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A carrier wave of peak voltage 14 V is used for transmitting a message signal. The peak voltage of the modulating signal given to achieve a modulation index of 80 % will be:

Options

  1. A22 .4   V
  2. B7   V
  3. C11 .2   V
  4. D28   V

Correct answer

C. 11 .2   V

Step-by-step solution

Modulation index, m = A m A c ⇒ A m = 0.8   × 14 = 11 .2   V

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