A three-phase alternator operates at 450 volts with a 0.8 power factor. If the ammeter indicates 250 amperes, what should be the kW meter reading?

Correct Answer: Option B — 155.70 kW

Three-phase active power is calculated using the formula kW = (1.732 * V * I * PF) / 1000. Substituting 450V, 250A, and 0.8 power factor yields (1.732 * 450 * 250 * 0.8) / 1000 = 155.70 kW, per IEEE 45 generator testing standards.