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The International System of Units abbreviated SI from the French Le Système International d'Unités is the modern form of the metric system and is generally a. Because energy is defined via work, the SI unit of energy is the same as the unit of work – the joule J, named in honor of James Prescott Joule and his experiments on the mechanical equivalent of heat. In slightly more fundamental terms, 1 joule is equal to 1 newton metre and, in terms of SI base units. Kilovolt-amp kVA kVA is kilo-volt-ampere. kVA is a unit of apparent power, which is electrical power unit. 1 kilo-volt-ampere is equal to 1000 volt-ampere: 1kVA = 1000VA. 1 kilo-volt-ampere is equal to 1000 times 1 volt times 1 ampere: 1kVA = 1000⋅1V⋅1A. kVA to volt-amps calculation.

CGS unit of magnetic field strength is oersted, and SI unit is ampere/meter. Magnetisation defines the material's response- it is magnetic moment per unit volume of material. Flux density magnetic induction describes the resulting field in the material, which is. Back to the article index SI Prefixes and Symbols Used to Denote Powers of 10. Magnetic moment per unit volume. h. The designation “emu” is not a unit. i. Recognized under SI, even though based on the defition B = μ o HJ. See footnote c. j. μ r = μ/μ o = 1χ, all in SI. μ r is equal to Gaussian μ. k. BּH and μ o MּH have SI units J/m 3; MּH and BּH/4π have Gaussian units erg/cm 3. PER-UNIT AND BASE IMPEDANCE CALCULATOR. The following calculators compute various base and per unit quantities commonly used in the per unit system of analysis by power system engineers. Calculator-1. Known variables:. Per-Unit Impedance - Given kA Input Base Three Phase Power. Densityρ is the ratio of mass to volume and it is given by Density=Mass/Volume=m/v SI unit of mass and volume are kg and m^3 respectively. Density=kg/m^3.

Electrical units definitions Volt V. Decibel-watt or dBW is a unit of electric power, measured with logarithmic scale referenced to 1W. 10dBW = 10 ⋅ log 10 10W / 1W Farad F Farad is the unit of capacitance. It represents the amount of electric charge in coulombs that is stored per 1 volt. The coulomb is named after Charles-Augustin de Coulomb. As with every SI unit named for a person, its symbol starts with an upper case letter C, but when written in full it follows the rules for capitalisation of a common noun; i.e., "coulomb" becomes capitalised at the beginning of a sentence and in titles, but is otherwise in lower case. Other units outside the SI that are currently accepted for use with the SI by NIST are given in Table 7. These units, which are subject to future review, should be defined in relation to the SI in every document in which they are used; their continued use is not encouraged.