ferromagnetic core is shown in Figure P1-2. The depth of the core is 5 cm. The other dimensions of the core are as shown in the figure. Find the value of the current that will produce a flux of 0.005 Wb. With this current, what is the flux density at the top of the core? What is the flux density at the right side of the core? Assume that the relative permeability of the core is 800. -10cm- -20 cm- 500 turns a. 670 kA t/Wb b. 330 kA t/Wb c. 500 kA t/Wb d. 256 kA t/Wb Core depth = 5 cm 15cm 15cm 15cm б e

ferromagnetic core is shown in Figure P1-2. The depth of the core is 5 cm. The other dimensions of the core are as shown in the figure. Find the value of the current that will produce a flux of 0.005 Wb. With this current, what is the flux density at the top of the core? What is the flux density at the right side of the core? Assume that the relative permeability of the core is 800. -10cm- -20 cm- 500 turns a. 670 kA t/Wb b. 330 kA t/Wb c. 500 kA t/Wb d. 256 kA t/Wb Core depth = 5 cm 15cm 15cm 15cm б e

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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Problem 2: Consider the magnetic core shown in figure P-2 and notice that three sides of the core are of uniform width, whereas the forth side is somewhat thinner. The depth of the core into the page is 10 cm. The coil has 300 turns and the relative permeability of the core is 2500. Determine the current that will produce 50 mWeb flux in the core. I 10cm 20cm Figure P-2 ★ 5cm T 10cm 20cm 10cm
2. AC-core with a gap of 0.0001m has a coil number of 100 and a current of 10mA. First find the Reluctance of the core given that the Iron core has a negligible reluctance and only the air reluctance contributes to the majority of reluctance. The core has a cross sectional area of 2cm^2. Next find the flux flowing thru the C-core.
14. A coil with 150 turns is wound over a 200 cm a cylinder iron core whose relative permeability is 250. If a current of 2 A is pass through the coil, determine the flux density in the core. a. 0.04 T b. 0.07 T c. 0.12 T d. 0.10 T
An iron circuit with a small 0.75 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 (4, = 800 for iron).
A coil of wire is wound around the left side of a ferromagnetic core. It is supplied by a source (not shown in the figure), such that the current i1 is directed as shown. At the instant shown, the current i1 is increasing. What will be the direction of the magnetic flux through the core? O a. To the left O b. None of the others are correct. To the right Clockwise O c. O d. O e. O f. There will be no magnetic flux Counterclockwise core
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. Takethe relative permeability of soft iron as 1100. Determine the flux density
Find the ratio of exciting currents with and without a 1mm air gap in a magnetic core of mean length 50cms and relativepermeability of 2500 and cross-section of 1cm 2 in a 1000 turn coil wound on the core. The flux density in both cases must be1T.
(b) A ferromagnetic is shown in figure Q3(b). Find the value of the current that will produce a flux of 0.005wb. With this current, what is the flux density at the top of the core? What is the flux density at the right side of the core? Assume that the relative permeability of the core is 1000. The depth of the core is 5cm. The other dimensions of the core are as shown in the figure. 15 cm 500 turns 15 cm 45 cm 5 сm 15 cm 10 cm 35 cm Figure Q3(b)