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Instructional Technology
4th
grade
Electrical Symbols and Their Functions
10 questions
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- 1. Multiple Choice
1. It is used as a source of power.
battery
conductor
diode
circuit breaker
- 2. Multiple Choice
2. It is a device for making and breaking the connection In an electric circuit.
circuit breaker
fuse
switch
terminal
- 3. Multiple Choice
3. It emits light when heated by electricity.
conductor
incandescent lamp
switch
battery
- 4. Multiple Choice
4. It is an output device used with computer systems.
battery
speaker
push button
antenna
- 5. Multiple Choice
5. It is used for measuring electric current in amperes.
Ammeter
Galvanometer
voltmeter
wattmeter
- 6. Multiple Choice
6. It is used for measuring electric potential in volts.
Ammeter
Galvanometer
voltmeter
wattmeter
- 7. Multiple Choice
7. It allows the flow of current in one direction only.
Capacitor
Lightning Arrester
Male Plug
Diode
- 8. Multiple Choice
8. It stops the flow of current in an electric circuit as a safety measure.
circuit breaker
fuse
switch
conductor
- 9. Multiple Choice
9. It detects and measures small electric currents.
Ammeter
Galvanometer
voltmeter
wattmeter
- 10. Multiple Choice
10. It permits the flow of electric charges in one or more directions.
ammeter
galvanometer
voltmeter
conductor
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