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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:电动机满载运行时的效率是多少?

问答题
2022-01-21 16:25
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正确答案

电机效率为η=PN/P1=82.8%


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