首页/ 题库 / [单选题]直流并励电动机起动时,串联在励磁回路中的的答案

直流并励电动机起动时,串联在励磁回路中的变阻器应处于的位置

单选题
2021-09-01 20:54
A、阻值最大
B、阻值最小
C、?断开
D、任意。
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正确答案
B

试题解析

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