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What should be the minimum value of the ratio of the magnetic to electric loading?

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in Design of Electrical Machines by (687k points)
What should be the minimum value of the ratio of the magnetic to electric loading?

(a) 40

(b) 30

(c) 50

(d) 60

This question was addressed to me in examination.

My doubt is from Design Steps and Considerations in portion Design of Permanent Magnet (PM) DC Motors of Design of Electrical Machines

1 Answer

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Best answer
Right choice is (c) 50

Explanation: The calculation of the ratio of the magnetic to electric loading is the second step in the design of the PMDC motors. It should have a minimum value of 50.

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