Exercise: Communication Systems

Questions for: Communication Systems

The width of air gap on recording head in a tape recorder is about
A:
6 micron
B:
3 micron
C:
1 micron
D:
25 micron
Answer: A
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In AM, if modulation index is more than 100%, then
A:
bandwidth increases
B:
the wave gets distorted
C:
power of the wave increases
D:
efficiency of transmission increases
Answer: B
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Audio and video signals are called modulating waves.
A:
True
B:
False
C:
D:
Answer: A
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Indicate the false statement: To combat noise
A:
reduce signalling rate
B:
increase transmitted power
C:
use redundancy
D:
increase channel bandwidth
Answer: D
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RF choke used for suppressing interference in TV is generally
A:
honey comb wound coil
B:
iron core coil
C:
single layer coil
D:
multilayer coil
Answer: B
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