DC Generators
In lap winding, the number of brushes is always

Two
Same as the number of poles
Double the number of poles
Half the number of poles

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

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

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