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Communication Systems

Communication Systems
A modem is classified as low speed if data rate handled is

Upto 400 bps
Upto 250 bps
Upto 100 bps
Upto 600 bps

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Communication Systems
In a TV receiver antenna the length of reflector rod

May be equal, more or less than that of dipole
Is the same as that of dipole
Is less than that of dipole
Is more than that of dipole

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Communication Systems
A woofer should be fed from the input through a

Band pass filter
Band stop filter
High pass filter
Low pass filter

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Communication Systems
Which of the following does not cause losses in optical fibre cables?

Attenuation in glass
Impurities
Microbending
Stepped index operation

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Communication Systems
If output power of a radio receiver is doubled, its volume is increased by __________ dB.

1
3
-3
2

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Communication Systems
SSB can be generated by

Good attenuation characteristics
All of these
Filter method
Phase cancellation method

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