21. A 20 cm long conductor is moving upward between the poles of a magnet as shown in Figure 7-53. The pole faces are 8.5 cm on each side and the flux is 1.24 mWb. The motion produces an induced voltage across the conductor of 44 mV. What is the speed of the conductor? FIGURE 7-53 %S4

21. A 20 cm long conductor is moving upward between the poles of a magnet as shown in Figure 7-53. The pole faces are 8.5 cm on each side and the flux is 1.24 mWb. The motion produces an induced voltage across the conductor of 44 mV. What is the speed of the conductor? FIGURE 7-53 %S4

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.1MCQ: The Ohms law for the magnetic circuit states that the net magnetomotive force (mmf) equals the...

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Concept explainers

Dielectric Breakdown

A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.

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What is the speed of the conductor?

21. A 20 cm long conductor is moving upward between the poles of a magnet as shown in Figure
7-53. The pole faces are 8.5 cm on each side and the flux is 1.24 mWb. The motion produces
an induced voltage across the conductor of 44 mV. What is the speed of the conductor?
FIGURE 7-53
%S4

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