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Communication Systems

Communication Systems
Full duplex operation permits transmission in both directions at the same time.

False
True

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Communication Systems
To eliminate ghosts in the picture

Change the antenna orientation of location
Use a longer transmission line
Connect a booster
Twist the transmission line

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Communication Systems
A buffer amplifier is

A cathode follower stage
A high gain D.C. amplifier
A double-tuned amplifier
None of these

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Communication Systems
Which one of the following is analog?

Delta modulation
PCM
Differential PCM
PWM

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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
If sampling is done at the rate of 10 kHz. The bandwidth required is

35 kHz
70 kHz
1280 kHz
10 kHz

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