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LOCO SHED GOMOH

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ACKNOWLEDGEMENT I would like to express my sincere grateful and profound gratitude to LOCO SHED ,GOMOH for providing an opportunity to undergo Vocational Training of 04 weeks in “ELECTRIC LOCO SHED, Gomoh, Jharkhand’’. I bear immense pleasure in expressing my gratitude and thanks to all the Employees of respective shops for their honest teaching, practical demonstration, guidance and suggestion in respective sections. Furthermore, I would like to acknowledge with much appreciation the crucial role of staffs, who gave us the permission to use all required equipment and the necessary materials during our training period. CONTENTS 1. Introduction 2. Locomotives 3. Syntaxs used in Loco 4. Components of Loco 5. Different Sections of Loco 6. Brake Rigging 7. Pantograph 8. Traction Converter 9. Working of Loco 10. Conclusion INTRODUCTION  The ISO-9001-2008 certified Electric Loco Shed, East Central Railway, Gomoh situated in Gomoh. ELECT...
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CAPACITOR

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CAPACITANCE:- 5.1. Capacitor A capacitor essentially consists of two conducting surfaces separately,vy a layer of an insulating medium called dielectric. The conducting surfaces may be in the formof eithercircular (or rectangular) plates or be of spherical or cylindrical shape. The purpose of a capacitor . is. to store electrical energy by electrostatic stress in the dielectric (the word 'condenser' is a misnomer since a capacitor does not 'condense' electricity as such, it merely stores it).BA parallel-plate capacitor is shown in Fig. 5.1. One plate isjoined to the positive end of the supply and the other to the negative end or is earthed. It is experimentally found that in the presence of an earthed plate B, plate A is capable of withholding more charge than when B is not there. When such a capacitor is put across a battery, ~ere is a momentary flow of electrons from A to B. As negatively-charged electrons are withdrawn from A, it becomes positive and as ...
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WORK ENERGY POWER with logic words for development to your mind

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              WORK POWER AND ENERGY ____________________________________________ 3.1. Effect of Electric Current. It is a matter of common experience that a conductor, when carrying current, becomes hot after some time. As explained earlier, an electric current is just a directed flow or drift of electrons through a substance. The moving electrons as the pass through molecules of atoms of that sub- stance, collide with other electrons. This electronic collision results in the production of heat. This explains why passage of current is always accompanied by generation of heat. 3.2 Joules Law of Electric Heating                 The amount of work required to maintain a current of I amperes through a resistance of R ohm for t second is W.D. = PRt joules = VIt joules (": R = VI!) = Wt joules (": W = VI) = V t lR joules (": I = VIR) This work is converted into heat and is dissipated away. The amount of hea...
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Electrical current and ohm's low

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1.ELECTRICAL CURRENT AND OHM'S LAW 1.1 Electron Drift Velocity Suppose that in a conductor, the number of free electrons available per m3 of the conductor material is n and let their axial drift velocity be v metres/second. In time dt, distance travelled would be v x dt. If A.is area of cross-section of the conductor, then the volume is and the number of electrons contained in this volume is vA dt. Obviously, all these electrons will cross the conductor cross-section in time dt. If e is the charge of each electron, then total charge which crosses the section in time dt is d q =  dt. Since current is the rate of flow of charge, it is given as = - = :.  dt . I = dt dt Current density J = ilA =ne v ampere l metre 2 Assuming a normal current density J =1.55 X 106 Alm 2 , n = 1029for a copper conductor 6 -19 and e =1. x 10 coulomb, we get 1.55 x 106 = 1029x 1.6 X 10-19x v :. v = 9.7 X 10-5m/s = 0.58 cm/min. It is seen that contrary to the common but mistaken view, the electron drif...
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A.C fundamentals

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                                   A.C FUNDAMENTALS              * Friend's law of electromagnetic induction      * first law:-  sates that whenever there is changed  in magnetic flux passing through or coil. A voltage is induced  in the coil.   * Second law:-  It states that the magnetic of induced voltage is proportional to the rate of change of flux passing i.e, e directly proportional to Q/ dt => e= - d/dt. Negative sing indicator that direct of induce voltage is in such way that it opposes the cause which has induced it. Then is also known as lenz law. *  Concept of generation of alternative voltage voltage. Diagram:- (figure.1)                                (figure.1) • an alternative voltage can be gen...
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