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The field current flowing in the conductor’s acts as demagnetizing force on the fraction tips of the magnet.

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in Design of Electrical Machines by (687k points)
The field current flowing in the conductor’s acts as demagnetizing force on the fraction tips of the magnet.

(a) true

(b) false

The question was asked in an internship interview.

I'd like to ask this question from Design Preliminaries in portion Design of Permanent Magnet (PM) DC Motors of Design of Electrical Machines

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Correct choice is (b) false

To explain I would say: The armature current flowing in the conductors acts as demagnetizing force. Its acts on the fraction tips of the magnets present.

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