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直流电机电刷处在几何中性线上,当磁路不饱和时的电枢反应是( )。

A、交轴电枢反应

B、直轴去磁

C、交磁和直轴去磁

D、直轴加磁

时间：2021-07-17 23:24 关键词：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

答案解析

A

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