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