What is the formula of the area of each end ring?(a) area of each end ring =0.32 * total cross section of rotor bars * number of poles(b) area of each end ring =0.32 / total cross section of rotor bars * number of poles(c) area of each end ring =0.32 * total cross section of rotor bars / number of poles(d) area of each end ring =1/0.32 * total cross section of rotor bars * number of polesThis question was posed to me at a job interview.Query is from Design of Rotor in chapter Design of Single Phase Induction Motor of Design of Electrical Machines

What is the formula of the area of each end ring?(a) area of each end

1.	What is the formula of the area of each end ring?(a) area of each end ring =0.32 * total cross section of rotor bars * number of poles(b) area of each end ring =0.32 / total cross section of rotor bars * number of poles(c) area of each end ring =0.32 * total cross section of rotor bars / number of poles(d) area of each end ring =1/0.32 * total cross section of rotor bars * number of polesThis question was posed to me at a job interview.Query is from Design of Rotor in chapter Design of Single Phase Induction Motor of Design of Electrical Machines
Answer» Correct answer is (c) area of each end ring =0.32 * TOTAL CROSS SECTION of rotor bars / number of POLES The best I can explain: First the total cross section of rotor bars along with the number of poles are calculated. On SUBSTITUTION the area of each end ring is obtained.

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