symmetrical polyphase system of electrical current

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• Polyphase system — A polyphase system is a means of distributing alternating current electrical power. Polyphase systems have three or more energized electrical conductors carrying alternating currents with a definite time offset between the voltage waves in each… …   Wikipedia

• AC power plugs and sockets — See also: Industrial and multiphase power plugs and sockets Plugs and sockets may sometimes combine male and female contacts, but t …   Wikipedia

• Three-phase — This article deals with the basic mathematics and principles of three phase electricity. For information on where, how and why three phase is used, see three phase electric power. In electrical engineering, three phase electric power systems have …   Wikipedia

• Two-phase electric power — Two phase electrical power was an early 20th century polyphase alternating current electric power distribution system. Two circuits were used, with voltage phases differing by 90 degrees. Usually circuits used four wires, two for each phase. Less …   Wikipedia

• Three-phase electric power — This article deals with where, how and why three phase is used. For information on the basic mathematics and principles of three phase, see three phase. Three phase electric power is a common method of alternating current electric power… …   Wikipedia

• Charles Legeyt Fortescue — (1876–1936) was an electrical engineer. He was born in York Factory, in what is now Manitoba where the Hayes River enters Hudson Bay. He was the son of a Hudson s Bay Company fur trading factor and was among the first graduates of the Queen s… …   Wikipedia

• Elliott Cresson Medal — given to Emile Berliner in 1913 Presented by Franklin Institute Country US …   Wikipedia

• IEC 60320 — IEC connector redirects here. For other uses, see IEC connector (disambiguation). IEC 60320 is a set of international standards specifying non locking electrical power couplers for the connection of power supply cords to electrical appliance up… …   Wikipedia

• Phasor (sine waves) — In physics and engineering, a phase vector ( phasor ) is a representation of a sine wave whose amplitude (A), phase (θ), and frequency (ω) are time invariant. It is a subset of a more general concept called analytic representation. Phasors reduce …   Wikipedia