5: Magnetism Magnetic Fields 1. An electron gun fires electrons into a magnetic field directed straight downward. Find the direction of the force exerted by the field on an electron for each of the following directions of the electron’s velocity: (a) horizontal and due north; (b) horizontal and 30° west of north; (c) due north‚ but at 30° below the horizontal; (d) straight upward. 2. (a) Find the direction of the force on a proton moving through the magnetic fields in Figure 1‚ as shown
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Magnetic particle inspection (MPI) - Is a non-destructive testing (NDT) process for detecting surface and slightly subsurface discontinuities in ferroelectric materials such as iron‚ nickel‚ cobalt‚ and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs
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a rather low intensity magnetic field. Alnico magnet alloy is now mainly used in applications where the magnet will be exposed to elevated temperatures. • Rare Earth Magnets Samarium Cobalt (SmCo) and Neodymium Iron Boron (NdFeB) are called Rare Earth because Neodymium and Samarium are found in the rare earth elements on the periodic table. Both Samarium Cobalt and Neodymium magnet alloys are powdered metals which are compacted in the presence of a strong magnetic field and are then sintered.
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Journal of Magnetism and Magnetic Materials 65 (1987) 71-75 North-Holland‚ Amsterdam 71 LOW-FIELD MAGNETIC H Y S T E R E S I S IN IRON‚ COBALT‚ NICKEL AND S T E E L G.H.J. W A N T E N A A R ‚ S.J. CAMPBELL‚ D.H. C H A P L I N and G.V.H. WILSON Department of Physics *‚ University College‚ University of New South Wales‚ A ustrafian Defence Force Academy‚ Campbell A CT 2600‚ A ustrafia Received 15 August 1986 Spheroidal samples of high purity iron‚ cobalt and nickel and carbon steel have
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Lab #11 Faraday’s Law of induction Purpose: To prove Faraday’s Law of Induction using an oscillating wand which swings through a magnetic field. In addition‚ we studied the conversion of mechanical energy to electrical energy. Questions: 1. What are the possible errors in this experiment? There are a variety of sources of error which may have affected the results of this experiment. There could have been an error in the setup of the Rotary Motion setup or its setup within the Logger Pro program
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JOURNAL‚ VOL. 6‚ NO. 3‚ JUNE 2006 631 Magnetic Sensors and Their Applications James Lenz and Alan S. Edelstein Abstract—Magnetic sensors can be classified according to whether they measure the total magnetic field or the vector components of the magnetic field. The techniques used to produce both types of magnetic sensors encompass many aspects of physics and electronics. Here‚ we describe and compare most of the common technologies used for magnetic field sensing. These include search coil‚ fluxgate
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according to the magnetic source‚ the magnetic separator can be divided to permanent magnetic separator and electromagnetic separator. 2‚ according to the strength of magnetic field‚ it can be divided into: (1) Weak magnetic separator‚ the surface magnetic strength HO=72-136 KA/m‚ magnetic force HgradH= (2.5-5.0) 1011 A/m. (2) Middle magnetic separator‚ the surface magnetic strength HO=160-480 KA/m; (3) Strong magnetic separator‚ the surface magnetic strength HO=480-1600 KA/m‚ magnetic force HgradH=
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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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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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Prediction System of Magnetic Abrasive Finishing (MAF) On the Internal Surface of Cylindrical Tube Ching-Lien Hung1+‚ Wei-Liang Ku2‚ Lieh-Dai Yang3 Submitted to Materials and Manufacturing Processes March‚ 2010 This paper has not been published elsewhere nor has it been submitted for publication elsewhere. 1+‚ 3 Department of Industrial Engineering and Management‚ Nan Kai Universtiy of Technology‚ Nan Tou‚ Taiwan‚ R.O.C. 2 Department of Information Management‚ Nan Kai Universtiy
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