(1)发电机的输出功率是100KW,输出电压是250V ,升压变压器的原、副线圈的匝数比为1:25,求升压变压器的输出电

3个回答

  • 1) U1/n1 = U2/n2

    U2 = U1 * n2/n1 = 250 * 25 = 6250 [V]

    I2 = P2/U2 = 100000 / 6250 = 16 [A]

    2) I^R = 4% * P2

    R = 4000/16^2 = 15.625 [欧姆]

    U' = IR = 4000/16 = 250 [V]

    U'' = U2 - U' = 6250 - 250 = 6000 [V]

    3) P3 = P2 (1 - 4%) = 96 [kW]

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