90%U x I x t = F x s
0,9 x 500V x I = F x s/t
450 V x I = 450N x 36km/h
I= 4500 N x 36000m/ 3600s : 450V= 4500N x 10m/s : 450 V= 45 000J/ 450 Vxs
I = 100A
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F=4500N
v=36km/h=36*1000/3600=10m/s
U=500V
η=90%=0,9
Szukane:
I=?
*η
I=100A
90%U x I x t = F x s
0,9 x 500V x I = F x s/t
450 V x I = 450N x 36km/h
I= 4500 N x 36000m/ 3600s : 450V= 4500N x 10m/s : 450 V= 45 000J/ 450 Vxs
I = 100A