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Acceptor Circuit

In the given ...

Question

In the given figure A.M. modulation block diagram is shown. from the figure A and B respectively are:

Mixer and R. F. Power Amplifier

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Buffer Amplifier and Audio Amplifier

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Audio Amplifier and Mixer

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Audio Amplifier and R. F. Power Amplifier

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Solution

The correct option is D Audio Amplifier and R. F. Power Amplifier
(A) = Audio amplifier = It is called audio amplifier .It is used after microphone because it will amplify the signal to a perfect strength , from where it can be modulated by the amplitude modulator.
(b) = R.F Power Amplifier = It is used after modulation ,in the last step before transmission by antenna because the modulated signal should have enough power .So, that it can be transmitted to the desired place.

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C B

5 k Ω

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