ηAB=80/100=0.8 N損=100-(100*0.7)=30KW
i12=Z2/Z1=90/60=1.5 i12=n1/n2 n2=n1/i12=3/1.5=2
6-0.06=5.94mm 6+0.06=6.06mm 尺寸范圍為5.94mm∽6.06mm。