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Odysseus and Gawain Temptations Essay

Sir Gawain is a respectable knight of the Round Table who confronted the results of acknowledging a demand from a â€Å"Green Knightâ...

Saturday, March 14, 2020

Trains essays

Trains essays Maglev trains may very well be the future of transportation. They are currently being developed in Germany and Japan, and other places around the world, like California in the United States of America, are planning whether getting a maglev train system would be worthwhile. Maglev trains are the fastest, most sensible form of ground transport available at this time, and with the demands of the transport system growing every year, they are bound to become a valuable part of the worlds transportation system. Maglev trains basically work by the simple principle that opposite poles attract, and similar poles repel, but in reality it is much more complex than this. Maglev trains work by gliding over the rails instead of rolling on them, and so do not create any friction on the rails while they are moving. Unlike all other forms of transportation, the system which causes the movement is not in the vehicle itself, but is in the guide way, or rails, beneath the train. These guide ways contain iron stator (a stator is the coil while the magnets is the rotor) packages containing 3-phase cables, and the vehicle is able to levitate when the guide ways attract the support magnets on the train. The train is kept on the rails by lateral guidance magnets which hold the vehicle to the guide way. This system may be compared to an electric motor where the stator has been flattened along the guide way. The train is able to accelerate when the propulsion system is switched on using the cable windi ng. The guide way is able to pull the train along because of the electromagnetic travelling field that is on while the propulsion system is running. The support system of the train is therefore able to become a rotor', which along with the stator, completes the motor'. (MVP Versuchs- un planungsgesellschaft fur Magnerbahnysteme m.b.H., 1999) Because the active part of the propulsion unit is built into the guide way as opp...

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