Arc in a circuit behaves as
A) a capackive reactance
B) an inductive reactance
C) a resistance increasing with voltage rise across the arc
D) a resistance decreasing with voltage rise across the arc
Correct Answer:
Verified
Q4: The arcing contacts in a circuit breaker
Q5: Which of the following medium is employed
Q6: With which of the following, a circuit
Q7: Fault diverters are basically
A)fuses
B)relays
C)fast switches
D)circuit breakers
Q8: A thermal protection switch can protect against
A)short-circuit
B)temperature
C)overload
D)over
Q10: Thermal circuit breaker has
A)delayed trip action
B)instantaneous trip
Q11: Thermal overload relays are used to protect
Q12: Magnetic circuit breaker has _ trip action.
A)delayed
B)instantaneous
C)both
Q13: D.C. shunt relays are made of
A)few turns
Q14: The relay operating speed depends upon
A)the spring
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