a. Explain the terms, coil span, coil pitch, short pitching and chording of coils. b. Equalizer rings are needed in lap wound dc machines not in wave wound explain the reason and the use of equalizer rings with the help of an example. c. What are dummy coils? d. What is the purpose of using short-pitched coils in ac windings?

a. Explain the terms, coil span, coil pitch, short pitching and chording of coils. b. Equalizer rings are needed in lap wound dc machines not in wave wound explain the reason and the use of equalizer rings with the help of an example. c. What are dummy coils? d. What is the purpose of using short-pitched coils in ac windings?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter33: Single-phase Motors

Section: Chapter Questions

Problem 32RQ

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