understanding of the more common Brushed DC Motor which is present in many household items. The brushed DC motor consists of a rotor (the part that rotates) containing several coils of wire. This is attached to the output shaft. The rotor is surrounded by a magnetic field (this is usually a permanent magnet‚ but can be an electro magnet). Electrical connection to the rotor is accomplished via a device called a commutator. A commutator is basically a conductive ring that rotates with the rotor shaft. This ring
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circuits a. Circuit diagrams b. Series and parallel circuits c. Action and use of circuit components d. Digital electronics 4.4 Dangers of electricity 4.5 Electromagnetic effects a. Electromagnetic induction b. a.c. generator c. Transformer d. The magnetic effect of a current e. Force on a current carrying conductor f. d.c. motor 4.6 Cathode-ray oscilloscopes a. Cathode rays b. Simple treatment of cathode-ray oscilloscope Atomic physics 5.1 Radioactivity a. Detection of radioactivity b. Characteristics
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In this assignment‚ we are assign to construct a 2 button type Ac motor control system. The 2 type button means that there are only 2 buttons which is the stop button and the forward button. The successful build the whole system‚ a few component are very critical in this system. Circuit breaker First is the circuit breaker. Circuit breaker is a switch which is designed to prevent damaging the circuit when there is over load or short circuit. But the circuit breaker works differently compare
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Mazer March 15‚ 2012 Conclusion: This experiment clearly demonstrated how Ampere’s Law relates the magnetic field to the current using the relationships stated in the formula B= μ0I2πr. This relationship allowed to the experiment to calculate the value of permeability of free space in order to verify the relationship that is outlined in Ampere’s Law. This lab also allowed us to measure magnetic field strength as a function of the distance measured perpendicularly from a long current-carrying wire
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superconductors. Current MRI’s use superconducting magnets to create a magnetic field in the body. Hydrogen atoms present in the body release it at a frequency that can be detected by computers. Then displayed to give an image of the human body. Another superconductor is the superconducting quantum interference (SQUID). It has the ability to detect a change in the magnetic field. The device is used to probe the id without the need of strong magnetic fields or MRIs. SQUID also allows the ability to look at the
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through which vary or alternating current (AC) is passed. 3. A varying current flowing in a test coil produces a varying electromagnetic field around the coil‚ As shown in this diagram Amperage * # of coils= strength of magnetic field 4. The electromagnetic field produced around the coils is directly proportional to the magnitude of applied current‚ rate of change in current or frequency and the coil parameters. 5. Coil parameters include: Inductance‚ diameter
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An Introduction to Engineering and Practices Laboratory Manual For Experiment E2 Magnetic Field Laboratory : Power and Clean Energy Design Laboratory Location: S2-B5c-02 School of Electrical and Electronics Engineering [EEE] Session 2014/2015 (For Safety reasons‚ student wearing slippers‚ sandals‚ or other loose footwear are NOT allowed to enter the laboratory) 1 FE1073-E2 MAGNETIC FIELD 1. OBJECTIVES When current exists in an infinitely long straight wire‚ a B field
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In physics‚ the term solenoid refers to a long‚ thin loop of wire‚ often wrapped around a metallic core‚ which produces a magnetic field when an electric current is passed through it. Solenoids are important because they can create controlled magnetic fields and can be used as electromagnets. The term solenoid refers specifically to a magnet designed to produce a uniform magnetic field in a volume of space (where some experiment might be carried out). In engineering‚ the term solenoid may also refer
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and bigger an issue. Therefore‚ it is only natural that demands for it are growing rapidly. To meet this demand‚ yet another form of transportation has been introduced: the Maglev train. Maglev‚ derived from the term magnetic levitation‚ is a method of propulsion that uses magnetic levitation to propel vehicles with electromagnets rather than with wheels‚ which causes friction and can wear out the rails. With maglev‚ a vehicle is levitated a short distance away from a guide way using magnets to create
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in the 1950’s from a group of Russian scientists including Andrei Sakharov and Igor Tamm) constructed with the shape of a torus (or dough-nut) in which a plasma is magnetically confined and heated in order to produce nuclear fusion reactions. The magnetic confinement of the plasma particles in the vacuum vessel torus is obtained through the combination of toroidal and poloidal fields produced by external coils (see fig.I.1) with the additional field produced by the electrical current flowing along the
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