[单选题]保持同步发电机端电压和输出有功功率不变,当励磁电流从正常励磁减小到欠励极限时,功角 δ 的变化是( )?(每题 0.5分)(0.5)
发布时间:2025-12-01
A.减小
B.增大
C.不变
D.先减小后增大
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