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The siemens (symbol: S) is the unit of electric conductance, electric susceptance, and electric admittance in the International System of Units (SI). Conductance, susceptance, and admittance are the reciprocals of resistance, reactance, and impedance respectively; hence one siemens is equal to the reciprocal of one ohm (Ω −1) and is also referred to as the mho.
Y is the complex admittance, measured in siemens; G is the real-valued conductance, measured in siemens; j is the imaginary unit (i.e. j 2 = −1); and; B is the real-valued susceptance, measured in siemens.
GE Power Conversion, formerly Converteam, is a French electrical engineering company and is a subsidiary of GE Vernova. GE Power Conversion's global headquarters is located in the Paris-Saclay research-intensive and business cluster , south of Paris , in the Île-de-France region.
GE GEVO-16, 16-cylinder engine used in locomotives, such as the GE ES59ACi, [6] GE ES58ACi, [6] GE ES57ACi Diesel Locomotives. HDL series [1] GE 7HDL-16, 16-cylinder engine used in only the GE AC6000CW [7] L250. GE L250 Series, 6- and 8-cylinder marine engines for propulsion and electric generator usage [8] PowerHaul series
The conversion between different SI units for one and the same physical quantity is always through a power of ten. This is why the SI (and metric systems more generally) are called decimal systems of measurement units. [10] The grouping formed by a prefix symbol attached to a unit symbol (e.g. ' km ', ' cm ') constitutes a new inseparable unit ...
GEnx on 747-8I prototype. As of 2016, the GEnx and the Rolls-Royce Trent 1000 were selected by Boeing following a run-off between the three big engine manufacturers. The GEnx uses some technology from the GE90 turbofan, [1] including swept composite fan blades and the 10-stage high-pressure compressor (HPC) featured in earlier variants of the engine.
* Note: two versions: one contained a 16-cylinder 7HDL, co-developed by GE and the German firm Deutz-MWM, rated at 6000 HP; the other a 16-cylinder 7FDL rated at 4390 HP. The units equipped with the 7FDL were a sub-version AC6000 "Convertible" and were produced to get the type into operation while the 7HDL was developed.
Development commenced with a 1953 US Navy requirement for a helicopter turboshaft to weigh under 400 lb (180 kg) while delivering 800 hp (600 kW). The engine General Electric eventually built weighed only 250 lb (110 kg) and delivered 1,050 hp (780 kW) and was soon ordered into production.