Question

What is the value of the flux density with respect to average flux density?

(a) value of flux density = 1.67 times of average flux density

(b) value of flux density = 1.70 times of average flux density

(c) value of flux density = 1.60 times of average flux density

(d) value of flux density = 1.50 times of average flux density

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I want to ask this question from Operating Characteristics in section Design of Single Phase Induction Motor of Design of Electrical Machines

Answer 1

Correct answer is (a) value of flux density = 1.67 times of average flux density

Easiest explanation: The value of flux density at 60° from the interpolar axis as far as gap and teeth are used in the calculation of mmf. The value of flux density = 1.67 times of average flux density.