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The World's Largest Wind Turbine Generator

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Before go on to the list of the world's largest wind turbine generator let first know its definition and its purpose. What is wind turbine? the answer is a rotating machine which converts the kinetic energy in wind into mechanical energy. That's wind turbine but when we talk about windturbine generator its another story they become a generator when we convert from mechanical energy into electrical energy which mean we attach a generator to rotating part of a wind turbine. So let go to ahead the list for further discussion . Seven Plus Megawatts This turbine has a rotor diameter of 126 meters (413 feet). called a Enercon E-126. these have inverters instead of synchronous generators, that is to say, a separate controller that converts the wild AC generated into something the grid can use. This means the rotor can run at more optimum and varied speeds. http://www.metaefficient.com/news/new-record-worlds-largest-wind-turbine-7-megawatts.html 7.5 megawatt MBE turbine...
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Cheapest Automatic Door Closer !!

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This happened back in 2009, just months after joining my college as an Engineering student. I was visiting a senior in the men's hostel when I saw this creative invention. It was a mineral water bottle filled with water hanging from the top, on the backside of the door (inside the room). The weight of the bottle made the door to close every time after it was opened. Since it was a college hostel, people will be going in and out all the time. Some super lazy lad found this technique so that he doesn't have to get up all the time just to close the door. This was one of the most simple yet super innovative thing I have seen in my college life. I sure can say, this was far more innovative and useful than most of the final year projects. Simple, but effective right?
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