In amplitude modulation, the modulation index mu, is kept less than or equal to 1 because.

Options

A. `mgt1`, will result in interference between carrier frequency and message frequency, resulting into distortion.
B. `mgt1` will result in overlapping of both side bands resulting into loss of information.
C. `mgt1` will result in change in phase between carrier signal and message signal.
D. `mgt1` indicates amplitude of message signal greater than amplitude of carrier signal resulting into distortion.

Answer

B, D

Explanation

Here `mu=(A_(m))/(A_(c))`
when `mgt1` overlapping of both side bands takes place and it results loss of information and alos amplitude of message signal will be greater than amplitude or carrier signal which results destortion.