0 of 24 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:
0 of 24 Questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Q1 – Switchgear can be divided into two groups. Name them
This response will be reviewed and graded after submission.
Q2 – Name THREE devices that can be used for overload protection and electric shock
This response will be reviewed and graded after submission.
Q3 – Name THREE types of switchgear that can be used for isolation purposes.
This response will be reviewed and graded after submission.
Q4 – Discuss what is meant by protection with reference to switchgear
This response will be reviewed and graded after submission.
Q5 – Discuss the function of the control component of switchgear
This response will be reviewed and graded after submission.
Q6 – Briefly describe what a relay is.
This response will be reviewed and graded after submission.
Q7 – Briefly describe the differences, with regard to the operational features, of a disconnector, a relay and a contactor.
This response will be reviewed and graded after submission.
Q8 – Briefly describe the constructional differences between a disconnector, a relay and a contactor.
This response will be reviewed and graded after submission.
Q9 – Briefly explain how a relay operates.
This response will be reviewed and graded after submission.
Q10 – Discuss what a day-night switch is.
This response will be reviewed and graded after submission.
Q11 – Give TWO examples of the use of a relay in practice.
This response will be reviewed and graded after submission.
Q12 – Timers are divided into two types. Name them.
This response will be reviewed and graded after submission.
Q13 – Briefly explain what an on-delay timer is.
This response will be reviewed and graded after submission.
Q14 – Give ONE example of the use of timers in practice.
This response will be reviewed and graded after submission.
Q15 – Briefly describe what a contactor is.
This response will be reviewed and graded after submission.
Q16 – Name THREE advantages that HRC fuses have over rewireable fuses. Advantages of HRC fuses:
This response will be reviewed and graded after submission.
Q17 – Name FOUR disadvantages of rewirable type fuses.
This response will be reviewed and graded after submission.
Q18 – What is meant by a voltage surge? How would you define a varistor?
This response will be reviewed and graded after submission.
Q19 – Show how a surge arrestor can be connected in the distribution board of a single phase installation.
Upload your answer to this question.
This response will be reviewed and graded after submission.
Q20 – Explain each of the ratings of a fuse.
This response will be reviewed and graded after submission.
Q21 – Explain the purpose of a fuse.
This response will be reviewed and graded after submission.
Q22 – What does HRC stand for?
This response will be reviewed and graded after submission.
Q23 – What is the purpose of an earth-leakage protection units
This response will be reviewed and graded after submission.
Q24 – With the aid of a simple diagram, explain the operation of a core balance earth leakage relay
This response will be reviewed and graded after submission.