30) The main disadvantage of ELCB is
Related Circuit Breakers MCQ - Electrician (Set-1) with Answers
mega volt ampere (MVA)
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.