D.C. series generator is used_________________?
A. to supply traction load
B. to supply industrial load at constant voltage
C. voltage at the toad end of the feeder
D. for none of the above purpose
A. to supply traction load
B. to supply industrial load at constant voltage
C. voltage at the toad end of the feeder
D. for none of the above purpose
A. copper lugs
B. resistance wires
C. insulation pads
D. brazing
A. to reduce eddy current losses
B. to enhance flux density
C. to amplify voltage
D. to provide mechanical balance for the rotor
A. cumulatively compounded long shunt
B. deferentially compounded long shunt
C. cumulatively compounded short shunt
D. differentially compounded short shunt
A. Insulation failure between two commutator bars
B. Insulation failure between two turns of a coil
C. Two of more turns of the same coil getting grounded
D. All of the above
A. lie under south pole
B. lie under north pole
C. lie under interpolar region
D. are farthest from the poles
A. rising voltage characteristics
B. identical voltage characteristics
C. droog voltage characteristics
D. linear voltage characteristics