DC Generators
Lap winding is composed of

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

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

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