لينک پرداخت و دانلود *پايين مطلب * فرمت فايل :Word ( قابل ويرايش و آماده پرينت ) تعداد صفحه۱۰ C motors Main article: AC motor In 1882, Nikola Tesla identified the rotating magnetic field principle, and pioneered the use of a rotary field of force to operate machines. He exploited the principle to design a unique two-phase induction motor in 1883. In 1885, Galileo Ferraris independently researched the concept. In 1888, Ferraris published his research in a paper to the Royal Academy of Sciences in Turin. Introduction of Tesla’s motor from 1888 onwards initiated what is sometimes referred to as the Second Industrial Revolution , making possible the efficient generation and long distance distribution of electrical energy using the alternating current transmission system, also of Tesla’s invention (1888).[1] Before the invention of the rotating magnetic field, motors operated by continually passing a conductor through a stationary magnetic field (as in homopolar motors ). …