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What is the percentage of the damper windings slot pitch with respect to stator slot pitch?(a) 30%(b) 40%(c) 20%(d) 60%The question was asked by my college director while I was bunking the class.This interesting question is from Design of Rotor topic in portion Design of Synchronous Machines of Design of Electrical Machines |
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Answer» CORRECT choice is (C) 20% The best explanation: The slot pitch of damper WINDINGS is 20% of the stator slot pitch. This is because to reduce the current induced in damper windings by TOOTH RIPPLES. |
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