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AP EAMCET20226 Jul 2022Evening ShiftPhysicsCommunication SystemActual

The maximum amplitude of an AM wave is found to be 20 ~V while its minimum amplitude is 4 ~V . The modulation index is

Options

  1. A0.33
  2. B0.67
  3. C0.44
  4. D0.63

Correct answer

B. 0.67

Step-by-step solution

Maximum amplitude of AM wave, A_ =20 ~V and minimum amplitude of AM wave, A_ =4 ~V Modulation index, aligned & = A_ -A_ A_ +A_ & = 20-4 20+4 = 16 24 = 2 3 =0.67 aligned

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