If the phase values of voltage and current in a three-phase circuit are known, the apparent power can be computed using the formula VA = ____.
A) 3 x EPhase x IPhase
B) (EPhase x IPhase) / 3
C) 3 / (EPhase x IPhase)
D) EPhase x IPhase

Question

Quizplus · Accepted Answer

The apparent power (VA) in a three-phase circuit is calculated using the formula VA = 3 x EPhase x IPhase, where EPhase is the phase voltage and IPhase is the phase current. This formula accounts for the three phases in the system, hence the multiplication by 3.

If the Phase Values of Voltage and Current in a Three-Phase