Substation and equipment MCQ with Answers

Substation and equipment MCQ with Answers

6) Which is circuit breaker is best suited for capacitor bank switching?

Answer is:

Vacuum circuit breaker

7) Which part of the circuit breaker is helpful in breaking the circuit?

Answer is:

Trip coil

8) What is the full form of ACB?

Answer is:

Air circuit breaker

9) What is the medium of arc quenching in an air circuit breaker?

Answer is:

Air

10) How circuit breakers arc rated?

Answer is:

MVA

Explanation:

Rupturing capacity of a circuit breaker means the maximum power a circuit breaker can interrupt under a fault. It is usually expressed in Mega volt Ampere (MVA) and it is then the product of the rated breaking current in kilo amperes and rated voltage expressed in kilo volts.