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What is the formula of the leakage coefficient?(a) leakage coefficient = total flux * useful flux(b) leakage coefficient = total flux / useful flux(c) leakage coefficient = useful flux / total flux(d) leakage coefficient = total flux + useful fluxI have been asked this question during an interview.This interesting question is from Modern Trends in Machine Design & Magnetic Leakage in section Fundamental Aspects of Electrical Machine Design of Design of Electrical Machines

Answer»

Right CHOICE is (b) leakage COEFFICIENT = total flux / useful flux

For explanation: The total flux is the ADDITION of the useful flux and the leakage flux is FIRST calculated. On SUBSTITUTION the leakage coefficient can be obtained.



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