# F.M., A.M. and S.S.B. transmitters

### Explanation of question 7

In amplitude modulation, the amplitude of the modulated carrier wave varies in sympathy with the

1. amplitude of the modulating signal
2. amplitude of the carrier
3. frequency of the modulating signal
4. frequency of the carrier

The answer is :- 1 The modulation envelope of the amplitude-modulated carrier wave varies as the amplitude of the modulating signal.

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