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Which of the following modulating signal voltage would cause over-modulation on a carrier voltage of 10v?

Which of the following modulating signal voltage would cause over-modulation on a carrier voltage of 10v? Correct Answer 12

When the voltage of the modulating signal exceeds the voltage of the carrier signal over-modulating occurs. Here, 12/10 = 1.2 which is greater than 1 and hence would cause over-modulation.

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