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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 24
1.
A telephone channel requires a bandwidth of about
1 kHz
3 kHz
10 kHz
50 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
For a given carrier wave, maximum undistorted power is transmitted when value of modulation is
1
0.8
0.5
0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
As per Shannon-Hartley theorem, a noise less Gaussian channel has
zero capacity
infinite capacity
small capacity
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
DVD uses
Laser beam for both recording and playback
Laser beam for recording and video head for playback
Video head for recording and laser beam for playback
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Fourier analysis indicate that a square wave can be represented as
a fundamental sine wave and odd harmonics
a fundamental sine wave and even harmonics
a fundamental sine wave and harmonics
fundamental and subharmonic sine waves
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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