Question

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

• A. distortion
• B. attenuation
• C. fading
• D. noise

Answer 1

Answer: (A)

distortion

Answer 2

Modulation index, $\mu=\frac{A_{m}}{A_{c}} \leq 1$ is carried by the carrier wave, i.e. there is no signal distortion.