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30. A three-phase 318.75kVA, 2300V alternator has an armature resistance of 0.35 Ω phase and a synchronous reactance of 1.2 Ω phase . Please determine the voltage regulation at full-load kVA, 0.5 power factor leading, and rated voltage.
(A) 1.55%
(B) 3.22%
(C) 6.12%
(D) -5.11% 



30. A three-phase 318.75kVA, 2300V alter..-阿摩線上測驗