Basics of Communication Systems Lecture 1 Quiz
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Questions and Answers

What is the function of the input transducer in a communication system?

  • Converts the electric signal to a useable form
  • Converts electrical signal into a form suitable for the channel
  • Carries the information over a well-defined frequency band
  • Converts the source to an electric signal (correct)

    • What does the transmitter do in a communication system?

  • Converts the electric signal to a useable form
  • Converts the source to an electric signal
  • Carries the information over a well-defined frequency band
  • Converts electrical signal into a form suitable for the channel (correct)

    • What is the purpose of the output transducer in a communication system?

  • Converts electrical signal into a form suitable for the channel
  • Carries the information over a well-defined frequency band
  • Converts the source to an electric signal
  • Converts the electric signal to a useable form (correct)

    • What is the primary function of the modulator in a communication system?

    <p>To convert electrical signal into a form suitable for the channel</p> Signup and view all the answers

    What is the role of the frequency in a communication system?

    <p>Carries the information over a well-defined frequency band</p> Signup and view all the answers

    What is the main purpose of the amplifier in a communication system?

    <p>To boost the strength of the signal before transmission</p> Signup and view all the answers

    What is the purpose of modulation in a communication system?

    <p>To allow digital data to be carried on an analog signal</p> Signup and view all the answers

    In Frequency Modulation (FM), what remains constant?

    <p>Amplitude of the carrier wave</p> Signup and view all the answers

    What is the effect of linear distortion on a signal?

    <p>It may be corrected by the use of equalizers</p> Signup and view all the answers

    What type of signal does Amplitude Modulation (AM) carry?

    <p>Analog baseband signal</p> Signup and view all the answers

    What limitation does modulation help overcome in a communication system?

    <p>Antenna size limitations</p> Signup and view all the answers

    What is the primary function of a demodulator in a receiver?

    <p>To recreate the original message by demodulation</p> Signup and view all the answers

    What is a channel in a communication system?

    <p>A physical medium used to transfer signal from transmitter to receiver</p> Signup and view all the answers

    What is the main purpose of frequency modulation (FM)?

    <p>To vary the frequency of a carrier wave in proportion to the amplitude of a baseband signal</p> Signup and view all the answers

    How does modulation help in reducing noise and interference in a communication system?

    <p>By allowing digital data to be carried on an analog signal</p> Signup and view all the answers

    What is one method used to compensate for attenuation in a channel?

    <p>Amplification at the receiver</p> Signup and view all the answers

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