Signal Communication
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Questions and Answers

Which of the following is an example of a simple signal?

  • Telephone
  • Morse code
  • Telegraph
  • Doorbell (correct)

    • What is the purpose of Morse code?

  • To send messages using telegraph machines
  • To complete an electric circuit
  • To represent letters of the alphabet (correct)
  • To convert sound waves into electronic signals

    • How did the first telephone work?

  • By completing an electric circuit
  • By converting sound waves into electronic signals
  • By sending messages using telegraph machines
  • By using electronic signals (correct)

    • What is the purpose of a telegraph?

    <p>To send messages using telegraph lines</p> Signup and view all the answers

    What is the role of a microphone in a telephone?

    <p>To convert sound waves into electronic signals</p> Signup and view all the answers

    Which of the following is an example of a complex signal?

    <p>Morse code</p> Signup and view all the answers

    What type of information do electronic signals send?

    <p>Pattern in a flow of current</p> Signup and view all the answers

    When was Morse code used to send messages across the entire country?

    <p>During the Civil War</p> Signup and view all the answers

    What are short pulses called in Morse code?

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

    What happens when someone pushes the button of a doorbell?

    <p>The circuit is complete</p> Signup and view all the answers

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