DC Generators
Inter-pole flux should be sufficient to

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

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

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

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

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

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