平面机构的平衡问题中,对“动不平衡”描述正确的是( ) 。 -题库考试答案搜索网

平面机构的平衡问题中,对“动不平衡”描述正确的是( ) 。

单选题

2021-09-01 16:44

A、 只要在一个平衡面内增加或出去一个平衡质量即可获得平衡 
B、 动不平衡只有在转子运转的情况下才能表现出来 
C、 静不平衡针对轴尺寸较小的转子(转子轴向宽度b与其直径D之比b/D<0.2) 
D、 使动不平衡转子的质心与回转轴心重合可实现平衡 

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正确答案

B

试题解析

标签：青书学堂平顶山学院机械电子工程机械原理(专升本)

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