Q.The making to breaking current ratio  for an EHV  circuit breaker is 

  • AMore than 1.
  • BEqual to 1.
  • CLess than 1.
  • DA negative number
Correct Answer : (A)

More than 1.

Hints :

The making to breaking current ratio  for an Extra High Voltage  circuit breaker is More than 1.


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


Which of the following results in a symmetrical fault?

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