一台同步发电机在额定负载时增加励磁电流,则( )。
发布时间:2026-01-23
A.电磁功率不变,功率角下降;
B.电磁功率下降,功率角下降;
C.电磁功率增加,功率角增加;
D.电磁功率不变,功率角增加;
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