over an electrical circuit. A coil of wire with a current running through it generates an electromagnetic field aligned with the center of the coil. The direction and magnitude of the magnetic field produced by the coil can be changed with the direction and magnitude of the current flowing through it. A simple DC motor has a stationary set of magnets in the stator and an armature with coils around a soft iron core that concentrates the magnetic field. The ends of the coils are connected to a commutator
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it is about 2-inches away from being completely full. In order to lower the temperature of the water‚ a few ice cubes are added. Once the ice is completely melted‚ the calorimeter is cautiously placed into the apparatus to ensure that they heating-coil and temperature probe do not touch. The voltage is set to a constant amount of approximately 6-volts. The voltmeter is wired directly to the
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transformer from magnet wire and an iron rod. Remember that magnet wire‚ although it looks bare‚ actually has an enamel coating on the outside that serves as insulation. Enamel is used on magnet wire so that the insulation is very thin and the coil of wire can be compacted into a smaller space‚ thus enhancing the inductive phenomenon. small gauge wire and cause it to melt‚ which is a very good example of how a fuse works‚ but could cause you to get an electrical shock‚ or perhaps
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and produces 25 horsepower‚the KW meter reading will increase by: Ans: 18.65 Kw 5. Which of the following formulas listed is correct for determining the power? Ans: P=(E)(E)/R 6. A magnetic blow out coil in a DC motor controller contactor functions to: Ans: Prevent contact melting 7. The device most commonly utilizing the principle of electromagnetic induction is: Ans: Transformer 8. A current at which a magnetic-type
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flux are met. This machine is called a unidirectional (dynamo).It consists of the same basic elements as a simple AC generator like the multi-turn coil rotating uniformly in a magnetic field .The output of which is a series of emf pulses‚ all in the same positive direction resulting in an average EMF developed across the load. Increasing the number of coils thereby smoothen the output providing more pulses at each revolution. The generated voltage depends upon the number of poles and armature winding
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This Document is provided by www.manabadi.com for FREE for the benefit of Intermediate students. Copying and redistribution by any company/ website is illegal and Manabadi.com has all rights to claim on such type of website or company. Physics – II year – Model question paper – 2013 – 2014 Section – A I Very short answer questions 10× 2 = 20 M Answer all questions‚ each carries two marks. (1) What are beats? (2)Can there be electric intensity at a point with zero electric potential
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alternator maximum output. Alternator The plans describe how to build a permanent magnet alternator. The alternator can be wired for 12‚ 24 or 48-volt battery charging. Essentially this choice only affects the size of wire and the number of turns per coil. But the tower wiring for the 12-volt version will be much heavier than the others. And the stator for the small machine is different in thickness. The alternator design is integrated into a simple tower-top mounting arrangement (called a ’yaw
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A MIM/Coaxial Stub-Line CRLH Zeroth-Order Series-Mode Resonator used as an RF Coil Element for 7-Tesla Magnetic Resonance Imaging Andreas Rennings1 ‚ Jan Taro Svejda1 ‚ Simon Otto2 ‚ Klaus Solbach2 ‚ and Daniel Erni1 General and Theoretical Electrical Engineering (ATE)‚ 2 High Frequency Engineering (HFT)‚ Faculty of Engineering‚ University of Duisburg-Essen‚ and 1 CENIDE – Center for Nanointegration Duisburg Essen‚ D-47048 Duisburg‚ Germany 1 Abstract—A novel MIM/coaxial-stub composite right/lefthanded
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UNIVERSAL AXLE COUNTER SYTEM 1.0 INTRODUCTION : 1. The track circuits are considered as the vital component of signaling system to achieve safety of train operations. Various Accident Enquiry Committees have recommended to bring more and more tracks under track circuiting to safeguard against reception of trains on occupied lines. The track circuiting could not achieved desired progress die to virtual scarcity of wooden sleepers‚ prohibitive costs and environmental consciousness in the country
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Continuous stirred tank reactor models Dr. M.J. Willis Dept. of Chemical and Process Engineering‚ University of Newcastle. e-mail: Tel. Written: Updated: mark.willis@ncl.ac.uk 0191 222 7242 November‚ 1998 April‚ 1999; March‚ 2000 Aims and objectives Chemical reactors are the most influential and therefore important units that a chemical engineer will encounter. To ensure the successful operation of a continuous stirred tank reactor (CSTR) it is necessary to understand their dynamic characteristics
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