Electrical Safety – OnlineTuition.com.my

Quiz Summary

0 of 8 Questions completed

Questions:

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading…

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

0 of 8 Questions answered correctly

Your time:

You have reached 0 of 0 point(s), (0)

maximum of 8 points
Pos.	Name	Entered on	Points	Result
Table is loading
No data available

Current
Review
Answered
Correct
Incorrect

Question 1 of 8

1. Question
1 point(s)
An electric heater has a label stating this information: 240″ ” V,2400″ ” W,10″ ” A. What is written on a fuse with a rating that is appropriate for use with this heater?
- A 5″ ” A
- B 13″ ” A
- C 230″ ” V
- D 250″ ” V
Correct

Incorrect
Question 2 of 8

2. Question
1 point(s)
An electrical appliance with a resistance of 600Ω is connected to a 240″ ” V supply. Which fuse rating is appropriate to protect the appliance and the wires from overheating if a fault occurs?
- A □( ) 0.04″ ” A
- B □( ) 0.5″ ” A
- C 5″ ” A
- D 13″ ” A
Correct

Incorrect
Question 3 of 8

3. Question
1 point(s)
Why is the electricity supply to a mains circuit fitted with a fuse?
- A to increase the current in the circuit
- B to increase the resistance of the circuit
- C to maintain a constant current in the circuit
- D to prevent overheating of the cables in the circuit
Correct

Incorrect
Question 4 of 8

4. Question
1 point(s)
What is the purpose of a fuse in an electric circuit?
- A It acts as an extra resistor in the circuit.
- B It keeps the current at a steady value.
- C It keeps the voltage at a steady value.
- D It protects the circuit from a current that is too large.
Correct

Incorrect
Question 5 of 8

5. Question
1 point(s)
The diagram shows a circuit with four labelled components. One component breaks the circuit automatically when the current becomes too large. Which component does this?
- A
- B
- C
- D
Correct

Incorrect
Question 6 of 8

6. Question
1 point(s)
An air conditioner and a television are both connected to the same electrical circuit. The current in the air conditioner is 9.0″ ” A and the current in the television is 2.0″ ” A. Several different fuses are available. Which fuse should be connected at X?
- A 1″ ” A
- B 3″ ” A
- C 7″ ” A
- D 13″ ” A
Correct

Incorrect
Question 7 of 8

7. Question
1 point(s)
The charger for a laptop computer is connected by a cable to the mains supply through a plug. The plug contains a 13″ ” A fuse. The cable is designed to carry a current of 2″ ” A. A fault develops and the current in the cable increases to 5″ ” A. What is a possible danger caused by this larger current?
- A A large amount of electrical energy is wasted.
- B Somebody receives an electric shock.
- C The fuse blows and starts a fire.
- D The cable overheats and starts a fire.
Correct

Incorrect
Question 8 of 8

8. Question
1 point(s)
A mains circuit can safely supply a current of up to 40″ ” A. The current in a hairdryer is 2″ ” A when it is operating normally. The hairdryer is connected to the mains by a lead which can safely carry up to 5″ ” A. What is the correct fuse to protect the hairdryer?
- A 1″ ” A fuse
- B 3 A fuse
- C 10″ ” A fuse
- D 50″ ” A fuse
Correct

Incorrect

Quiz Summary

Information

Results

Results

Categories

1. Question

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question