Ampere 4. Who discovered that a current-carrying conductor would move when placed in a magnetic field? A. Michael Faraday B. Andre Ampere C. Hans Christian Oersted D. Gustav Robert Kirchhoff 5. Who discovered the most important electrical effects which is the magnetic effect? A. Hans Christian Oersted B. Sir Charles Wheatstone C. Georg Ohm D. James Clerk Maxwell 6. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying conductors
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superconductors. In 1933‚ Walter Meissner and Robert Ochsenfeld discovered a magnetic phenomenon that showed that superconductors are not just perfect conductors. Figure 3 illustrates a thought experiment that highlights this difference. Imagine that both the ideal conductor and superconductor are above their critical temperature‚ Tc. That is‚ they both are in a normal conducting state and have electrical resistance. A magnetic field‚ Ba‚ is then applied. This results in the field penetrating both materials
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FUSE THEORY The energy conversion process is carried out with the help of magnetic fields. These conversion processes also result in losses to the machine. Types of Losses The losses in a three phase induction machine are broadly classified into the following types 1) Magnetic losses 2) Electrical Losses 3) Mechanical Losses Magnetic losses The presence of rotating magnetic field in the stator core results in the magnetic losses. Stator core is made up of silicon steel or iron stampings‚ these losses
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ACKNOWLEDGEMENT It gives us great pleasure when a certain task is accomplished with great zeal and enthusiasm. We would like to extend our heartfelt thanks and deep sense of gratitude to all those who helped us in completing this project. First and foremost‚ we feel greatly indebted to Mr. D. M. SINGH and Mr. UBAID AHMAD KHAN‚ from the core of our heart for their constant support and valuable guidance time to time‚ because they encouraged and
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AS Level Physics: Terms & Definitions:- Measurement Random errors are errors of measurements that result in a scatter of readings about a mean value. Systematic errors are errors of measurement which occur according to some fixed patterns such that they consistently give out an over-estimation or under-estimation of the true value. Accuracy is a measure of how close the results of an experiment agree with the true value. Precision is a measure of how close the results of an experiment
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hysteresis losses at various frequencies and flux densities utilizing the Epstein Core Loss Testing equipment. However‚ due to technical difficulties encountered when using the watt-meters‚ and time constraints‚ we were unable to finish the experiment. Our professor acknowledging the fact that it was not our fault changed the objective of the experiment to the following: * To experimentally determine the inductance value of an inductor with and without a magnetic core. * To experimentally determine
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nonmagnetic and and is placed in a uniform magnetic field of magnitude B0 . The coil sides are of radius R and are uniformly spaced around the rotor surface. The first coil carrying a current I1 and second coil carrying a current I2 . Assuming that the rotor is 0.30 m long‚ R=0.13 m‚ and B0 = 0.85 T‚ find the Θ directed torque as a function of rotor position α for (a) I1 =0A and I2 =5A‚ (b)I1 =5A and I2 =0A‚ and (c)I1 =8A and I2 =8A. Uniform magnetic field‚ B 0y r θ Ι2 Ι1 R α
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of Magnets Objects having magnetic field is called as magnets. Normally magnets are of two types- Permanent magnets and Electro magnets. Permanent magnets are those magnets which occur in nature and do not depend upon external source for their magnetic field. On the other hand electromagnets are those magnets which use electric current to generate magnetic field. Classification of Magnets There are different types of magnets with different physical and magnetic properties and strength. These
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coil is placed in varying magnetic field‚ an emf is induced in the coil. Synchronous Generator consists of two main windings‚ the armature winding and the field winding. The armature winding is on the stator and the field winding is on the rotor. For a three phase generator‚ the windings of each phase of the armature are displaces by 120 degrees from each other around the inside periphery. The field winding is a coil which carries dc current and hence produces constant magnetic field. Besides the armature
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relative motion between conducting wires and magnetic lines of force. ❖ Electric motor is in operation when it is supplied with electrical energy and develops torque‚ that is‚ a tendency to produce rotation. ❖ In DC generator‚ the armature winding is mechanically rotated through the stationary magnetic fields created by the electromagnets or permanent magnets. ❖ In AC generator‚ the electromagnets or permanent magnets and their accompanying magnetic fields are rotated with respect to the
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