问题
当速度差低于2.5%时相位差小于___,同步定相器转换到定相状态。
A.4°
B.5°
C.8°
D.10°
请帮忙给出正确答案和分析,谢谢!
Fatal error: Uncaught [XSException] ../../../usr/local/xunsearch/sdk/php/lib/XS.php(2559): Connection refused(C#111, localhost:8384)
thrown in /usr/local/xunsearch/sdk/php/lib/XS.php on line 2559