The amplitude of an AF signal is 10 and that of the carrier wave is 50 Percentagemodulation is

A: If the amplitude of a message signal is half of the amplitude of the carrier wave, then the index of modulation is 50%. R: In amplitude modulation the amplitude of the carrier wave varies in accordance with the signal voltage of the message signal.

If A_m and A_c are the amplitudes of modulating signal and carrier wave respectively, then modulation index is given by

If A_m and A_c are the amplitudes of modulating signal and carrier wave respectively, then modulation index is given by

Why is the amplitude of modulating signal kept less than the amplitude of carrier wave?

Why is the amplitude of modulating signal kept less than the amplitude of carrier wave ?

Both amplitude modulation (AM) and frequency modulation (FM) are used for radio broadcasting. The amplitude of the high frequency carrier wave is varied or modulated in accordance with the variations in the amplitude of the audio signals that are to be transmitted, in te process of amplitude modulation in frequency modulation te amplitude of the carrier remains constant but its frequency is varied inn accordance withh the audio signal. Reception with AM signals is in general is affected by interference of various kinds ad elaborated equipment is required for FM broadcast. A radio frequency carrier wave can be modulated using a-