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Wireman Set-1
Substation and equipment
16

Substation and equipment MCQ with Answers

16) What is the name of device used for protection against lightning in over head line?

Air circuit breaker

Oil circuit breaker

Lightning arrester

Isolator

Answer is:

Lightning arrester

Substation and equipment MCQ with Answers

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Related Substation and equipment MCQ with Answers

17) Which is the function of a lightning arrester?

Protection from over current

Protection from leakage current

Protection from lower current

Protection from over voltage due to lightning

Answer is:

Protection from over voltage due to lightning

18) Which gas is used as insulator in circuit breaker?

Nitrogen

Oxygen

Hydrogen

SF6

Answer is:

SF6

19) Which circuit breaker has the lowest voltage range?

Air-break circuit breaker

Oil circuit breaker

Vacuum circuit breaker

SF6 circuit breaker

Answer is:

Air-break circuit breaker

20) Which is the purpose of circuit breaker?

To monitor over voltage

Protection and control

Protection and monitor heat

Monitor under voltage

Answer is:

Protection and control

Substation and equipment MCQ with Answers

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