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The intermediate frequency of a superheterodyne receiver is 450 kHz. If it is tuned to 1200 kHz, the image frequency will be
A:
750 kHz
B:
900 kHz
C:
1600 kHz
D:
2100 kHz
Answer: D
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The highest modulation frequencies typically used in FM broadcast is
A:
5 kHz
B:
10 kHz
C:
15 kHz
D:
25 kHz
Answer: C
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Modulation system used for video-modulation in television broadcast is
A:
SSB AM with carrier
B:
SSB with carrier suppressed
C:
DSB AM with carrier
D:
a modified form of SSB with carrier called vestigial sideband
Answer: D
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