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Communication Systems

Communication Systems
In TV systems, equalising pulses are sent during

Horizontal blanking
Vertical blanking
Serrations
Horizontal retrace

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Communication Systems
In a FM receiver, amplitude limiter

None of these
Eliminates any change in amplitude of received FM signals
Amplifiers low frequency signals
Reduces the amplitude of signals

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

None of these
Both AM and FM
AM only
FM only

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Communication Systems
PAM stands for

Pulse Amplitude Modulation
Pulse Analogue Modulation
Phase Amplitude Modulation
Phase Analogue Modulation

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Communication Systems
The disadvantage of FM over AM is that

High output power is needed
High modulating power is needed
Large bandwidth is required
Noise is very high for high frequency

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Communication Systems
SSB can be generated by

Filter method
Good attenuation characteristics
Phase cancellation method
All of these

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