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In an AC machine, the effect of distributing the turns in different slots, results in a further reduction of generated EMF by the factor kd. This factor is called ____________

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In an AC machine, the effect of distributing the turns in different slots, results in a further reduction of generated EMF by the factor kd. This factor is called ____________

(a) distribution/speed factor

(b) coil pitch factor

(c) winding factor

(d) all of the mentioned

This question was posed to me during an online exam.

I'd like to ask this question from Generated EMF topic in portion Principles of Electro mechanical Energy Conversions of Electrical Machines

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The correct answer is (a) distribution/speed factor

To explain: E = √2πkpkdfrNΦ, kd is the distribution factor.

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