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What is the formula of the effective permeance?(a) effective permeance = effective flux/total mmf(b) effective permeance = effective flux/mmf of air gap(c) effective permeance = effective flux * total mmf(d) effective permeance = effective flux * mmf of air gapThis question was addressed to me in a job interview.This question is from Specific Permeance & Calculation of Magnetizing Current in section Principles of Magnetic Circuit Design of Design of Electrical Machines

Answer»

The correct option is (a) EFFECTIVE PERMEANCE = effective flux/TOTAL mmf

Easiest explanation: The effective flux and the total mmf is first calculated. On SUBSTITUTION of the values the effective permeance is calculated.



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