Q1 The magnetic circuit of Figure Q1(a) consists of rings of magnetic material in a stack of heighth. The rings have inner radius R¡ = 3.2 cm, outer radius R, = 9.2 cm, stack height, h = 2.0 cm, airgap, g = 0.05 cm and the number of turns, N = 200 turns. If the fringing in the air gap increasesthe 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. RoRN turnsFigure 1(a)

Electrical machines can be either generator or motors. They can be either Ac machines or DC…

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 µy = 4000, determine: (a) 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 Rg. (c) The current i that required to produce a flux density of B, = 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.

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 µy = 4000, determine: (a) 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 Rg. (c) The current i that required to produce a flux density of B, = 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.

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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