A carrier wave of peak voltage 15 V is used to transmit a message signal. What should be the peak voltage of the modulating signal in order to have a modulation index of 80 % ?

Question

A carrier wave of peak voltage 15 V is used to transmit a message signal. What should be the peak voltage of the modulating signal in order to have a modulation index of 80 % ?, 8 V, 10 V, 11 V, 12 V

MARKS App · Accepted Answer

Modulation index is given by, m = A m A C ⇒ 0 . 80 = A m 15 ⇒ A m = 0 . 80 × 15 = 12 V

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