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国产额定转速为1440r/min的感应电动机的极数为( )。
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国产额定转速为1440r/min的感应电动机的极数为( )。
A、2
B、4
C、6
D、8
时间：2021-09-02 13:59
关键词：
青书学堂
平顶山学院
电气工程及其自动化
电机与拖动
答案解析
B
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国产额定转速为1440r/min的感应电动机的极数为( )。
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