Electronics and Communication Engineering - Communication Systems

26.
In the human eye, an image persists for a time of about
1 second
0.1 second
0.05 second
0.02 second
Answer: Option
Explanation:
No answer description is available. Let's discuss.

27.
The different channels in a TDM receiver are separated by
integration
differentiation
AND gate
OR gate
Answer: Option
Explanation:
No answer description is available. Let's discuss.

28.
In a pulsed RADAR typical value of pulse duration and pulse frequency respectively are
1 μs and 50 Hz
1 μs and 500 Hz
4 μs and 50 Hz
4 μs and 500 Hz
Answer: Option
Explanation:
No answer description is available. Let's discuss.

29.
In a hi-fi system the nonlinear distortion should be less than
10%
5%
2%
1%
Answer: Option
Explanation:
No answer description is available. Let's discuss.

30.
A pure tone at 1000 Hz has a dB level of 50 dB. If two such tones exist simultaneously the dB level is about
50 dB
53 dB
100 dB
200 dB
Answer: Option
Explanation:
No answer description is available. Let's discuss.