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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 22
1.
Which of the following form of angle modulation in this? If e = 10 sin(108 t + 3 sin 104 t)
AM
FM
AM or FM
AM or PCM
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The noise performance of a square law demodulator of AM signal is
better than that of an envelope detector
better than that of a synchronous detector
identical with that of a synchronous detector
poorer than that of an envelope detector
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
In AM the amplitude of carrier components ... while in FM it
remains constant, does not remain constant
does not remain constant ... remains constant
remains constant... also remains constant
does not remain constant, also does not remain constant
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
In a colour TV receiver, the function of comb filter is
to pass only the clusters of monochrome signal energy while blocking chrome signals
to pass only chrome signals and block monochrome signals
to block both monochrome and chrome signals
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
A communication receiver is
TRF receiver
a superheterodyne receiver
either (a) or (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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