Electrical Projects - Doorbell Circuit - JSS1 Basic technology Past Questions and Answers - page 2
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
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
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
How is the voltage typically supplied to a doorbell circuit?
High-voltage AC
Low-voltage AC
High-voltage DC
Low-voltage DC
What is the primary application of a doorbell circuit?
Controlling lighting systems
Activating lighting systems
Producing a ringing sound
Regulating heating systems
What is the purpose of a doorbell circuit?
The purpose of a doorbell circuit is to produce a ringing sound when activated by a push-button switch, alerting occupants of visitors at the door. It serves as a convenient and effective means of communication between visitors and occupants, enhancing security and convenience.
Which component completes the circuit in a doorbell circuit when pressed?
The push-button switch completes the circuit in a doorbell circuit when pressed. When the switch is pressed, it allows current to flow through the circuit, activating the bell or buzzer and producing the ringing sound.
What is the function of the transformer in a doorbell circuit?
The transformer in a doorbell circuit steps down the voltage from the power source to a lower voltage suitable for the doorbell operation. This ensures safe and efficient operation of the circuit, while also providing isolation between the power source and the doorbell components.
Where is the push-button switch typically installed in a doorbell circuit?
The push-button switch is typically installed near the door, allowing visitors to easily activate the doorbell when they arrive. Placing the switch near the door ensures convenience and accessibility for both visitors and occupants.
What happens when the push-button switch is pressed in a doorbell circuit?
When the push-button switch is pressed in a doorbell circuit, it completes the circuit, allowing current to flow through the transformer and activate the bell or buzzer. This action produces the ringing sound, alerting occupants of visitors at the door.