一台三相感应电动机,已知其额定数据和每相参数为:P N =10kW,U N =380V,2p=4,f N =50Hz,n N =1455r/min,R 1 =1.375Ω,X 1 =2.43Ω,R' 2 =1.04Ω,X' 2 =4.4Ω,R m =8.34Ω,X m =82.6Ω,定子绕组为△联结,在额定负载时的机械损耗及附加损耗共为205W。求额定转速时的定子电流、功率因数、输入功率。
【简答题】Several years ago I studied in a university in the biggest city in our country. It’s beautiful but it’s hot in ____1_____. So I usually returned to my hometown when my __2______ began. It is not big, ...
【简答题】Several years ago I studied at a university in the biggest city in our country. It’s beautiful but it’s hot in 1 . So I usually returned to my hometown when my 2 began. It is not big, but it’s cool an...