单选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()。AνA=311sin(wt-120°),νC=311sin(wt+120°)BνA=311sinwt,νC=311sin(wt+120°)CνA=311sin(wt+90°),νC=311sin(wt-90°)DνA=311sin(wt+90°),νC=311sin(wt-+20°)
单选题
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°)
参考解析
解析:
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