What is the range of the ratio of the core length to pole pitch for minimum cost?(a) 1.5-2(b) 1-2(c) 1.0-1.25(d) 2-2.5I had been asked this question in an interview for job.This interesting question is from Main Dimensions topic in division Three Phase Induction Motor of Design of Electrical Machines

What is the range of the ratio of the core length to pole pitch for mi

1.	What is the range of the ratio of the core length to pole pitch for minimum cost?(a) 1.5-2(b) 1-2(c) 1.0-1.25(d) 2-2.5I had been asked this question in an interview for job.This interesting question is from Main Dimensions topic in division Three Phase Induction Motor of Design of Electrical Machines
Answer» Right option is (a) 1.5-2 The BEST explanation: 1.0-1.25 is the RANGE of the ratio of the CORE length to pole PITCH for good power FACTOR. For minimum cost, 1.5 is the minimum range for the ratio and 2 is the maximum range for the ratio.

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