试题详情
单项选择题已知对称三相电源中B相的电动势瞬时时值函数式为νB=311sin(wt-30°)V,则其它两相的相电压瞬时值函数式为()。

A、νA=311sin(wt-120°),νC=311sin(wt+120°)

B、νA=311sinwt,νC=311sin(wt+120°)

C、νA=311sin(wt+90°),νC=311sin(wt-90°)

D、νA=311sin(wt+90°),νC=311sin(wt-+20°)

  • D
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