Answer to Question #167733 in Electrical Engineering for Modester Chibesa

Question #167733

A coil is wound with 300 turns over a stee ring of relative permeability 900 having a mean circumference of 400 mm and a cross-sectional area of 500 mm2 . If the coil has a resistance of 8Ω and is connected across a 20V dc supply, using a neat sketch, calculate:

a).The coil magneto-motive force

b).The magnetic field strength

c).The total flux

d).The reluctance of the ring

e).The permeance of the ring and

f).The flux density in the ring



1
Expert's answer
2021-03-01T02:19:07-0500

a)MMF is = 600 AT

b) Magnetise force = 2000 AT/m

c) Flux is = 3.3929 mWb

d) Reductance is = 176838.82 AT/WT

e)permeance of the ring= 12.45 MWb

f) flux density = 10.6MWb


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