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What is the full form of AGC?

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What is the full form of AGC?

(a) Automatic Gain Control

(b) Audio Gain Control

(c) Automatic Gain Conversion

(d) Active Gain Control

This question was addressed to me at a job interview.

My question is from Multitone Wideband FM topic in division Angle Modulation of Analog Communications

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The correct choice is (a) Automatic Gain Control

The explanation: AGC stands for Automatic Gain Control. It is closed loop feedback regulating circuit. Its purpose is to provide a controlled signal amplitude at its output, irrespective of changes in it’s input signal amplitude.

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