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Question

If Vc is amplitude of carrier wave in AM transmitter, where modulation factor is m, then amplitude of side bands can be

A
Vc2m
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B
mVc2
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C
mVc
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D
Vc2
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Solution

The correct option is B mVc2
Modulation factor is given as:
Modulation factor (m) = Amplitude of the modulated wave/Amplitude of the carrier wave = Vm/Vc
m=Vm/Vc
Therefore, Vm=mVc
So, amplitude of each side band = Vm/2=mVc/2.

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