DC Generators
The armature of dc machine is laminated in order to reduce

Eddy current loss
Hysteresis loss
Frictional loss
Copper loss

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DC Generators
In D.C. generators the polarity of the interpoles

Is opposite to that of the main pole ahead
Is the same as that of the main pole ahead
Is the same as that of the immediately preceding pole
Is neutral as these poles do not play part in generating e.m.f.

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DC Generators
Inter-pole flux should be sufficient to

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

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