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In DC generators, armature reaction causes the Main Field Flux to undergo:

AComplete elimination of harmonics
BOnly zero-sequence suppression
CCross-magnetizing and demagnetizing effects
DOnly magnetizing effects

Explanation

Armature reaction distorts (cross-magnetizes) the main field flux under normal load and weakens (demagnetizes) it under brush shift.

Submitted by: mcqstutor Team More Electrical Engineering MCQs →

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