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Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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![Q1 The magnetic circuit of Figure Q1(a) consists of rings of magnetic material in a stack of height
h. The rings have inner radius R¡ = 3.2 cm, outer radius R, = 9.2 cm, stack height, h = 2.0 cm, air
gap, g = 0.05 cm and the number of turns, N = 200 turns. If the fringing in the air gap increases
the effective cross-sectional area of the air gap by 5% and the relative permeability µ, = 4000,
determine:
(а)
The mean core length l, and the core cross-sectional area A.
(b)
The reluctance of the core R. and reluctance of the air gap R,.
(c)
The current i that required to produce a flux density of Bg
= 1.25 T at an air gap.
(d)
If the current i is double from Q1(iii), determine the flux density in the air gap.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fae0a2fdc-6c30-4813-ab3e-d1d5dc07d1d3%2Ff964424c-14f9-4abc-a56c-58adf7a1695c%2F0mn0mt_processed.png&w=3840&q=75)
Transcribed Image Text:Q1 The magnetic circuit of Figure Q1(a) consists of rings of magnetic material in a stack of height
h. The rings have inner radius R¡ = 3.2 cm, outer radius R, = 9.2 cm, stack height, h = 2.0 cm, air
gap, g = 0.05 cm and the number of turns, N = 200 turns. If the fringing in the air gap increases
the effective cross-sectional area of the air gap by 5% and the relative permeability µ, = 4000,
determine:
(а)
The mean core length l, and the core cross-sectional area A.
(b)
The reluctance of the core R. and reluctance of the air gap R,.
(c)
The current i that required to produce a flux density of Bg
= 1.25 T at an air gap.
(d)
If the current i is double from Q1(iii), determine the flux density in the air gap.
![Ro
R
N turns
Figure 1(a)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fae0a2fdc-6c30-4813-ab3e-d1d5dc07d1d3%2Ff964424c-14f9-4abc-a56c-58adf7a1695c%2F2bcswfp_processed.png&w=3840&q=75)
Transcribed Image Text:Ro
R
N turns
Figure 1(a)
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