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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 21
36.
In pulse code modulation, if the signal is sampled at the rate of f and the number of pulses in one code group is p, then the number of pulses per second will be
p/f
f/p
1/pf
pf
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
A narrow band FM does not have the following feature
it has two sidebands
both sideband equal in magnitude
both sideband have same Phase Difference
it does not show Amplitude variation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
When number of quantization levels are two, then the average transmission power in NRZ polar signalling is __________ that of NIRZ unipolar signalling.
None
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
In telecast
video and audio signals are frequency modulated
video signals are frequency modulated but audio signals are amplitude modulated
both audio and video signals are amplitude modulated
video signals are amplitude modulated and audio signals are frequency modulated
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
A pulse width signal can be governed by
free running multi-vibrator
monostable multi-vibrator
Schmitt trigger
JK flip-flop
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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