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Communication Systems

Communication Systems
A telephone channel requires a bandwidth of about

3 kHz
50 kHz
10 kHz
1 kHz

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

Very high frequency
Medium frequency
Low frequency
High frequency

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Communication Systems
In TV systems, equalising pulses are sent during

Horizontal blanking
Horizontal retrace
Serrations
Vertical blanking

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Communication Systems
The modulation index of an FM is changed from 0 to 1. How does the transmitted power change?

Gets doubled
Remains unchanged
Gets halved
Gets increased by 50 percent

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Communication Systems
For attenuation of high frequencies we should use

Resistance
Series capacitance
Inductance
Shunt capacitance

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Communication Systems
A cordless telephone using separate frequencies for transmission in base and portable units is known as

Half duplex arrangement
Neither A nor B
Duplex arrangement
Either A or B

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MORE MCQ ON Communication Systems

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