【判断题】【消耗次数:1】
直流电度表多为电动系。
正确
错误
参考答案:
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相关题目
【单选题】 直流电度表多为( )系。
①  磁电
②  电磁
③  电动
【判断题】 交流电度表一般用感应系和静止式电子电度表。
①  正确
②  错误
【判断题】 交流电度表一般为电磁系和磁电系仪表。
①  正确
②  错误
【判断题】 磁电系仪表广泛地用于直流电流和直流电压的测量。
①  正确
②  错误
【判断题】 电磁系仪表是测量直流电压与直流电流的一种常用仪表。
①  正确
②  错误
【单选题】 直流电动机电枢导体中的电流是_______。
①  直流电
②  交流电
③  脉动电流
【判断题】 直流电动机中包括鼠笼式电动机。
①  正确
②  错误
【单选题】 直流电动机调速方法不包含(?? ?)。?
①  电枢回路串电阻
②  励磁回路串电阻
③  变频调速
④  调节电枢电压
【单选题】 直流电动机常用()方法实现反转。
①  改变磁通方向
②  增加电枢电阻
③  改变电枢电流方向
④  以上选项都不对
【简答题】 直流电动机的作用是[填空]。
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