R = 100 X = XL - XC = 20 - 10 = 10
Z = ï¼R*R+X*Xï¼^0.5 = 100.5 tana = X/R = 0.1 a = 5.7度
Im = Um / Z =200 / 100.5 = 1.99 Φ = 30 - 5.7 = 24.3 度
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表达å¼ï¼i = ImSIN(100T+Φ) = 1.99SIN(100T+24.3度)
è§å¨åç: S = U * I =( 200/â2) * ( 1.99/â2) = 199 Kva
æååç: P = I*I*R = ( 1.99/â2) *( 1.99/â2) *100 = 198 W
æ ååç:Q= I*I*X = ( 1.99/â2) *( 1.99/â2) *10 = 19.8 Var
åçå æ°:cosa = cos5.7 = 0.995