A ferromagnetic core is shown in Figure 1. The relative permeability of the core is assumed to be 2500 and constant. There is a 5% increase in the effective area of the air gap due to fringing effects. The depth of the core is given as 5 cm.
A ferromagnetic core is shown in Figure 1. The relative permeability of the core is assumed to be 2500 and constant. There is a 5% increase in the effective area of the air gap due to fringing effects. The depth of the core is given as 5 cm.
Chapter3: Magnetic Starters
Section: Chapter Questions
Problem 30SQ
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Question
A ferromagnetic core is shown in Figure 1. The relative permeability of the core is
assumed to be 2500 and constant. There is a 5% increase in the effective area of
the air gap due to fringing effects. The depth of the core is given as 5 cm.
The Rtotal is found to be 226.192k At/Wb
Transcribed Image Text:b) Calculate the magnetic intensity, H, in the left leg, bottom leg and the air gap.
| 5 cm +
+ 5 cm 4
35 cm
15 cm
ЗА
4 A
30 cm
500 turns
300 turns
0.1 cm
15 cm
Figure 1
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