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Wireman Set-1
Substation and equipment
15

Substation and equipment MCQ with Answers

15) Which is the use of lighting arrester in HT line?

Protect the transformers from surge

For short circuit protection

For open circuit protection

For leakage protection

Answer is:

Protect the transformers from surge

Substation and equipment MCQ with Answers

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Related 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

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

Substation and equipment MCQ with Answers

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