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Armature reaction is purely demagnetizing in nature due to a capacitive load in the synchronous motor.

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Armature reaction is purely demagnetizing in nature due to a capacitive load in the synchronous motor.

(a) True

(b) False

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This interesting question is from Induction Motors topic in division Speed Control of Direct Current Motors & Induction Motors of Electric Drives

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Correct answer is (a) True

Explanation: Due to a capacitive load, armature current is in opposite and 90° phase with the field magneto-motive force. Armature magneto-motive force produced due to this current will be in 180° phase and 90° phase with the field flux. The nature of the armature reaction is partially demagnetizing and cross magnetizing.

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