Question

If modulation index is $1/2$ and power of carrier wave is $2$ units, then what will be the total power of side band:

• A. $0.5$
• B. $1.5$
• C. $2.25$
• D. $0.75$

Answer 1

The correct option is C $2.25$

$P_m=P_c(1+\frac{m^2}{2})$
$\therefore P_m=2(1+\frac{1}{8})$
$=2\times \frac{9}{8}=\frac{9}{4}=2.25W$