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%
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