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Communication Systems

Communication Systems
The frequency range of 300 kHz to 3000 kHz is known as

Medium frequency
Low frequency
High frequency
Very high frequency

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Communication Systems
The maximum power output of a standard A earth station over the total band allocated to satellite communication is about

20 kW
8 kW
0.5 kW
50 kW

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Communication Systems
SSB can be generated by

All of these
Good attenuation characteristics
Filter method
Phase cancellation method

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Communication Systems
Which of the following is used to generate PDM?

Schmitt trigger
JK flip-flop
Monostable multi-vibrator
Free running multi-vibrator

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Communication Systems
A zero mean white Gaussian noise is passed through an ideal low pass filter of bandwidth 10 kHz. The output of the samples so obtained would be

Statistically independent
Uncorrelated
Correlated
Orthogonal

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Communication Systems
Which of the following is an indirect way of generating FM?

Reactance bipolar transistor
Reactance FET modulator
Armstrong modulator
Varactor diode modulator

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