Multiple Choice
The relay operating speed depends upon
A) the spring tension
B) the rate of flux built up
C) armature core air gap
D) all of the above
Correct Answer:
Verified
Correct Answer:
Verified
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
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
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
Q17: Magnetic circuit breaker has _ trip action.<br>A)delayed<br>B)instantaneous<br>C)both
Q18: A transmission line is protected by<br>A)inrush protection<br>B)distance