engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Electrician and Wireman Power Systems Circuit Breakers
Select the incorrect statement from the following regarding to the air-blast circuit breaker.
1
It requires less maintenance.
2
It is used when a frequent operation is required due to low arc energy.
3
The time duration of the arc is not the same for different values of current.
4
Arc quenching is more rapid.