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общая лексика
вольтомметр
общая лексика
квар
киловар
реактивный киловольт-ампер
[vəult'æmpeə]
общая лексика
вольт-амперный
существительное
электротехника
вольт-ампер
A volt-ampere (SI symbol: V⋅A or V A, simplified as VA) is the unit for the apparent power in an electrical circuit. The apparent power equals the product of root mean square voltage (in volts) and root mean square current (in amperes). Volt-amperes are usually used for analyzing alternating current (AC) circuits. In direct current (DC) circuits, this product is equal to the real power, in watts. The volt-ampere is dimensionally equivalent to the watt: in SI units, 1 V⋅A = 1 W). VA rating is most used for generators and transformers (and other power handling equipment) where loads may be reactive (inductive or capacitive).