SUBSTATION AND EQUIPMENT - Quiz

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

Air circuit breaker Oil circuit breaker Lightning arrester Isolator

2) 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

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

Nitrogen Oxygen Hydrogen SF6

4) Which circuit breaker has the lowest voltage range?

Air-break circuit breaker Oil circuit breaker Vacuum circuit breaker SF6 circuit breaker

5) Which is the purpose of circuit breaker?

To monitor over voltage Protection and control Protection and monitor heat Monitor under voltage