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单相集中式绕组中,通入单相交流电流,产生的磁势为()。
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单相集中式绕组中,通入单相交流电流,产生的磁势为()。
A、圆形旋转磁势
B、脉振磁势
C、椭圆形旋转磁势
时间:2022-01-19 15:38
关键词:
机电一体化系统设计
机械工程
大学试题
工学
答案解析
B
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