Question

What is the formula of the output coefficient?

(a) output coefficient = 11 * specific magnetic loading / specific electrical loading * winding space factor * 10^-3

(b) output coefficient = 11 / specific magnetic loading * specific electrical loading * winding space factor * 10^-3

(c) output coefficient = 11 * specific magnetic loading * specific electrical loading * winding space factor * 10^-3

(d) output coefficient = 11 * specific magnetic loading * specific electrical loading / winding space factor * 10^-3

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My question is from Synchronous Machines Output Equation in division Design of Synchronous Machines of Design of Electrical Machines

Answer 1

Right answer is (c) output coefficient = 11 * specific magnetic loading * specific electrical loading * winding space factor * 10^-3

Easy explanation: The output coefficient is one of the terms required in the calculation of the output of the machine. The specific magnetic and electrical loading terms are first calculated along with the winding space factor.