Question:
The amplitude of upper and lower side bands of A.M. wave where a carrier signal with frequency $11.21 \mathrm{MHz}$, peak voltage $15 \mathrm{~V}$ is amplitude modulated by a $7.7 \mathrm{kHz}$ sine wave of $5 \mathrm{~V}$ amplitude
are $\frac{\mathrm{a}}{10} \mathrm{~V}$ and $\frac{\mathrm{b}}{10} \mathrm{~V}$ respectively. Then the value of $\frac{\mathrm{a}}{\mathrm{b}}$ is____________
Solution:
$\frac{\mathrm{a}}{10}=\frac{\mathrm{b}}{10}=\frac{\mu \mathrm{A}_{\mathrm{C}}}{2}$
$\Rightarrow \frac{\mathrm{a}}{\mathrm{b}}=1$