Electrical Projects - Doorbell Circuit - JSS1 Basic technology Past Questions and Answers - page 1
What is the focus of this week?
Lighting systems
Security Cameras
Doorbell circuit
Heating systems
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What is the purpose of a doorbell circuit?
To control lighting systems
To activate security cameras
To produce a ringing sound
To regulate heating systems
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Which component completes the circuit in a doorbell circuit when pressed?
Transformer
Bell or buzzer
Power source
Push-Button switch
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What is the function of the transformer in a doorbell circuit?
To produce a ringing sound
To complete the circuit
To step down the voltage
To activate the bell or buzzer
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Where is the push-button switch typically installed in a doorbell circuit?
Near the power source
Near the bell or buzzer
Near the door
Near the transformer
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What happens when the push-button switch is pressed in a doorbell circuit?
The circuit is disconnected
The circuit is completed
The voltage is increased
The transformer is deactivated
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What role does the bell or buzzer play in a doorbell circuit?
Completes the circuit
Steps down the voltage
Produces the ringing sound
Activates the Push-Button switch
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How is the voltage typically supplied to a doorbell circuit?
High-voltage AC
Low-voltage AC
High-voltage DC
Low-voltage DC
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What is the primary application of a doorbell circuit?
Controlling lighting systems
Activating security cameras
Producing a ringing sound
Regulating heating systems
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Which component of the doorbell circuit steps down the voltage?
Bell or buzzer
Push-Button switch
Transformer
Power source
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