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Armature reaction is magnetizing in nature due to a purely resistive load in the synchronous generator.

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Armature reaction is magnetizing in nature due to a purely resistive load in the synchronous generator.

(a) True

(b) False

I have been asked this question during an online exam.

This is a very interesting question from Speed Control of Series Motor topic in section Speed Control of Direct Current Motors & Induction Motors of Electric Drives

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Correct answer is (b) False

Explanation: Due to a purely resistive load, armature current is in quadrature with the field magneto-motive force. Armature magneto-motive force produced due to this current will be in quadrature with the field flux. It will try to increase the net magnetic field.

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