有一台三相异步电动机,其铭牌数据如下:型号Y180L-6,50Hz,15KW,380V,31.4A,970r/min,cosφ=0.88,当电源线电压为380V时,问:电动机的额定转矩是多少?
电动机额定转矩TN=9550PN/nN=147.66牛·米
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
一项病例对照研究数据如下,其OR值为()
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