Question

A modulating signal is a square wave as shown in figure. The carrier wave is given by c(t) = 2sin(8$\pi$t) volt. What is the modulation index?

• A. 0.2
• B. 0.3
• C. 0.4
• D. 0.5

Answer 1

Answer: (D)

0.5

Answer 2

: Here $A_{m} = 1V,A_{c} = 2V$

Modulation index $\mu = \frac{A_{m}}{A_{c}} = \frac{1}{2} = 0.5$