An iron ring has its mean length of flux path as 60 cm and its cross sectional area as 15 cm^2. Its relative permeability is 500. Find the current required to be passed, through a coil of 300 turns wound uniformly around it, to produce a flux density of 1.2 tesla. What would be the flux density with the same current, if the iron ring is replaced by air core?

An iron ring has its mean length of flux path as 60 cm and its cross sectional area as 15 cm^2. Its relative permeability is 500. Find the current required to be passed, through a coil of 300 turns wound uniformly around it, to produce a flux density of 1.2 tesla. What would be the flux density with the same current, if the iron ring is replaced by air core?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 3RQ

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