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LOCO SHED GOMOH

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...

ZENER DIODE AND TRANSISTOR

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ZENER DIODE A zener diode is a special type of diode that is designed to operate in the reverse breakdown region. An ordinary diode operated in this region will usually be destroyed due to excessive current. This is not the case for the zener diodA zener diode is heavily doped to reduce the reverse breakdown voltage. This causes a very thin depletion layer As a result, a zener diode has a sharp reverse breakdown voltage Vz This is clear from the reverse characteristic of zener diode that the reverse characteristic drops in an almost vertical manner at reverse voltage Vz As the curve reveals, two things happen when V is reached: The diode current increases rapidly. (i) The reverse voltage Vz across the diode remains almost constant. In other words, the zener diode operated in this region will have a relatively constant voltage across it, regardless of the value of current through the device. This permits the zener diode to be used as a volage regulator For detailed discussio...