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2 K VA  is the power unit,  2 kilo volt amperes.
Volt ampere is used for rating of power supplies and equipments.

Volt ampere is the product of the RMS values of (AC) voltage and (AC) current - and we get the apparent power.

In a DC circuit, voltage and current multiplied gives the real power consumed.

Apparent power is to be multiplied by  a power factor  (0.8 or so) to get real power consumed.

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