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The maximum amplitude of an AM wave is f...

The maximum amplitude of an AM wave is found to be 15 V while its minimum amplitude is found to be 3 V.What is the modulation index?

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The correct Answer is:
B, C
Modulation index `mu`,
`=(A_(max) - A_(min))/(A_(max)+ A_(min)`
(A = amplitude of modulated wave)
`:. mu=(15-3)/(15+3)=(12)/(18)=2/3`.
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