Example (3). A wrought iron bar is 30 cm long and 2 cm in diameter is bent into a circular shape as shown in Figure below. It is then wound wit 500 turns of wire. Calculate the current required to produce a flux of 0.5 mWb in the magnetic circuit in each of the following cases: (a) The structure has no air gap and r = 4000 (assumed constant) (b) The structure has an air gap of 1 mm, and µ, = 4000 (assumed constant) (c) The structure has an air gap of 1 mm, and B-H charteristics are given in the table below. H(At/m) 2500 3000 3500 4000 B(Tesla) 1.550 1.590 1.600 1.615 500 tums le - 30 cm Aç= # x10-4 [1 mm
Example (3). A wrought iron bar is 30 cm long and 2 cm in diameter is bent into a circular shape as shown in Figure below. It is then wound wit 500 turns of wire. Calculate the current required to produce a flux of 0.5 mWb in the magnetic circuit in each of the following cases: (a) The structure has no air gap and r = 4000 (assumed constant) (b) The structure has an air gap of 1 mm, and µ, = 4000 (assumed constant) (c) The structure has an air gap of 1 mm, and B-H charteristics are given in the table below. H(At/m) 2500 3000 3500 4000 B(Tesla) 1.550 1.590 1.600 1.615 500 tums le - 30 cm Aç= # x10-4 [1 mm
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Transcribed Image Text:Example (3). A wrought iron bar is 30 cm long and 2 cm in
diameter is bent into a circular shape as shown in Figure below. It is
then wound wit 500 turns of wire. Calculate the current required to
produce a flux of 0.5 mWb in the magnetic circuit in each of the following
cases: (a) The structure has no air gap and r = 4000 (assumed constant)
(b) The structure has an air gap of 1 mm, and µ = 4000 (assumed constant)
(c) The structure has an air gap of 1 mm, and B-H charteristics are given
in the table below.
H(At/m) 2500 3000 3500
B(Tesla) 1.550 1.590
1.600
500 turns
lc = 30 cm
Aç= * x10-4
↓
1 mm
4000
1.615
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