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A ferromagnetic core whose mean path length is 12×102 m with a small gap of 3×104. The cross-sectional area of the core is 40x10 m?, the relative permeability of the core is 6000, and the coil of wire on the core has 700 turns. N=7 Assume that fringing in the air gap increases the effective cross-sectional area of the air gap by 8%. Find: (a) the total reluctance of the flux path (iron plus air gap) (b) the current required to produce a flux density of 5.5 T in the air gap.

A ferromagnetic core whose mean path length is 12×102 m with a small gap of 3×104. The cross-sectional area of the core is 40x10 m?, the relative permeability of the core is 6000, and the coil of wire on the core has 700 turns. N=7 Assume that fringing in the air gap increases the effective cross-sectional area of the air gap by 8%. Find: (a) the total reluctance of the flux path (iron plus air gap) (b) the current required to produce a flux density of 5.5 T in the air gap.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Quastion 4: A ferromagnetic core whose mean path length is 12x102 m with a small gap of 3x104. The cross-sectional area of the core is 40x104 m2, the relative permeability of the core is 6000, and the coil of wire on the core has 700 turns. N= 700 turns Assume that fringing in the air gap increases the effective cross-sectional area of the air gap by 8%. Find: (a) the total reluctance of the flux path (iron plus air gap) (b) the current required to produce a flux density of 5.5 T in the air gap. I= 3x10 m A- 40x10 m k = 12x10 m
Transcribed Image Text:Quastion 4: A ferromagnetic core whose mean path length is 12x102 m with a small gap of 3x104. The cross-sectional area of the core is 40x104 m2, the relative permeability of the core is 6000, and the coil of wire on the core has 700 turns. N= 700 turns Assume that fringing in the air gap increases the effective cross-sectional area of the air gap by 8%. Find: (a) the total reluctance of the flux path (iron plus air gap) (b) the current required to produce a flux density of 5.5 T in the air gap. I= 3x10 m A- 40x10 m k = 12x10 m
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