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Automatic gain control is useda.to maintain the same amount of output, when stations of different strength are receivedb.to increase the amplification at high frequenciesc.to maintain the tuning correctd.to reduce the voltage of loud passage of music

Question

Automatic gain control is useda.to maintain the same amount of output, when stations of different strength are receivedb.to increase the amplification at high frequenciesc.to maintain the tuning correctd.to reduce the voltage of loud passage of music

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Solution

Automatic gain control is used to maintain the same amount of output, when stations of different strength are received. This is because the strength of radio signals can vary greatly depending on the distance and location of the broadcasting station. Automatic gain control helps to ensure that the output remains consistent regardless of these variations.

It is not used to increase the amplification at high frequencies. This is a function of equalization, not automatic gain control.

Automatic gain control does not maintain the tuning correct. The tuning is controlled by the user and is not affected by the automatic gain control.

Lastly, automatic gain control is not used to reduce the voltage of loud passages of music. This is a function of a compressor or limiter, which reduces the dynamic range of audio signals to prevent distortion.

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