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Long distance HVDC lines carrying hydroelectricity from Canada's Nelson River to this converter station where it is converted to AC for use in southern Manitoba's grid. A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. [1]
Closer to the customer, a distribution transformer steps the primary distribution power down to a low-voltage secondary circuit, usually 120/240 V in the US for residential customers. The power comes to the customer via a service drop and an electricity meter. The final circuit in an urban system may be less than 15 metres (50 ft) but may be ...
Electrical engineering is divided into a wide range of different fields, including computer engineering, systems engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, instrumentation, photovoltaic cells, electronics, and optics and photonics.
The base-2 numeral system is a positional notation with a radix of 2.Each digit is referred to as a bit, or binary digit.Because of its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used by almost all modern computers and computer-based devices, as a preferred system of use, over various other human techniques of communication, because ...
Computer security compromised by hardware failure is a branch of computer security applied to hardware. The objective of computer security includes protection of information and property from theft, corruption, or natural disaster, while allowing the information and property to remain accessible and productive to its intended users. [1]
A Cessna 182 Skylane, flying from Hawthorne Airport in Hawthorne, California, to Sky Harbor, hit high-tension power lines east of the airport and crashed at 10:48 pm in the Salt River bed while attempting to land on Runway 26R, knocking out power to the airport and killing all three passengers on board. [118] March 13, 1990 N/A
Classes 220 (left) and 221 (right) showing the differing bogie designs. The Class 221 units were produced as five- or four-coach sets. Each coach is equipped with a Cummins QSK19 diesel engine producing 560 kW (750 hp) at 1,800 rpm, [10] driving an electrical generator which powers two motors, each driving one (inner) axle per bogie via a cardan shaft and final drive.