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If the armature current is by mistake increased to 50% for the dc machine then ________

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If the armature current is by mistake increased to 50% for the dc machine then ________

(a) the induced emf remains unchanged

(b) the induced emf doubles

(c) the induced emf halves

(d) none of the mentioned

The question was posed to me in an online interview.

Query is from EMF Generated in the Armature in section Electromechanical Energy Conversions of Electrical Machines

1 Answer

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Correct option is (a) the induced emf remains unchanged

Easy explanation: Emf is proportional to speed of rotation and flux.

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