问答库

题干| 解析| 归类| 考点| 相关| 热门| 搜索
A-A+

The purpose of the commutator and brushes on a D.Cgenerator is to .

2020-09-18 20:32:24 资格考试 阅读

问题详情

A.change A.Cto DCcurrent

B.change DCto A.Ccurrent

C.neutralize a armature reaction

D.carry current to the outside circuit

请帮忙给出正确答案和分析，谢谢！

参考答案

考点：