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 A_m to A_c is kept less than or equal to one, to avoid ______.

Options

• distortion

• attenuation

• fading

• noise

Answer 1

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 A_m to A_c is kept less than or equal to one, to avoid distortion.

Explanation:

Modulation index, `mu = "A"_"m"/"A"_"c" <= 1` is carried by the Ac carrier wave, i.e. there is no signal distortion.