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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 24
11.
Which of the following is a digital modulation technique?
PCM
PSK
DM
All
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Which of the following is used to generate PDM?
Free running multi-vibrator
Monostable multi-vibrator
JK flip-flop
Schmitt trigger
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
SSB can be generated by
filter method
phase cancellation method
good attenuation characteristics
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
A zero mean white Gaussian noise is passed through an ideal low pass filter of bandwidth 10 kHz. The output of the samples so obtained would be
correlated
statistically independent
uncorrelated
orthogonal
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
What is the purpose of peak clipper circuits in radio transmitters?
To prevent overmodulation
To reduce bandwidth
To increase bandwidth
To regulate oscillator I/P voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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