Winding Of Direct Current Machine Objective Questions and Answers
36. A frog-leg winding is used in a DC machine to eliminate
A. The use of equalizers in lap winding
B. The use of compensating winding
C. Reactance voltage produced due to communication
D. None of the above
✔ View Answer
A. The use of equalizers in lap winding
✍ Your Comments
37. Number of tappings to equalizer ring is equal to number of
A. Poles
B. Pole pairs
C. Parallel paths
D. Commutator segments
✔ View Answer
✍ Your Comments
38. In a DC machine armature winding, the number of commentators segments is equal to the number of armature
A. Coils
B. Coil sides
C. Conductors
D. Turns
✔ View Answer
✍ Your Comments
39. For both lap and wave windings there are as many commutator bars as the number of
A. Armature conductors
B. Winding elements
C. Poles
D. Slots
✔ View Answer
✍ Your Comments
40. In a DC machine fractional pitch winding is employed to
A. Increase generated voltage
B. Reduce sparking
C. Save copper
D. Both B and C
✔ View Answer
✍ Your Comments