Q.Rated breaking capacity (MVA)  of a circuit breaker is equal to 

  • AThe product of rated breaking current (kA) and rated voltage (kV).
  • BThe product of rated symmetrical breaking current (kA) and rated voltage (kV).
  • CThe product of breaking current (kA) and fault voltage (kV).
  • DTwice the value of rated current (kA) and rated voltage (kV).
Correct Answer : (B)

The product of rated symmetrical breaking current (kA) and rated voltage (kV).

Hints :

Rated breaking capacity (MVA)  of a circuit breaker is equal to The product of rated symmetrical breaking current (kA) and rated voltage (kV).

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