直流电机运行在电动机状态时，其( )。 -题库考试答案搜索网

直流电机运行在电动机状态时，其( )。

单选题

2021-07-17 23:24

A、<span style="font-size: 16.8px; background-color: rgb(255, 255, 255);">E</span><span style="font-size: 12.6px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; background-color: rgb(255, 255, 255);">a</span><span style="font-size: 16.8px; background-color: rgb(255, 255, 255);">＞U</span>
B、<span style="font-size: 16.8px; background-color: rgb(255, 255, 255);">E</span><span style="font-size: 12.6px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; background-color: rgb(255, 255, 255);">a</span><span style="font-size: 16.8px; background-color: rgb(255, 255, 255);">＜U　</span>
C、<span style="font-size: 16.8px; background-color: rgb(255, 255, 255);">E</span><span style="font-size: 12.6px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; background-color: rgb(255, 255, 255);">a</span><span style="font-size: 16.8px; background-color: rgb(255, 255, 255);">＝0 </span>
D、<span style="font-size: 16.8px; background-color: rgb(255, 255, 255);">E</span><span style="font-size: 12.6px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; background-color: rgb(255, 255, 255);">a</span><span style="font-size: 16.8px; background-color: rgb(255, 255, 255);">＝U</span><span style="font-size: 12.6px; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; background-color: rgb(255, 255, 255);"> </span>

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正确答案

B

试题解析

标签：发电厂及电力系统高起专电机学 2019级第三学期期末考试电力系统自动化技术

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