DC Generators
In case of D.C. machine winding, number of commutator segments is equal to

Number of armature turns
Number of armature coils
Number of armature coil sides
Number of armature conductors

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DC Generators
Lap winding is composed of

Any odd number of conductors
That even number which is exact multiple of poles
Any even number of conductors
That even number which is exact multiple of poles + 2

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