To=Po/w =60Po/2 πn5 =60*Po / (2 * π * 1740)Po=913.5η=Po/Pi =913.5/1250 =0.73 約=73%
7 一部四極,60 Hz 單相感應電動機,接於 110 伏特電源,其輸入電流為 ..-阿摩線上測驗