paper of ECE(basic electronics and electrical) Name: aalok mallik Reg no:11008765 Sec:Rk6002 Roll no:B55 .contents 1.History 2.Classification 3.Introduction of magnetic circuit 4.Concept 5.Analogies 6.Laws of magnetic circuit 7.Application 8.Referenece Concept and analogies of magnetic circuit HISTORY As with all great discoveries the history of magnets is very colorful and interesting too. The Shepherd Magnes The most popular legend accounting for
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27 Magnetic Field and Magnetic Forces J. Manuel Physics 72 1st Sem AY13-14 1 27 Fundamental nature of Magnetism Magnetism Magnetic Field Magnetic Field Lines and Magnetic Flux Motion of Charged Particles in Magnetic Field Magnetic Force on a Current-Carrying Conductor Force and Torque on a Current Loop Interaction of moving electric charges Magnetic forces arise in two stages: 1. Moving charge or a collection of moving charges produces a magnetic field. 2. Current or moving
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.INTRODUCTION Magnetic levitation is the latest in transportation technology and has been the interest of many countries around the world. The idea has been around since 1904 when Robert Goddard‚ an American Rocket scientist‚ created a theory that trains could be lifted off the tracks by the use of electromagnetic rails. Many assumptions and ideas were brought about throughout the following years‚ but it was not until the 1970’s that Japan and Germany showed interest in
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Ampere’s Law The line integral of the magnetic flux around a closed curve is proportional to the algebraic sum of electric currents flowing through that closed curve; or‚ in differential form curl B = J. This was later modified to add a second term when it was incorporated into Maxwell’s equations. Archimedes’ Principle A body that is submerged in a fluid is buoyed up by a force equal in magnitude to the weight of the fluid that is displaced‚ and directed upward along a line through the center
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Advantages 8 References 9 Magnetic Abrasive Finishing (MAF) Process Harry P. Coats first patented MAF in 1938. Although US originate this idea‚ most of later period development is done by USSR + Bulgaria. Japanese explore the technology for polishing purpose. Other countries in this field are: India‚ CIS‚ England‚ France‚ and Germany etc. Process details: • In MAP‚ w/p is kept between the two magnets & the air gap in-between the w/p & the magnet is filled with Magnetic Abrasive Particles (MAPs)
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a magnetic field is immediately brought into existence in the space surrounding the conductor. It can be said that when electrons are in motion‚ they produce a magnetic field. The converse of this is also true i.e. when a magnetic field embracing a conductor moves relative to the conductor‚ it produces a flow of electrons in the conductor. This phenomenon whereby an e.m.f. and hence current (i.e. flow of electrons) is induced in any conductor which is cut across or is cut by a magnetic flux is known
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octacyanomolybdate(IV) anions‚ Mo(CN)84-‚ of approximate dodecahedral‚ D2d‚ and square antiprismatic‚ D4d‚ symmetry. The sensitivity of the Mo magnetic shielding (σ) and electric field gradient (EFG) tensors to small changes in the local structure of these anions allows the approximate D2d and D4d Mo(CN)84- anions to be readily distinguished. The use of high applied magnetic fields‚ 11.75‚ 17.63 and 21.1 T‚ amplifies the overall sensitivity of the NMR experiment and enables more accurate characterization
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How do you know? The atoms in ferromagnetic materials like to align their magnetic dipoles with the external field. 3. Test copper‚ wood‚ glass‚ and iron. Which ones are ferromagnetic? Only the iron is ferromagnetic |Activity A: |Get the Gizmo ready: |[pic] | | |Check that the Magnetic forces tab is selected. |
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Electromagnet (Simple Features and Uses) An Investigatory Project Presented to Basic Education Department University of Perpetual Help GMA In Partial Fulfilment for The Requirements in Physics By: Anjanette L. Pascual Coleen Rose S. Saturnino Veverley Jayris M. Ochavo February 26‚ 2010 Mr. Lemuel F. Valdez Teacher Table of Contents I. Introduction A. Scope and Delimitation II. Statement of the Problem III. Definition of Terms IV. Related Studies
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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A floating leaf oscillates up and down two complete cycles in one second as a water wave passes by. The wave’s wavelength is 10 meters. What is the wave’s speed? A) 2 m/s B) 40 m/s C) 10 m/s D) 20 m/s E) more than 40 m/s 2) The Doppler effect is characteristic of A) light waves. B) sound waves. C) water waves. D) all of the above choices E) none
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