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1 kg⋅m 2 ⋅s −3. The volt-ampere ( SI symbol: VA, [1] sometimes V⋅A or V A) is the unit of measurement for apparent power in an electrical circuit. It is the product of the root mean square voltage (in volts) and the root mean square current (in amperes ). [2] Volt-amperes are usually used for analyzing alternating current (AC) circuits.
A per-unit system provides units for power, voltage, current, impedance, and admittance. With the exception of impedance and admittance, any two units are independent and can be selected as base values; power and voltage are typically chosen. All quantities are specified as multiples of selected base values. For example, the base power might be ...
The Alvin W. Vogtle Electric Generating Plant, also known as Plant Vogtle ( / ˈvoʊɡəl / ), [4] is a four-unit nuclear power plant located in Burke County, near Waynesboro, Georgia, in the southeastern United States. With a power capacity of 4,536 megawatts, it is the largest nuclear power plant (as of 2013), the largest source of low-carbon ...
A 115 kV to 41.6/12.47 kV 5 MVA 60 Hz substation with circuit switcher, regulators, reclosers and control building at Warren, Minnesota. It shows elements of low-profile construction, with apparatus mounted on individual columns. A substation is a part of an electrical generation, transmission, and distribution system.
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Multivariate analysis (MVA) is based on the principles of multivariate statistics. Typically, MVA is used to address situations where multiple measurements are made on each experimental unit and the relations among these measurements and their structures are important. [1] A modern, overlapping categorization of MVA includes: [1]
In biology and medicine. Malignant ventricular arrhythmia, a heart problem. Manual vacuum aspiration, a method of abortion that consists of removing the embryo by suction. Mevalonic acid, an important compound in molecular biology. Mimotope Variation Analysis, an immunoprofiling technology.
In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens. Alternatively, sirens may be used if necessary ...