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Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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2.3

Transcribed Image Text:Question # 2: A square magnetic core has a mean path length of 55 cm and a cross sectional area of 150 cm?. A 200-tum coil of
wire is wrapped around one leg of the core. The core is made of a material having the magnetization curve shown in the figure.
1.
How much current is required to produce 0.012 Wb of flux in the core?
What is the core's relative permeability at that current level?
3. What is its reluctance?
2.
2.8
2.6
2.4
- Magnetic
2.2
----
2.0
E 1.8
Mean core
length l.
flux lines
1.6
1.4
Cross-sectional
1.2
area A.
1.0
0.8
Winding.
Magnetic core
permeability u
0.6
0.4
N tums
0.2
10
20 30 40 50
100
200 300 50
1000
2000
5000
Magnetizing intensity H, A turnsm
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