转3000转用电1千瓦时,转15转用电E=(15/3000)kW.h=0.005kW.h=18000J
功率P=E/t=18000/180=100W
解法二
P=(15转/180s)/(3000转/kW.h)=(15转/180s)/[3000转/(1000W*3600s)]=100W
转3000转用电1千瓦时,转15转用电E=(15/3000)kW.h=0.005kW.h=18000J
功率P=E/t=18000/180=100W
解法二
P=(15转/180s)/(3000转/kW.h)=(15转/180s)/[3000转/(1000W*3600s)]=100W