For a balanced three-phase load, the total power is equal to
A) 3 x line voltage x line current
B) 3 x line voltage x line current x power factor
C) 3 x phase voltage x phase current
D) 3 x phase voltage x phase current x power factor

Question

Quizplus · Accepted Answer

For a balanced three-phase load, the total power is equal to 3 x phase voltage x phase current x power factor. This is because the power in each phase of a balanced three-phase system is the same, so to find the total power we simply multiply the power in one phase by 3. Additionally, we need to include the power factor, which is the ratio of real power to apparent power and accounts for any phase shift between the voltage and current waveforms. Therefore, the correct formula for total power is 3 x phase voltage x phase current x power factor.

For a Balanced Three-Phase Load, the Total Power Is Equal