DC Generators
Wave winding is composed of

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

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DC Generators
While applying Fleming's right-hand rule to and the direction of induced e.m.f., the thumb points towards

Direction of flux
Direction of motion of the conductor if forefinger points in the direction of generated e.m.f.
Direction of induced e.m.f.
Direction of motion of conductor, if forefinger points along the lines of flux

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