Q2. a) With reference to Figure 1, the Biot-Savart law can be used to show that themagnetic flux density due to a straight current-carrying wire of finite length isgiven byμο4πr(cos α₂-cos α₁) ad₁αFigure 1Show that this expression is consistent with Ampère's law when applied to along straight current carrying conductor and explain the limitations of applyingAmpère's law to practical circuits.

Limitation of Ampere's Circuital Law: It applies only to Magnetostatics and is true for steady…

Answered: Q2. a) With reference to Figure 1, the…

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 magnetic ring has reluctance of 1.675 × 10⁰ AT weber. The flux to be produced by the coil is 800 x 10 webers, then the AT required for the m.m.f. will be
A flux of 0.0016 Wb flows in a silicon sheet steel coil/core. The arrangement appears as shown below with the following dimensions: Ac = 0.0025 m? Core/gap area: Flux path length: le = 0.350 m lg = 0.0015 m N = 500 Air gap length: Number of turns: %3D A. What is the current, I, through the winding? B. What is the energy stored in the inductance? C. Assume that the current is given by i =9.75 sin (3147) A. What is the RMS voltage that would appear across the winding? D. Assume that the gap is removed from the arrangement with the flux path remaining at 0.350 m. For a flux of 0.0016 Wb, what is the inductance of the arrangement? E. What is the energy stored in the inductance with the gap removed?
An iron circuit with a small0.75 mm air gap is shown in Figure 1. A 6000 turn coil carries a current I = 18 mA which sets up a flux within the iron and across the air gap. The cross section of the iron is a consistent 0.8 cm2, and the mean length of the flux path is 0.15 m. a) Redraw the magnetic circuit using schematic symbols of an electric circuit with reluctance in each part of the circuit. b) State's Ohm's Law for magnetic circuit. c) By neglecting the effect of fringing, calculate the reluctance of the circuit. d) Find the flux within the core. N = 6000 Iron circuit (u, = 800 for iron). Figure 1
Figure Q1(a) shows a piece of ferromagnetic core with magnetic flux (B) with circular current (I) around the core. Figure Q1(b) show laminated ferromagnetic core with the same magnetic flux (B) and circular currents. With the aid of diagrams, explain how the current as highlighted in red (I) is developed in the ferromagnetic core in Figure Q1(a). B (a) (b) Figure 1(a) A ferromagnetic core and (b) laminated ferromagnetic core
An iron core has a cross-sectional area of 10-3 square meter and mean circumference of 1 meter. The relative permeability of the material is 500 and the number of turns is 200. Determine the current required to set up a flux of0.001 weber. 7.54 A b. 7.96 A c. 8.19 A d. 8.47 A a.
QUESTION 3 4 In a ferromagnetic material, the relation between flux and flux density is O linear O nonlinear O not related O inverse
Question 3.4 (3.4)The length of a magnetic circuit in a moving iron instrument is 300mm. The coil around the soft-iron core has 360 turns and takes a current of 1.75 A. The core is square in section with sides of 20 mm. Take the relative permeability of soft iron as 1100. 3.4.1) Determine the magnetomotive force in the core 3.4.2)Determine the field strength 3.4.3) Determine the total flux
Q4) Identify the unit of flux density a. (m x m)/amp b. m x m c. Wb/(m x m) d. Wb
15. A toroidal core with a mean circumference of 100 cm and a cross sectional area of 10 cm2 is wound with 500 turns of wire. What current would be required to generate a flux of 1 mWb in the core. Assume the core has a relative permeability of 800.
A magnetic ring has a mean circumference of 20 cm and a cross section of 20 cm² and has 800 numbers of turns of wire. When the exciting current is 5 A, the flux is 2mWb. The relative permeability of iron is nearly?
In the magnetic circuit shown below, what is the flux density produced if the relative permeability of the core material under the given condition is 1000? 5 A-> 100 turns R = 5 cm
Q1/ A / Discuss B-H curve of a ferro-magnetic material . B / Define the following terms (any three) : (i) MMF (ii ) magnetism. (iii ) Reluctance (v) flux density

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