Question

If an amplitude modulation (AM) has an amplitude modulating signal of 0.5 V and carrier amplitude of 1.3 V, what is the modulation index?

Answer 1

Answer:

The modulation index in the amplitude modulation will be 0.384

Explanation:

We have given amplitude of adulating signal $A_m=0.5volt$

Amplitude of carrier signal $A_C=1.3volt$

We have to find modulation index

Modulation index is the ratio of amplitude of modulating signal and amplitude of carrier signal

So modulation index $m=\frac{A_m}{A_c}=\frac{0.5}{1.3}=0.384$

So the modulation index in the amplitude modulation will be 0.384