Multiple Choice
Air blast circuit breaker is used for
A) over currents
B) short duty
C) intermittant duty
D) repeated duty
Correct Answer:
Verified
Correct Answer:
Verified
Q5: In order that current should flow without
Q6: Directional relays are based on flow of<br>A)power<br>B)current<br>C)voltage
Q7: D.C. shunt relays are made of<br>A)few turns
Q8: The main function of a fuse is
Q9: The current zero interruption, in oil and
Q11: Circuit breakers are essentially<br>A)current carrying contacts called
Q12: Fault diverters are basically<br>A)fuses<br>B)relays<br>C)fast switches<br>D)circuit breakers
Q13: The relay operating speed depends upon<br>A)the spring
Q14: Circuit breakers usually operate under<br>A)transient state of
Q15: Thermal circuit breaker has<br>A)delayed trip action<br>B)instantaneous trip