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Armature reaction is demagnetizing in nature due to purely lagging load.

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in Electric Drives by (99.8k points)
Armature reaction is demagnetizing in nature due to purely lagging load.

(a) True

(b) False

This question was posed to me during an interview.

This interesting question is from DC Motors topic in section Characteristics of DC & AC Motors of Electric Drives

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The correct choice is (a) True

The explanation: Due to purely lagging load, armature current is in opposite phase with the field magneto-motive force. Armature magneto-motive force produced due to this current will be in the opposite phase with the field flux. It will try to reduce the net magnetic field.

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