DC Generators
Wave winding is composed of

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

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DC Generators
Inter-pole flux should be sufficient to

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

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