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Communication Systems

Communication Systems
Under ordinary circumstances, impulse noise can be reduced in

None of these
FM only
AM only
Both AM and FM

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Communication Systems
In practical commercial FM system, channel bandwidth is

108 MHz
150 kHz
100 kHz
88 MHz

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

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

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Communication Systems
A three stage telephone switching structure is to have 128 input and 128 output terminals. There are 16 first stage and 16 third stage matrices. To avoid blocking the number of intermediate paths required is

15
16
8
1

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

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

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Communication Systems
A telephone channel requires a bandwidth of about

10 kHz
3 kHz
50 kHz
1 kHz

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