Answered: The energy stored in the air gap in…

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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An electric bolt consists of a hollow cylindrical fixed armature and a cylindrical stem, arranged as shown in Figure. Assuming that the reluctance of the iron is negligible compared to that of the air gap, and that the rod-armature joint has a negligible air gap compared to the main air gap e, calculate:

a) The energy stored in the air gap in joules if e = 1 cm; the air gap area is 0.8 cm² and the excitation current is 1 A DC.

b) Magnetic force in the previous case.
Ans: a) 5 · 10 ^-3 Joules; b) 0.497 newtons (I need the procedure)

Translation of the image: Bobina=Coil.armadura= Armor. Vástago=Stem. Espiras=Spires.

H
e
Bobina
Armadura
Vástago
N=1000 espiras

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