Circuit components

Instructions:

For the 23 questions:

• choose the correct answer
• write down your answer.

Note:

• You can print this page and write you answers onto it.

1. The symbol shown in the graphic represents what electrical component?

The image shows two lines seperated by a gap. Between the gap is a third line at an angle to the other two lines. The left end of the third line is touching the end of the first line. Because of the angle the right hand end of the third line is seperated from the second line.

1. Power supply.
2. Fuse.
3. Load.
4. Capacitor.
5. Switch.

 

2. The symbol shown in the graphic represents what electrical component?

The image shows a filled circle over the top of a straight line. In side the circle is an upper case letter M.

1. Power supply.
2. Fuse.
3. Load.
4. Switch.
5. Circuit breaker.

 

3. The symbol shown in the graphic represents what electrical component?

The image shows a rectangle. There is a straight line through the middle of the length of the rectangle. The line extends beyond each end of the rectangle.

1. Fuse.
2. Battery.
3. Load.
4. Switch.
5. Circuit breaker.

 

4. The symbol shown in the graphic represents what electrical component?

 

1. Fuse.
2. Battery.
3. Load.
4. Switch.
5. Earth connection.

 

5. The symbol shown in the graphic represents what electrical component?

1. Circuit breaker.
2. Battery.
3. Load.
4. Switch.
5. Earth connection.

 

6. The symbol shown in the graphic represents what electrical component?

1. Circuit breaker.
2. Power supply.
3. Load.
4. Switch.
5. Earth connection.

 

7. The symbol shown in the graphic represents what electrical component?

1. Circuit breaker.
2. Power supply.
3. Load.
4. Switch.
5. Earth connection.

 

8. The symbol shown in the graphic represents what electrical component?

1. Circuit breaker.
2. Power supply.
3. Load.
4. Switch.
5. Earth connection.

 

9. The symbol shown in the graphic represents what electrical component?

1. Circuit breaker.
2. Power supply.
3. Load.
4. Switch.
5. Earth connection.

 

10. The symbol shown in the graphic represents what electrical component?

1. Circuit breaker.
2. Power supply.
3. Load.
4. Switch.
5. Earth connection.

 

11. What is the purpose of the pictured component in a circuit?

1. Provide illumination.
2. Control the flow of current .
3. Supply voltage.
4. Protect the circuit from excessive current flow.

 

12. What is the purpose of the pictured component in a circuit?

1. Provide illumination.
2. Control the flow of current .
3. Supply voltage.
4. Protect the circuit from excessive current flow.

 

13. What is the purpose of the pictured component in a circuit?

1. Provide illumination.
2. Control the flow of current .
3. Supply voltage.
4. Protect the circuit from excessive current flow.

 

14. What is the purpose of the pictured component in a circuit?

1. Provide illumination.
2. Control the flow of current.
3. Supply voltage.
4. Protect the circuit from excessive current flow.

 

15. What is the condition of the pictured circuit?

1. Open.
2. Closed.
3. Shorted.

 

16. What is the condition of the pictured circuit?

1. Open.
2. Closed.
3. Shorted.

 

17. What is the condition of the pictured circuit?

1. Open.
2. Closed.
3. Shorted.

 

18. What is the condition of the pictured circuit?

1. Open.
2. Closed.
3. Shorted.

 

19. What is the condition of the pictured circuit?

1. Open.
2. Closed.
3. Shorted.

 

20. How does a short circuit effect the total circuit resistance?

1. Decreases.
2. Stays the same.
3. Increases.

 

21. What component protects a circuit from the effects of a short circuit condition?

1. Load.
2. Fuse.
3. Switch.
4. Power supply.

 

22. How much current flows in a circuit when it is in an open condition?

1. None
2. The usual amount
3. More than usual

 

23. How much current flows in a circuit when it is in a shorted condition?

1. None.
2. The usual amount.
3. More than usual.

 

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