flux density of 1.0 T in the airgap. The details are Number of turns, N = 400 The core is made up of steel, the B-H characteristic has been given below The magnetic core length, Ic = 500 mm The airgap length, lIg = 2 mm The cross-sectional area of the core, Ag = 100 mm² Neglect leakage and fringing. Core Cross-sectional area turns Air gap

Electrical Transformers and Rotating Machines
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Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter17: Three-phase Motors
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Problem 5RQ: Name three factors that cause the magnetic field to rotate.
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Question 2 Calculate the amount of DC current required for the magnetic circuit given below to generate a
flux density of 1.0 T in the airgap. The details are
Number of turns, N = 400
The core is made up of steel, the B-H characteristic has been given below
The magnetic core length, le = 500 mm
The airgap length, Ig = 2 mm
The cross-sectional area of the core, Ag = 100 mm²
Neglect leakage and fringing.
Core
Cross-sectional
i(1)
area
as
Air gap
Magnetic path
length
Figure 1
2.0
1.8
B-H Curves for Various Metals
Steel
1.6
1.4
Magnetic
Saturation
1.2
1.0
0.8
Iron
근 0.4
Air
0.2
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
Magnetic Field Strength - H (A/m)
Figure 2
Flux Density - B (T)
Transcribed Image Text:Question 2 Calculate the amount of DC current required for the magnetic circuit given below to generate a flux density of 1.0 T in the airgap. The details are Number of turns, N = 400 The core is made up of steel, the B-H characteristic has been given below The magnetic core length, le = 500 mm The airgap length, Ig = 2 mm The cross-sectional area of the core, Ag = 100 mm² Neglect leakage and fringing. Core Cross-sectional i(1) area as Air gap Magnetic path length Figure 1 2.0 1.8 B-H Curves for Various Metals Steel 1.6 1.4 Magnetic Saturation 1.2 1.0 0.8 Iron 근 0.4 Air 0.2 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Magnetic Field Strength - H (A/m) Figure 2 Flux Density - B (T)
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