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The word var is a specialized technical term used in electrical engineering to describe a unit of reactive power. Unlike watts, which measure real work, a var represents the power that oscillates within an alternating current circuit between the source and reactive components like capacitors and inductors. This lesson explores the acronym origin of the term, its specific application in power factor correction, and how it differs from volt-amperes and watts. You will see practical examples of how engineers use this unit to maintain voltage levels in transmission grids. Watch the lesson to master this essential concept in power systems analysis.

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Từ chứa "var"

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A technician checks the var reading on the power meter.