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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 11
1.
At a given probability of error, binary coherent FSK is interior to binary coherent PSK by
6 dB
3 dB
2 dB
0 dB
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
In a TV receiver the video IF amplifier provides a gain of about
5 dB
20 dB
60 dB
200 dB
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Which of the following analog modulation scheme requires the minimum transmitted power and minimum channel bandwidth?
VSB
DSB-SC
SSB
AM
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Switching systems
are limited to small data networks
require additional lines
are not used in data system
improve the efficiency of data transfer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Which one of the following statements is wrong. The radar cross-section of a target?
depends on frequency
may be reduced by special coating of non-spherical target
depends on the aspect of target if it is non-spherical
is equal to actual cross-sectional area for small targets
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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