- active volt-amperes
- ватты, активная мощность
English-Russian scientific dictionary. 2008.
active volt-amperes
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Volt-ampere — A volt ampere (VA) is the unit used for the apparent power in an electrical circuit, equal to the product of root mean square (RMS) voltage and RMS current.[1] In direct current (DC) circuits, this product is equal to the real power (active… … Wikipedia
Power factor — For other uses, see Power factor (pistol). The power factor of an AC electric power system is defined as the ratio of the real power flowing to the load over the apparent power in the circuit,[1][2] and is a dimensionless number between 0 and 1… … Wikipedia
AC power — This article deals with power in AC systems. See Mains electricity for information on utility supplied AC power. Usually hidden from the unaided eye, the blinking of (non incandescent) lighting powered by AC mains is revealed in this motion… … Wikipedia
Apparent power — The product of the voltage (in volts) and the current (in amperes). It comprises both active and reactive power. It is measured in volt amperes and often expressed in kilovolt amperes (kVA) or megavolt amperes (MVA). See Power, Reactive Power,… … Energy terms
Buck-boost transformer — A buck boost transformer is a type of autotransformer used to make small adjustments to the voltage applied to alternating current equipment. Buck boost connections are used in several places such as uninterruptible power supply (UPS) units for… … Wikipedia
VA — abbr. 1 US Veterans Administration. 2 Vicar Apostolic. 3 Vice Admiral. 4 US Virginia (in official postal use). 5 (in the UK) Order of Victoria and Albert. * * * noun 1. the United States federal department responsible for the interests of… … Useful english dictionary
Electric arc furnace — An electric arc furnace (EAF) is a furnace that heats charged material by means of an electric arc. Arc furnaces range in size from small units of approximately one ton capacity (used in foundries for producing cast iron products) up to about 400 … Wikipedia
watt — [ wat ] n. m. • 1881; du nom de l ingénieur J. Watt ♦ Unité de mesure de puissance mécanique ou électrique, de flux thermique et de flux d énergie rayonnante (symb. W), équivalant à un transfert d énergie de 1 joule en 1 seconde. ⇒aussi kilowatt … Encyclopédie Universelle
electricity — /i lek tris i tee, ee lek /, n. 1. See electric charge. 2. See electric current. 3. the science dealing with electric charges and currents. 4. a state or feeling of excitement, anticipation, tension, etc. [1640 50; ELECTRIC + ITY] * * *… … Universalium
Car battery — A car battery is a type of rechargeable battery that supplies electric energy to an automobile [ Horst Bauer Bosch Automotive Handbook 4th Edition Robert Bosch GmbH, Stuttgart 1996 ISBN 0 8376 0333 1, pages 803 807 ] . Usually this refers to an… … Wikipedia
MESURE - Mesures électriques et électroniques — Les mesures électriques et électroniques, grâce à l’apport des semiconducteurs, des méthodes numériques et des systèmes asservis, apparaissent à l’heure actuelle comme une technique clé dans le domaine des mesures en général. L’existence de… … Encyclopédie Universelle
