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Q.

In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be 6V and 2V respectively. The modulation index is

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a

50%

b

60%

c

80%

d

100%

answer is D.

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Detailed Solution

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Modulation index=Vmax-VminVmax+Vmin×100%

=6-26+2×100%=50%

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In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitude are found to be 6V and 2V respectively. The modulation index is