Analog Modulation in Communications Quiz
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Questions and Answers

What type of modulation does not change a sinusoidal signal?

  • Pulse Modulation (correct)
  • Continuous Wave Modulation
  • Double-Sideband, Large Carrier (AM/DSB-LC)
  • Analog Modulation

    • Which characteristic(s) of the carrier wave are changed in Analog Modulation?

  • Amplitude only
  • Frequency only
  • Amplitude, frequency, or phase (correct)
  • Phase only

    • Which of the following is NOT a type of Continuous Wave Modulation?

  • AM
  • PAM (correct)
  • FM
  • PM

    • In Double-Sideband, Large Carrier (AM/DSB-LC) modulation, which characteristic(s) of the carrier signal change?

    <p>Amplitude only</p> Signup and view all the answers

    What is the purpose of modulation in communication systems?

    <p>To increase the efficiency of radiation</p> Signup and view all the answers

    Which of the following is NOT a type of Analog Modulation?

    <p>Pulse Amplitude Modulation (PAM)</p> Signup and view all the answers

    What is the definition of the modulation index?

    <p>The ratio of the amplitude of the message signal to the amplitude of the carrier signal</p> Signup and view all the answers

    Which of the following is another name for the modulating signal?

    <p>Baseband signal</p> Signup and view all the answers

    Which of the following is not a type of single-sideband modulation?

    <p>Vestigial-sideband (AM/VSB)</p> Signup and view all the answers

    What is the primary purpose of modulation in communication systems?

    <p>To reduce noise and interference</p> Signup and view all the answers

    Which of the following best represents the envelope of the modulated carrier in Amplitude Modulation (AM)?

    <p>A(t)</p> Signup and view all the answers

    What does AM/DSB-SC stand for?

    <p>Amplitude Modulation with Double-Sideband and Suppressed Carrier</p> Signup and view all the answers

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