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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 14
46.
Which of the following is invariably found in SSB?
Tuned modulator
Class B, RF amplifier
Class C, audio amplifier
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
In the spectrum of a frequency modulated wave
carrier frequency cannot disappear
carrier frequency vanishes when modulation index is large
the number of significant sidebands depends upon modulation index
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Which of the following pulse communication system is inherently immune to noise?
PPM
PCM
PWM
PAM
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
In a PCM system, if we increase the quantization levels from 2 to 8, how do the relative bandwidth requirements vary?
Get doubled
Get tripled
Remains same
Become eight times
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
If the target area is small compared to wavelength of radar the situation is called
resonance region
Rayleigh region
optical region
binomial region
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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