DC Generators
The armature winding of a dc machine is place on the rotor to ______

Save iron
Facilitate commutation
Reduce losses
Reduce armature reaction

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DC Generators
Inter-pole flux should be sufficient to

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

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