A magnetic core made up of annealed sheet steel has the dimension as shown in the figure. The crosssection everywhere is 25cm^2. the flux in branches A andB is 3500 mWb but what in branch c is zero.Find the required AT for coil A and for coil C. Relative permeability of sheet steel is 1000.(Answer, AT for coil A 1225.5, AT for coil C 334.22)-- 80 cm--.--80 cm-

First we will draw the magnetic equivalent circuit for the given magnetic circuit. Then we will…

Answered: A magnetic core made up of annealed…

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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A square magnetic core has a mean length of 43 cm and a cross-sectional area of120cm2. A coil of 200 turns of wire is wound around one of the columns of the core, thewhich is made of a material whose required magnetic field strength is H=115 Aturns/m. a) How much current is required to produce a flux of 0.012 Wb, in the core?b) What is the relative permeability of the core for that current?c) What is the reluctance?
A rectangular loop carrying current I2 is placed parallel to an infinitely long filamentarywire carrying current I1 as shown in figure. Show that the force experienced by the loopis given by
Using Bio-Savart's law, determine the magnetic flux density produced by a single turn ofa current carrying loop. Consider ONLY the magnetic field along the axis of the loop.Assume that the radius of the loop is 'a', the current carried by the loop is 'l'. Otherparameters retain the standard units.
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An iron-cored choke is designed to have an inductance of 12.5 H when operating at a fluxdensity 3 T, the corresponding relative permeability of iron core is 1500. Determine thenumber of turns in the winding, given that the magnetic flux path has a mean length of 20cm in the iron core and 2 mm in air-gap that its cross-section is 15 cm2
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Below is the magnetic circuit with two windings and two air gaps. The cross-sectional area is constant in the parts of the air gaps and within the whole core and is shown with Ac. g1 = 1 mm, g2 = 0.5 mm, Ac = 200 mm2, i1 = 5 A, i2 = 3 A, N1 = 100, N2 = 50. Also, the magnetic permeability of the core can be accepted as μr = ∞. According to this information, a) Magnetic flux density in the air gaps,a) Self inductance of the windings, b) Calculate the mutual inductances between the windings.
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For a motor design, you need to design a solenoid coil that produces a magnetic flux density (B) of at least 2000 gauss when a 10 mA current flows through the conductor. Due to space limitations, the coil only can be 10 turns over a 1 cm length. To obtain the needed performance, go to Table 3 and choose a core material for the coil.
Give the definition of the electromotive force (e.m.f.) E though the the flux linkage ?ϕ and time ?t. Please use "phi" (without the quotes) for flux linkage when typing the answer. For derivatives, please use "d" (again without the quotes).
Q)In steady magnetic fields, can we define a potential function based on the current distribution from which the magnetic fields may be easily determined? Justify your answer.

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