Two AC generators are operating in parallel and both are equipped with automatic voltage regulators. While standing watch, one generator is noted as having a greater lagging kvar value. In order to equalize the kvars between the generators manually, what should be done?

Correct Answer: Option C — decrease the voltage of the generator with the largest kvar while increasing the other generator voltage

Reactive power sharing between paralleled alternators is governed by automatic voltage regulator field excitation. Decreasing excitation voltage on the generator with excessive lagging kvars while increasing the other's voltage restores reactive load balance.