DC Generators
In a wave winding, the commutator pitch is approximately equal to

Thrice the pole pitch
None of the listed here
Pole pitch
Twice the pole pitch

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DC Generators
In a dc generator, the eddy current power loss is

Inversely proprtional to thickness of each lamination
Directly proportional to sqaure of thickness of each lamination
None of the listed here
Directly proportional to thickness of each lamination

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