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Oscillations

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Question

The amplitude of modulating wave is 2/5th of the amplitude of the carrier wave. The percentage of modulation is

A

20

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B

40

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C

50

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D

60

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Solution

The correct option is B 40
We are given the ratio of the amplitude of signals and amplitude of carrier waves = 2/5=0.4. Thus, the percentage of modulation is 0.4X100 = 40%

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