volt-ampere
volt-am·pere
(vōlt′ăm′pîr′)volt-ampere
(ˈvəʊltˈæmpɛə)volt′-am′pere
n.
| Noun | 1. | volt-ampere - a unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere |
| 单词 | volt-ampere | |||
| 释义 | volt-amperevolt-am·pere(vōlt′ăm′pîr′)volt-ampere(ˈvəʊltˈæmpɛə)volt′-am′peren.
Volt-Amperevolt-ampere[′vōlt ′am‚pir]Volt-Amperea unit of full power of an alternating current, designated by VA. The full power of an alternating current is defined as the product of the effective values of the current in a circuit (in amperes) and the voltage at its terminals (in volts). The effective values of the current and voltage are measured by AC ammeters and voltmeters . The concept of full power is distinct from the real power of an electric circuit, which is expressed in watts and equals UI cos φ where φ is the angle of displacement of the phases between voltage U and current I, and as distinct from the reactive power, equal to UI sin φ and expressed in vars. volt-ampere
Synonyms for volt-ampere
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