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Questions and Answers
Which of the following is an example of a simple signal?
Which of the following is an example of a simple signal?
- Telephone
- Morse code
- Telegraph
- Doorbell (correct)
What is the purpose of Morse code?
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?
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?
What is the purpose of a telegraph?
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What is the role of a microphone in a telephone?
What is the role of a microphone in a telephone?
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Which of the following is an example of a complex signal?
Which of the following is an example of a complex signal?
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What type of information do electronic signals send?
What type of information do electronic signals send?
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When was Morse code used to send messages across the entire country?
When was Morse code used to send messages across the entire country?
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What are short pulses called in Morse code?
What are short pulses called in Morse code?
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What happens when someone pushes the button of a doorbell?
What happens when someone pushes the button of a doorbell?
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