Switchgear Protections - Practice Test

(A) to operate the relay of circuit breaker

(B) as a substitute for circuit breaker

(C) always independent of the position of circuit breaker

(D) generally on both sides of a circuit breaker

(D) generally on both sides of a circuit breaker

(A) transient state of short-circuit current

(B) sub-transient state of short-circuit current

(C) steady state of short-circuit current

(D) after D. C. component has ceased

(A) transient state of short-circuit current

(A) slow making and breaking of load circuit contacts

(B) foreign matter on the contact surface

(C) too low contact pressure

(D) all of the above

(D) all of the above

(A) reactors

(B) resistors

(C) capacitors

(D) none of the above

(A) reactors

(A) overload

(B) reverse current

(C) open-circuits

(D) short-circuits

(D) short-circuits

Switchgear Protections - Study Mode