发电机转子上为什么装阻尼绕组?
参考答案:
因为发电机短路或三相不平衡运行时,发电机定子中产生负序电流,使转子表面产生涡流,从而使转子发热和振动,为此在转子上加些阻尼绕组。
— Didn't you have a good time at the party?
— Of course I did. As a matter of fact, I had such fun that time seemed to _____ so quickly. [ ]
A. go by
B. go away
C. go out
D. go over
远动装置的遥控操作分为()控操作和()控操作。