【简答题】一台绕线转子三相异步电动机,定子绕组Y形联结。已知的技术数据为:P N =5.5kW, U 1N =380V,n N =1440r/min, E 2N =171V,R 1 =1.12Ω, R 2 '=0.95Ω, X 1 =2.32Ω,X 2 '=2.38Ω。如果该电动机正在以n=n N 的转速正向运行,将其换接到定子两相反接的反接制动状态,要求开始的制动转矩为1.5T N ,问:在电动机的转...
【单选题】Physician attitudes, biases, fatigue, stress, burn-out, as well as language and cultural barriers may ____________ impact the relationship with patients.