In a balanced three-phase system, if P_phase = 60 W, what is the total real power P?

In a balanced three-phase system, if P_phase = 60 W, what is the total real power P?

• A. 60 W
• B. 120 W
• C. 180 W
• D. 240 W

Answer: (C)

In a balanced three-phase system, the real power adds across all three phases. If each phase delivers the same real power, the total real power is simply three times the per-phase value. So the total power equals three times the given per-phase power. This is why the correct result corresponds to three times the phase power.

In a balanced three-phase system, the real power adds across all three phases. If each phase delivers the same real power, the total real power is simply three times the per-phase value. So the total power equals three times the given per-phase power. This is why the correct result corresponds to three times the phase power.