The breaking capacity of a circuit breaker in MVA (3 phase) is given by
A) Rated service voltage x rated symmetrical current
B) 1.1 x rated service voltage x rated symmetrical current
C) (2) 1/2 x rated service voltage x rated symmetrical current
D) (3) 1/2x rated service voltage x rated symmetrical current.
Correct Answer:
Verified
Q4: the most efficient torque producing actuating structure
Q5: If the power factor is zero, the
Q6: Which of the following is not a
Q7: Which of the following circuit breaker will
Q8: For a circuit breaker 'break time' is
A)Same
Q10: Which relay is used for feeders?
A)MHO relay
B)Translay
Q11: Which of the following relays is used
Q12: MHO relay is used for
A)Rectifiers
B)Circuit breakers
C)Transmission lines
D)Feeders.
Q13: Merz-price protection is used on
A)Substations
B)Capacitor bank
C)Induction motor
D)Generators.
Q14: The values of fault current depend on
A)Voltage
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