师父,救救我!!~谢谢
1.I=P/U=4840W/220V=22A
r = U/I = 220v/22A = 10ω
p损耗= I 2R线路= (22a) 2 * 0.2ω = 96.8W。
2.I ' =(p 1+P2)/U =(7260 w+4840 w)/220v = 55A
Q = I' 2r线路T =(55a)2 * 0.2ω* 2h = 1.21kW h
r = U/I = 220v/22A = 10ω
p损耗= I 2R线路= (22a) 2 * 0.2ω = 96.8W。
2.I ' =(p 1+P2)/U =(7260 w+4840 w)/220v = 55A
Q = I' 2r线路T =(55a)2 * 0.2ω* 2h = 1.21kW h