Suppose you borrowed a novel from your friend Jane.However,a Suppose you borrowed a novel from your friend Jane.However,after several days yo 分类:机电设备评估 题型:单选题 查看答案
一台三相反应式步进电动机,其转子齿数为40。若该电动机按三相六拍运行,并输入f=1 800Hz的脉冲信号,则该步进电动机 一台三相反应式步进电动机,其转子齿数为40。若该电动机按三相六拍运行,并输入f=1 800Hz的脉冲信号,则该步进电动机的转速为( )。 分类:机电设备评估 题型:单选题 查看答案