Q.

In a Circuit Breaker Contact wipe  is necessary 

  • ATo decrease the speed of opening of the CB
  • BTo increase the speed of opening and reduce the arcing of contacts
  • CTo increase the dielectric strength across the CB contacts
  • DNone of the above 
Correct Answer : (C)

To increase the dielectric strength across the CB contacts

Hints :

In a Circuit Breaker Contact wipe  is necessary To increase the dielectric strength across the CB contacts.

Previous

The most serious consequence of a major uncleared short-circuit fault could be

Next

Which of the following results in a symmetrical fault?

Join The Discussion