Discussion Forum



1)

In amplitude  modulation, the amplitude of carrier wave is  Ac and that of the modulating signal is Am . In practice, the ratio of Am to Ac is kept less than or equal to one , to avoid


A) distortion

B) attenuation

C) fading

D) noise

Answer:

Option A

Explanation:

Modulation index,  $\mu_{}=\frac{A_{m}}{A_{c}} \leq1$ is carried by the carrier wave, i.e, there is no signal distortion