Mastering AM Modulation
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Questions and Answers

Find the peak amplitude of the upper and lower side frequency voltages.

  • 20 V
  • 3.75 V
  • 7.5 V (correct)
  • 27.5 V
  • Find the maximum and minimum amplitudes of the envelope.

  • 27.5 V and 7.5 V
  • 20 V and 7.5 V
  • 27.5 V and 12.5 V (correct)
  • 7.5 V and 3.75 V
  • What is the expression for the modulation wave?

  • $Vam(t)=20sin(2π510kHzt)-3.75 cos(2π510kHzt)+3.75 cos(2π490kHzt)$
  • $Vam(t)=20sin(2π500kHzt)-3.75 cos(2π510kHzt)+3.75 cos(2π490kHzt)$ (correct)
  • $Vam(t)=20sin(2π510kHzt)-7.5 cos(2π510kHzt)+7.5cos(2π490kHzt)$
  • $Vam(t)=20sin(2π500kHzt)-3.75 cos(2π490kHzt)+3.75 cos(2π510kHzt)$
  • What is the frequency of the carrier signal?

    <p>500 kHz</p> Signup and view all the answers

    What is the frequency of the modulating signal?

    <p>10 kHz</p> Signup and view all the answers

    What is the total coefficient of modulation for the given AM DSBFC transmitter?

    <p>0.76</p> Signup and view all the answers

    What is the total sideband power for the given AM DSBFC transmitter?

    <p>22.5 W</p> Signup and view all the answers

    What is the total transmitted power for the given AM DSBFC transmitter?

    <p>122.445 W</p> Signup and view all the answers

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