An iron-ring of mean length 30 cm is made of three pieces of cast iron, each has the same length but their respective diameters are 4, 3 and 2.5 cm. An air-gap of length 0.5 mm is cut in the 2.5 cm piece. If a coil of 1,000 turns is wound on the ring, find the value of the current it has to carry to produce a flux density of 0.5 Wb/m² in the air gap. B/H characteristic of cast-iron may be drawn from the following : ans: 0.58A B(Wb/m2) 0.1 0.2 0.3 0.4 0.5 0.6 Н(АTm) 280 620 990 1400 2000 2800

An iron-ring of mean length 30 cm is made of three pieces of cast iron, each has the same length but their respective diameters are 4, 3 and 2.5 cm. An air-gap of length 0.5 mm is cut in the 2.5 cm piece. If a coil of 1,000 turns is wound on the ring, find the value of the current it has to carry to produce a flux density of 0.5 Wb/m² in the air gap. B/H characteristic of cast-iron may be drawn from the following : ans: 0.58A B(Wb/m2) 0.1 0.2 0.3 0.4 0.5 0.6 Н(АTm) 280 620 990 1400 2000 2800

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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