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

In Frequency Modulation (FM), what remains constant?

<p>Amplitude of the carrier wave (B)</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 (D)</p> Signup and view all the answers

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

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

What limitation does modulation help overcome in a communication system?

<p>Antenna size limitations (C)</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 (A)</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 (D)</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 (C)</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 (B)</p> Signup and view all the answers

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

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

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