The magnetic flux density measured 1 meter from a current carrying wire is 0.000333 Tesla. The current in the wire is 10A. The magnetic permeability of the medium surrounding the wire is most nearly: -1 a) 1.09 x 10-4H. . m b) 6.28 x 10-4H.m-1 c) 2.09 x 10-4H.m d) 5.08 x 10-4H.m-1 -1

The magnetic flux density measured 1 meter from a current carrying wire is 0.000333 Tesla. The current in the wire is 10A. The magnetic permeability of the medium surrounding the wire is most nearly: -1 a) 1.09 x 10-4H. . m b) 6.28 x 10-4H.m-1 c) 2.09 x 10-4H.m d) 5.08 x 10-4H.m-1 -1

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 3RQ

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Concept explainers

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

Question

The magnetic flux density measured 1 meter from a current carrying wire is 0.000333 Tesla. The current in the
wire is 10A. The magnetic permeability of the medium surrounding the wire is most nearly:
a) 1.09 x 10-4H.m
b) 6.28 x 10-4H·m-¹
1
c) 2.09 x 10-4H.m-1
d) 5.08 x 10-4H∙m¯¹

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