DC Generators
In a D.C. generator the magnetic neutral axis coincides with the geometrical neutral axis, when

There is no load on the generator
The generator runs on full load
The generator runs on designed speed
The generator runs on overload

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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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