题目内容

三相异步电动机常用的电气制动方法有（）制动（能耗）制动、（发电）制动和（电容）制动等。

查看答案

搜索结果不匹配？点我反馈

更多问题

反接制动是需要停机时通过改变电动机电源（相序），产生制动力矩的一种制动方法。当电动机转速接近零时，必须立即断开电源，否则电动机会（）旋转。

能耗制动时，切断定子绕组的交流电源后，在定子绕组任意两相通入（），形成一固定磁场，产生制动力矩。制动结束，必须及时（切除）直流电源。

When employees participated in the problem-solving process, they were much more willing to ________ solutions to the problems.

A. complement
B. compliment
C. implement
D. supplement

Strong police force has been placed between the two _______ groups in the village to prevent fighting and killing.

A. rival
B. imperial
C. temporary
D. prejudiced