Question

1) Consider the magnetic structure shown below. a. Draw the analogous magnetic circuit, clearly showing the MMF, the flux and the various reluctances. b. Determine the current "i" required to establish a flux of 2.4(10)-4Wb in the magnetic circuit. Consider that the fringing effect increases the area of the air-gap by 10%. c. Would a 100% increase in the magnetic permeability, result in a corresponding decrease in the current required to establish the same flux as before? Justify your answer. Metal Core Depth = 0.01 m, ?r = 1000 i Amp N = 500 turns (as shown) 0.06 m 0.02 m 0.04 m 0.04 m 0.002 m Air-gap Drawing not exactly to scale

          1) Consider the magnetic structure shown below.
a. Draw the analogous magnetic circuit, clearly showing the MMF, the flux and the
various reluctances.
b. Determine the current "i" required to establish a flux of 2.4(10)-4Wb in the magnetic
circuit. Consider that the fringing effect increases the area of the air-gap by 10%.
c. Would a 100% increase in the magnetic permeability, result in a corresponding decrease
in the current required to establish the same flux as before? Justify your answer.
Metal Core
Depth = 0.01 m,
?r = 1000
i Amp
N = 500
turns
(as shown)
0.06 m
0.02 m
0.04 m
0.04 m
0.002 m
Air-gap
Drawing not exactly to scale

1) Consider the magnetic structure shown below.
a. Draw the analogous magnetic circuit, clearly showing the MMF, the flux and the
various reluctances.
b. Determine the current "i" required to establish a flux of 2.4(10)-4Wb in the magnetic
circuit. Consider that the fringing effect increases the area of the air-gap by 10%.
c. Would a 100% increase in the magnetic permeability, result in a corresponding decrease
in the current required to establish the same flux as before? Justify your answer.
Metal Core
Depth = 0.01 m,
?r = 1000
i Amp
N = 500
turns
(as shown)
0.06 m
0.02 m
0.04 m
0.04 m
0.002 m
Air-gap
Drawing not exactly to scale

Added by Kenneth W.

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