Question

A sinusoidal voltage amplitude modulates another sinusoidal voltage of amplitude 2 kV resulting in two side bands of amplitude 200 V. Find the modulation index.
A. 0.2
B. 0.3
C. 0.4
D. 0.5

Answer 1

Correct Answer - A
Amplitude of each sideband `=(muA_(c))/(2)`
`therefore 200 V=(muxx2kV)/(2)=(muxx2000V)/(2)` or `mu=(2xx200)/(2000)=0.2`