the University of Lyon just one year later. In 1809‚ Andre Ampere was appointed professor of mathematics at the Polytechnic school in Paris. He was admitted as a member of the Institute in 1814 and in 1820‚ after H.C. Orsted’s discovery that a magnetic needle is acted on by a voltaic current‚ Andre sent a paper of his own to the Academy that was much more detailed. He didn’t wait‚ on September 18‚ 1820‚ the very same day that he sent his paper‚ he presented a demonstration to the Academy that parallel
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turns within the permanent magnets‚ but this arrangement is not necessary. History and background | At the most basic level‚ electric motors exist to convert electrical energy into mechanical energy. This is done by way of two interacting magnetic fields -- one stationary‚ and another attached to a part that can move. A number of types of electric motors exist‚ but most BEAMbots use DC motors1 in some form or another. DC motors have the potential for very high torque capabilities (although
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and Savart law‚ differential equations of magnetostatics and Ampere’s law. Vector potential and its properties. Magnetic fields of a localized current distribution‚ magnetic moment‚ Force and torque on and energy of a localized current distribution in an external magnetic induction‚ macroscopic equations‚ boundary conditions on B and H. Magnetic scalar potential. Energy in magnetic field. 12hr Unit –IV Electrodynamics : Faraday law of induction
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difference the potential energy is then converted to kinetic energy. When an electron is placed into a magnetic field it experiences a force that is perpendicular to the velocity of the electron and the magnetic field. This causes the electron to move in the pattern of a circle‚ and centripetal force is generated. This tells one that by unit analysis the e/m ratio can be determined by the voltage‚ magnetic field and the radius of the circle that the electron is traveling in. Experimental Procedure This
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ANNA UNIVERSITY CHENNAI: CHENNAI – 600 025 B.E DEGREE PROGRAMME (3 - 8 SEMESTERS) ELECTRICAL AND ELECTRONICS ENGINEERING (Offered in Colleges affiliated to Anna University) CURRICULUM AND SYLLABUS – REGULATIONS – 2004 SEMESTER III (Applicable to the students admitted from the Academic year 2006 – 2007 onwards) |THEORY |L |T |P |M | |1. |MA 1201
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piece of soft iron attached to each end of the magnet. The iron is also magnetized. The iron ends of the magnet serve to direct the magnetic field in the direction of a small iron cylinder that is positioned between the ends (or poles) of the magnet. Taking advantage of the soft iron’s characteristic to become highly magnetized‚ the iron cylinder focuses the magnetic field. The Electrical Current Surrounding the cylinder is a rectangular frame with a copper wire coil‚ with the ends of the wire attached
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Through research I discovered that there are animals that have senses that by far exceed our five human senses. One of the animals would be the bat that we spoke about in class. Bats avoid obstacles and nab insects on the wing by emitting ultrasonic squeaks and interpreting the echo the sound waves make after bouncing off objects in the environment. This is called "echolocation‚" but bats aren’t the only animals that use echolocation. Dolphins also use echolocation to navigate themselves in murky
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GENERAL INSTRUCTIONS: A: The numerical are based on application of theory content. Attempt them in your physics notebook as practice assignment. B: Do all questions in sequence. UNIT –I: ELECTROSTATICS 1. Three identical charges each +q are placed at the corners of an equilateral triangle of side d cm. Calculate the force on a +ve charge +2q at the centroid of the triangle. 2. Force acting on a charged particle kept between the pair of plates‚ having equal and opposite charge‚ is F. If
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10.2 Properties of Cathode rays Aim: to determine some of the properties of the rays which come from the cathode of a discharge tube. Equipment * Two power packs * Two plug-plug leads * One pair of magnets * Induction coil * Four plug-clip leads * Discharge tubes (Maltese cross‚ electric plates‚ rotating wheel‚ screen display) Theory: This experiment is designed to show you the properties of cathode rays as discovered by Sir William Crookes. Method: 1. Connect the
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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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