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Communication Systems

Communication Systems
A woofer should be fed from the input through a

High pass filter
Band pass filter
Band stop filter
Low pass filter

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Communication Systems
In case of low level amplitude modulation system, the amplifiers following the modulated stage must be

Harmonic devices
Non-linear devices
Linear devices
Class C amplifiers

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

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Communication Systems
In TV systems, equalising pulses are sent during

Serrations
Horizontal blanking
Horizontal retrace
Vertical blanking

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Communication Systems
For AM receivers the standard IF frequency is

1.07 MHz
106 kHz
10.7 MHz
455 kHz

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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.

10
995
5
4.9

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