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Communication Systems

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

Cheaper
Almost equally costly
None of these
Costly

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Communication Systems
For a given carrier wave, maximum undistorted power is transmitted when value of modulation is

0.8
0.5
1

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Communication Systems
Fourier analysis indicate that a square wave can be represented as

A fundamental sine wave and harmonics
A fundamental sine wave and odd harmonics
Fundamental and subharmonic sine waves
A fundamental sine wave and even harmonics

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

Zero capacity
Infinite capacity
None of these
Small capacity

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

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

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Communication Systems
It is found that a ship to ship communication suffers from fading. This can be avoided by using

Broad band antenna
Frequency diversity
Space diversity
Directional antenna

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