A. lagging power factor only
B. leading power factor only
C. unity power factor only
D. lagging, leading and unity power factors
A. high excitation only
B. low excitation only
C. both high and low excitation
D. none of the above
A. alternator type machines
B. induction type machines
C. salient pole type machines
D. smooth cylindrical type machines
A. High field current
B. Low short circuit ratio
C. High core losses
D. Low field current
A. decrease both armature current and power factor
B. decrease armature current but increase power factor
C. increase armature current but decrease power factor
D. increase both its armature current and power factor
A. a higher value of stability limit
B. a small value of inherent regulation
C. a higher synchronizing power which makes the machine less sensitive to load variations
D. all of the above
A. more than the supply voltage
B. less than the supply voltage
C. equal to the supply voltage
D. None of these