(a) What is amplitude modulation? Draw a diagram showing an
amplitude modulated wave obtained by modulation of a carrier
sinusoidal wave on a modulating signal.
(b)Define the terms(i) modulation index,and (ii) sidebands.Mention
the significance of sidebands.
(a) Amplitude Modulation:- It is a modulation technique
used in electronic communication, mostly for transmitting the
information with a radio carrier wave.
The amplitude of carriers is varied in accordance with the information signal.
(b) Modulation index:-
hence,
(ii)