A. wave wound
B. lap wound
C. delta wound
D. duplex wound
A. using conductor of annealed copper
B. using commutator with large number of segments
C. using carbon brushes of superior quality
D. using equiliser rings
A. to reduce eddy current losses
B. to enhance flux density
C. to amplify voltage
D. to provide mechanical balance for the rotor
A. 640 V
B. 620 V
C. 600 V
D. 580 V
A. will be less than 250 V
B. will always be 250 V
C. may be greater or less than 250 V
D. none of the above
A. neutralising residual magnetism
B. creating residual magnetism by a D.C. source
C. making the magnetic losses of forces parallel
D. increasing flux density by adding extra turns of windings on poles
A. Self-excited generator
B. Separately excited generator
C. Level compounded generator
D. All of the above