Faraday’s Law of Electromagnetic induction where whenever a conductor cuts magnetic flux‚ dynamically induced electromotive force is produced‚ and this causes current to flow if the conductor/conductors is closed. The direction of induced current is given by Fleming’s right hand rule. A DC generator consists of these vital parts: o Yoke- It is the outer frame of a DC and it is made up of cast iron or steel. It carries the magnetic flux produced by field
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Section 7: Energy Efficiency www.leonardo-energy.org February 2007 Power Quality & Utilisation Guide Induction Heating Jean Callebaut‚ Laborelec 1 2 Introduction.................................................................................................... 2 Physical principles ....................................................................................... 2 2.1 2.2 2.3 Electromagnetic induction ..............................................................................
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and adaptive function and the Control circuit: on as one integrated unit Actuators may be called upon to change shape‚ position‚ natural frequency‚ or mechanical characteristics in response to changes in temperature‚ electric fields‚ and/or magnetic fields. Usually‚ four types of materials are commonly used for actuators: * shape memory alloys‚ * piezoelectric ceramics‚ * magnetostrictive materials‚ * and electrorheological/magnetorheological fluids. Shape memory alloys
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And Inductors. These Three Elements Are Used To Define The Four Fundamental Circuit Variables Which Are Electric Current‚ Voltage‚ Charge And Magnetic Flux. Resistors Are Used To Relate Current To Voltage‚ Capacitors To Relate Voltage To Charge‚ And Inductors To Relate Current To Magnetic Flux‚ But There Was No Element Which Could Relate Charge To Magnetic Flux. To Overcome This Missing Link‚ Scientists Came Up With A New Element Called Memristor. These Memristor Has The Properties Of Both
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magnetism? When two pieces of iron are attracted to each other by physical means or electrical means. 2. Torque is A. Strength that a motor produces by turning. 3. A magnetic field is D. All the above. 4. True or False: A permanent magnet is a piece of material that has been magnetized and can hold its magnetic strength for a reasonable length of time. True. 5. How is an electromagnet produced? Through electricity. 6. Which of the following produces the best electromagnet
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amount of noise. Such traits were the reason maglev trains should be competitive with airlines. Then again the extremely great prices and economic cost (In short term) did not let much creation around the world and limited it to one line in Shanghai. (Magnetic levitation train - Definition) Figure 2 (Electromagnetic Suspension) Figure 2 (Electromagnetic Suspension) Maglev trains mostly work on the different techniques and main principles of physics and magnetism. The first would be
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The electoral fraud issue on last 2004 election has proven an obvious breach in the national security. The tape evidence presented by Samuel Ong‚ former National Bureau of Investigation (NBI) deputy director for intelligence‚ contained a conversation between the former President Arroyo and Commissioner Virgilio Garcillano. Having analyzed the content of the said conversation‚ proven and admitted by the former president that the voice was hers‚ somehow confirmed the point of manipulation of the
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answer: d In a magnetic circuit the magnetic field strength H is expressed in ampere turns/metre. H is calculated using the formula: a. H = I/nl b. H = nI/l c. H = Il/n d. H = nl/I answer: b The formula used to calculate the resistance (R) of a conductor‚ given its length (l)‚ cross sectional area a. and the constant of resistivity (p) a. R = pl/a b. R = a/pl c. R = pa/l d. R = al/p answer: b A simple alternator consists of a coil which is rotated in a permanent magnetic field. The emf
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current loop behaves like a magnetic dipole. The magnitude of the magnetic moment‚ associated with a current loop‚ equals the product of the area of the loop and the current flowing through it. Its direction is normal to the plane of the loop and is along the direction of advancement of a right handed screw rotated in the sense of current flow in the loop. It follows that for a current loop of area A‚ carrying an anticlockwise current of magnitude I‚ the equivalent magnetic moment is
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Physical Science Review Waves‚ Sound and Light Waves- What are Waves? 1. 1 .The substance that a move through is called a medium. 2. True or False: Particles are squeezed together during rarefactions. 3. True or False: Waves that require a medium through which to travel are called electromagnetic waves. 4. True or False: The matter in the medium moves perpendicular to a transverse wave. 5. What medium is often used to transfer computer information? Optic Fibers 6. 6 .A
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