ELECTRICIAN 2nd YEAR MODULE – Circuit Breakers and Relays ONLINE TEST

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Question 1 of 15

1. Which circuit breaker is used as a switch and protective device in the domestic wiring circuit?

Question 1 of 15

Question 2 of 15

2. How the rupturing capacity of circuit breaker is rated?

Question 2 of 15

Question 3 of 15

3. What is the function of Buchholz relay in power transformer?

Question 3 of 15

Question 4 of 15

4. What is the defect in a oil circuit breaker if the oil heats up excessively?

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Question 5 of 15

5. Which type of load is protected by 'G' series MCB?

Question 5 of 15

Question 6 of 15

6. What is the function of relay to the breaking operation of circuit breaker in control circuit?

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Question 7 of 15

7. What is the name of circuit breaker?

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Question 8 of 15

8. Which circuit breaker is installed along with wiring circuit against leakage current protection?

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Question 9 of 15

9. What is the pick-up voltage in a over voltage relay indicated?

Question 9 of 15

Question 10 of 15

10. Which type of relay is used in both A.C and D.C supply?

Question 10 of 15

Question 11 of 15

11. Which relay hold their contacts in position after power is cutoff?

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Question 12 of 15

12. What is the defect in an air circuit breaker, if trips intermittently on loading?

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Question 13 of 15

13. What is the effect, if the test button marked as 'X' is closed permanently in ELCB?

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Question 14 of 15

14. What is the purpose of trip coil used in circuit breakers?

Question 14 of 15

Question 15 of 15

15. What is the cause for the defect if phase to ground fault on the transmission line?

Question 15 of 15


 

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