Amplitude modulation is

Q.  Amplitude modulation is
- Published on 12 Oct 15

a. Change in amplitude of the carrier according to modulating signal
b. Change in frequency of the carrier according to modulating signal
c. Change in amplitude of the modulating signal according to carrier signal
d. Change in amplitude of the carrier according to modulating signal frequency

ANSWER: Change in amplitude of the carrier according to modulating signal
 
Amplitude modulation is defined as change in the amplitude of the high frequency carrier wave in accordance with the instantaneous value of the modulating signal.

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