位置:首页 > 题库频道 > 国家电网考试 > 电工类专科 > 题海班江西 > 电路题海班 > 电路题海专项试卷21

对称星形负载接于线电压为380V的三相四线制电源上,如下图所示。当M点和D点同时断开时,U1为(   )。

发布时间:2026-01-23

A.220V

B.380V

C.190V C.110V

试卷相关题目

    SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id < 4499927 and id<>'4499927' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id > 4499927 and id<>'4499927' order by id asc limit 5
返回顶部