Switchgear Protections - Study Mode
[#1] Magnetic circuit breaker has ______ trip action.
Correct Answer
(B) instantaneous
[#2] In a circuit breaker the basic problem is to
Correct Answer
(B) extinguish the arc
[#3] The arcing contacts in a circuit breaker are made of
Correct Answer
(A) copper tungsten alloy
[#4] Air blast circuit breaker is used for
Correct Answer
(D) repeated duty
[#5] The steady state stability of the power system can be increased by
Correct Answer
(A) Connecting lines in parallel