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Question
The maximum amplitude of an A.M. 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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Solution
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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