Multiple Choice
Circuit breakers are essentially
A) current carrying contacts called electrodes
B) arc extinguishers
C) circuits to break the system
D) transformers to isolate the two systems
Correct Answer:
Verified
Correct Answer:
Verified
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
Q10: Air blast circuit breaker is used for<br>A)over
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
Q16: Which of the following medium is employed