U=220 B Pм=400 Вт n=0.8 (80%) I=?
n=Pм/Рэ Рэ=I*U I=Pм/(U*n)=400/(220*0.8)=2.27 A
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U=220 B Pм=400 Вт n=0.8 (80%) I=?
n=Pм/Рэ Рэ=I*U I=Pм/(U*n)=400/(220*0.8)=2.27 A
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