A modulating signal is a square wave as shown in the following figure .

While the carries wave is given by `e=4 sin (8 pi t)` volt . What is the modulation index ?

Options

A. 0.15
B. 0.25
C. 0.35
D. 10.5

Answer

B

Explanation

The amplitude of the modulating signal =1V
The amplitude of carries wave =4V
Thus , `A_(m)=1V and A_(c)=4V `
`:. mu=(A_(m))/(A_(c))=(1)/(4)=0.25`