Which outcome results when a synchronous generator's field excitation is suddenly reduced while connected to a power grid?

💡 Explanation

When field excitation decreases, the generator requires more reactive power from the grid to maintain voltage, because the reduced field weakens its generated EMF, creating a reactive power deficit. Therefore reactive power absorption increases, rather than power output or voltage rise, corresponding to an underexcited condition.

• In a three-phase power transformer, which event results when the differential relay activates main circuit breakers?
• Which instability occurs when exceeding a jet fighter's flight envelope with an aggressively deflected rudder?
• Which outcome predominantly occurs when transistor channel length decreases in very-large-scale integration (VLSI) MOSFETs?
• Which consequence results when cryogenic fueling weakens a steel column?
• Which risk increases when setting concrete for reinforced concrete columns in freezing temperatures?
• Which outcome occurs when a refrigeration system uses an immiscible refrigerant blend circulating at low temperatures?