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What is the formula for the pole arc?(a) pole arc = number of bars per pole * stator slot pitch * 0.8(b) pole arc = number of bars per pole / stator slot pitch * 0.8(c) pole arc = number of bars per pole * stator slot pitch / 0.8(d) pole arc = 1 / number of bars per pole * stator slot pitch * 0.8I had been asked this question in examination.My enquiry is from Design of Rotor in division Design of Synchronous Machines of Design of Electrical Machines

Answer»

Correct OPTION is (a) pole arc = number of bars PER pole * stator slot pitch * 0.8

To explain I would say: The number of bars per pole is CALCULATED along with the stator slot pitch. NEXT, all the values are MULTIPLIED by 0.8 and the pole arc value is obtained.



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