Phase Ac

Some articles on ac, phase ac, phase, phases:

25 K V 50 Hz - History
... He used 16 kV AC at 50 Hz, asynchronous traction, and an adjustable number of (motor) poles ... use DC series motors, which required the current to be converted from AC to DC and for that a rectifier is needed ... It was possible to use AC motors (and some railways did, with varying success), but they did not have an ideal characteristic for traction purposes ...
AC Motor - History
... Because AC's advantages in long distance high voltage transmission there were many inventors in the United States and Europe during the late 19th century trying to develop workable ... identified the rotating magnetic field principle and that of a two-phase AC system of currents to produce it ... itself.” In 1886, English engineer Elihu Thomson built an AC motor by expanding upon the induction-repulsion principle and his wattmeter ...
Electric Rail Transport - History - Introduction of Alternating Current
... The first practical AC electric locomotive was designed by Charles Brown, then working for Oerlikon, Zürich ... demonstrated long-distance power transmission, using three-phase AC, between a hydro-electric plant at Lauffen am Neckar and Frankfurt am Main West railway station, a distance of 280 km ... locomotive designs, had observed that three-phase motors had a higher power-to-weight ratio than DC motors and, because of the absence of a commutator, were simpler to ...
Multiple Overhead Lines
... some railways that used two or three overhead lines, usually to carry three-phase current to the trains ... Nowadays, three-phase AC current is used only on the Gornergrat Railway and Jungfraujoch Railway in Switzerland, the Petit train de la Rhune in France, and the Corcovado Rack Railway in Brazil ... conductors of the overhead lines are used for two different phases of the three-phase AC, while the rail was used for the third phase ...

Famous quotes containing the word phase:

    The Indians feel that each stage is crucial and that the child should be allowed to dwell in each for the appropriate period of time so that every aspect of his being can evolve, just as a plant evolves in the proper time and sequence of the seasons. Otherwise, the child never has a chance to master himself in any one phase of his life.
    Alan Quetone (20th century)