Phase Motors

Some articles on phase, phase motors, motors, motor, phases:

Electric Rail Transport - History - Introduction of Alternating Current
... In 1891, Brown had demonstrated long-distance power transmission, using three-phase AC, between a hydro-electric plant at Lauffen am Neckar and ... on steam-electric 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 ... However, they were much larger than the DC motors of the time and could not be mounted in underfloor bogies they could only be carried within locomotive bodies ...
Induction Motor - Construction
... The stator of an induction motor consists of poles carrying supply current to induce a magnetic field that penetrates the rotor ... Induction motors are most commonly run on single-phase or three-phase power, but two-phase motors exist in theory, induction motors can have any number of phases ... Many single-phase motors having two windings can be viewed as two-phase motors, since a capacitor is used to generate a second power phase 90 degrees from the ...
Rotary Phase Converter - Use of RPCs - General
... RPCs may be used anywhere three-phase devices need to be used, but only single phase power is available ... Three-phase motors cannot start on single phase power without a device to generate three-phase power ... Since prices (and quality) of used three-phase motors are usually more favorable than those of their single-phase counterparts, demand exists for phase converters ...
Voltage Optimisation - Energy Savings
... a mixture of loads including 7% fluorescent lighting, 0.5% incandescent lighting, 12.5% three phase air conditioners, 5% motors, 22.5% small 3-phase motors, 52.5% large 3-phase motors ... partly high-frequency fluorescent lighting (no saving), higher motor efficiencies (so less waste to save) ... would not have the large number of small single phase motors for air conditioning ...

Famous quotes containing the words motors and/or phase:

    When General Motors has to go to the bathroom ten times a day, the whole country’s ready to let go. You heard of that market crash in ‘29? I predicted that.... I was nursing a director of General Motors. Kidney ailment, they said; nerves, I said. Then I asked myself, “What’s General Motors got to be nervous about?” “Overproduction,” I says. “Collapse.”
    John Michael Hayes (b. 1919)

    It no longer makes sense to speak of “feeding problems” or “sleep problems” or “negative behavior” is if they were distinct categories, but to speak of “problems of development” and to search for the meaning of feeding and sleep disturbances or behavior disorders in the developmental phase which has produced them.
    Selma H. Fraiberg (20th century)