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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 22
36.
Which of the following is an indirect method of generating FM?
Reactance BJT modulator
Armstrong modulation
Varactor diode modulation
Reactive FM modulator
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Figure of merit is always unity in
AM
SSB-SC
FM
All
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Which of the following modulation is analog in nature?
PCM
DPCM
DM
PDM
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
In the spectrum of a FM wave
the carrier frequency cannot disappear
the carrier frequency disappears when the modulation index is large
the amplitude of any sideband depends on the modulation index
the total number of sidebands depends on the modulation index
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
The gap width in audio heads is about 0.01 mm.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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