engineering recuitment NMDC Junior Officer (Trainee) Mock Test 2024 Electrician and Wireman Power Systems Circuit Breakers
What is the effect of blast of SF6 gas in sulphur hexafluoride circuit breaker?
1
It decreases the dielectric strength of the medium
2
It increases the strength of the arc
3
It reduces the temperature of the arc
4
It increases the temperature of the arc