Category: Switchgear and Protection

A. interception
B. interception and conduction
C. interception, conduction and dissipation
D. interception, conduction, dissipation and reflection
E. none of the above

A. in phase with the arc current
B. lagging the arc current by 90″
C. leading the arc current by 90°
D. none of the above

A. power
B. current
C. voltage wave
D. all of the above

A. zero current
B. maximum current
C. minimum voltage
D. maximum voltage

A. thermocouple
B. electronic and bimetallic
C. both (A) and (B)
D. none of the above

A. 0.003 sec
B. 0.001 sec
C. 0.01 sec
D. 0.10 sec
E. none of the above

A. required to operate the circuit breaker
B. absorbed by the circuit of relay
C. developed by the relay circuit
D. none of the above

A. 2
B. 4
C. 6
D. 10

A. over currents
B. short duty
C. intermittant duty
D. repeated duty

A. the spring tension
B. the rate of flux built up
C. armature core air gap
D. all of the above