Multiple Choice
Thermal circuit breaker has
A) delayed trip action
B) instantaneous trip action
C) both of the above
D) none of the above
Correct Answer:

Verified
Correct Answer:
Verified
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
Q13: The relay operating speed depends upon<br>A)the spring
Q14: Circuit breakers usually operate under<br>A)transient state of
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
Q19: Thermal overload relays are used to protect
Q20: A thermal protection switch can protect against<br>A)short-circuit<br>B)temperature<br>C)overload<br>D)over