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What is the formula for flux per pole?

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What is the formula for flux per pole?

(a) flux per pole = average magnetic flux * pole pitch * length

(b) flux per pole = average magnetic flux / pole pitch * length

(c) flux per pole = average magnetic flux * pole pitch / length

(d) flux per pole = average magnetic flux * pole pitch + length

This question was posed to me in final exam.

I want to ask this question from Stator Winding topic in section Three Phase Induction Motor of Design of Electrical Machines

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The correct option is (a) flux per pole = average magnetic flux * pole pitch * length

The best I can explain: First the average magnetic flux is calculated. Then the pole pitch is calculated and then the length of the pole is calculated.

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