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Communication Systems

Communication Systems
As per Shannon-Hartley theorem, a noise less Gaussian channel has

Infinite capacity
None of these
Zero capacity
Small capacity

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Communication Systems
In TV systems, equalising pulses are sent during

Vertical blanking
Horizontal retrace
Serrations
Horizontal blanking

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Communication Systems
If in a broadcasting studio, a 1000 kHz carrier is modulated by an audio signal of frequency range 100-5000 kHz, the width of channel is __________ kHz.

5
4.9
10
995

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Communication Systems
PAM stands for

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

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

Impurities
Attenuation in glass
Stepped index operation
Microbending

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Communication Systems
FM transmitting and receiving equipment as compared to AM equipment is

Costly
Cheaper
Almost equally costly
None of these

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