DC Generators
Lap winding is composed of

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

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DC Generators
Inter-pole flux should be sufficient to

Neutralize the commutating self induced e.m.f.
None of these
Neutralize both the armature reaction flux as well as commutating e.m.f. induced in the coil
Neutralize the armature reaction flux

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