• 2022-06-01
    某非正弦周期电流电路的电压为 u=[120+100sinωt+30sin(3ωt+30°)]V,电流i=[13.9+10sin(ωt+30°)+1.73sin(3ωt-30°)]A,则其三次谐波的功率为?W
    A: 12.975
    B: 25.95
    C: 51.9
    D: 其他三项均不正确