A. single phase motors only
B. two phase motors only
C. two single phase motors running in parallel
D. three phase motors
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. heavy loads
B. internal short-circuits
C. external short-circuits
D. all of the above
A. load flow
B. load flow and short-circuit
C. load flow and stability
D. load flow, short-circuit and stability
E. none of the above
A. delayed trip action
B. instantaneous trip action
C. both of the above
D. none of the above
A. good selectivity and reliability
B. economy and simplicity
C. high speed and selectivity
D. all of the above
A. 1 mega ohms
B. 10 mega ohms
C. 100 mega ohms
D. 500 mega ohms