Magnetic circuit breaker has ______ trip action.
A) delayed
B) instantaneous
C) both of the above
D) none of the above
Correct Answer:
Verified
Q9: Arc in a circuit behaves as
A)a capackive
Q10: Thermal circuit breaker has
A)delayed trip action
B)instantaneous trip
Q11: Relays can be designed to respond to
Q12: Overload relays are of…… type.
A)induction
B)solid state
C)thermal
D)all above
Q13: Thermal overload relays are used to protect
Q15: D.C. shunt relays are made of
A)few turns
Q16: The relay operating speed depends upon
A)the spring
Q17: In order that current should flow without
Q18: Circuit breakers usually operate under
A)transient state of
Q19: Circuit breakers are essentially
A)current carrying contacts called
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