A core with three legs is shown in the figure below. Its depth is 5 cm, and there are 400 turns on the centre leg. The remaining dimensions are shown in the figure. The core is composed of steel having the magnetization curve is also given below. Answer the following questions about this core: 1. What current is required to produce a flux density of 0.5 T in the central leg of the core? 2. What current is required to produce a flux density of 1.0 T in the central leg of the core? Is it twice the current in part (a)? 3. What are the reluctances of the central and right legs of the core under the conditions in part (a)? 4. What are the reluctances of the central and right legs of the core under the conditions in part (b)? 5. What conclusion can you make about reluctances in real magnetic cores?
A core with three legs is shown in the figure below. Its depth is 5 cm, and there are 400 turns on the centre leg. The remaining dimensions are shown in the figure. The core is composed of steel having the magnetization curve is also given below. Answer the following questions about this core: 1. What current is required to produce a flux density of 0.5 T in the central leg of the core? 2. What current is required to produce a flux density of 1.0 T in the central leg of the core? Is it twice the current in part (a)? 3. What are the reluctances of the central and right legs of the core under the conditions in part (a)? 4. What are the reluctances of the central and right legs of the core under the conditions in part (b)? 5. What conclusion can you make about reluctances in real magnetic cores?
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter12: Batteries And Other Sources Of Electricity
Section: Chapter Questions
Problem 15RQ: Three 12-V, 100-A-hr batteries are connected in series. What are the output voltage and A-hr...
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A core with three legs is shown in the figure below. Its depth is 5 cm, and there are 400 turns on the centre leg. The remaining dimensions are shown in the figure. The core is composed of steel having the magnetization curve is also given below. Answer the following questions about this core:
1. What current is required to produce a flux density of 0.5 T in the central leg of the core?
2. What current is required to produce a flux density of 1.0 T in the central leg of the core? Is it twice the current in part (a)?
3. What are the reluctances of the central and right legs of the core under the conditions in part (a)?
4. What are the reluctances of the central and right legs of the core under the conditions in part (b)?
5. What conclusion can you make about reluctances in real magnetic cores?
Transcribed Image Text:2.8
2.6
2.4
2.2
2.0
E 1.8
1.6
14
1.2
1.0
0.8
0.6
0.4
0.2
10
20 30 40 50
100
200 300 S00
1000
20
Magnetizing intensity H, A turns/m
Flux density B (T)
Transcribed Image Text:N 400 turns
16 cm-
16 cm-
-5 cm
-5 cm
Depth = 5 cn
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