【判断题】【消耗次数:1】
绕线式转子三相异步电动机在转子中串电阻调速属于恒转矩调速。
正确
错误
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相关题目
【判断题】 绕线式异步电动机转子回路串电阻可以增加堵转转矩?
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【单选题】 绕线式三相异步电动机,转子回路中可以外串三相对称电阻,以增大电动机的启动转矩,启动结束后可以切除外串电阻,电动机的效率从而受到受影响。
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【判断题】 起重机上采用的绕线式异步电动机为了满足起重机调速范围宽,调速平滑的要求,应采用转子串调速电阻?
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【简答题】 三相异步电动机的调速依据是[填空]。
【判断题】 通常三相笼型异步电动机定子绕组和转子绕组的相数不相等,而三相绕线转子异步电动机的定、转子相数则相等.( )
①  正确
②  错误
【判断题】 三相异步电动机的最大电磁转矩的大小与转子电阻r2阻值无关( )
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随机题目
【单选题】 Don’t worry. We have _______ to finish the work carefully.
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