DC Generators
Inter-pole flux should be sufficient to

Neutralize the armature reaction flux
Neutralize the commutating self induced e.m.f.
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 D.C. generator

Magnetization characteristic = external characteristic
Internal characteristic = magnetization characteristic ohmic drop
External characteristic = magnetization characteristic ohmic drop armature reaction
External resistance = internal characteristic armature reaction

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