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Communication Systems

Communication Systems
A telephone channel requires a bandwidth of about

1 kHz
10 kHz
3 kHz
50 kHz

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Communication Systems
In practical commercial FM system, channel bandwidth is

100 kHz
88 MHz
150 kHz
108 MHz

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

Low frequency
Very high frequency
Medium frequency
High frequency

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Communication Systems
If output power of a radio receiver is doubled, its volume is increased by __________ dB.

1
-3
3
2

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Communication Systems
SSB can be generated by

Phase cancellation method
Good attenuation characteristics
All of these
Filter method

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

0.5
1
0.8

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