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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°)
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更多 “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°)” 相关考题
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已知对称三相电源中B相的电动势瞬时值函数式为υB=311sin(ωt-30°)V,则其他两相的相电压瞬时值函数式为()。A、υA=311sin(ωt-120°),υC=311sin(ωt+120°)B、υA=311sinωt,υC=311sin(ωt+120°)C、υA=311sin(ωt+90°),υC=311sin(ωt-90°)D、υA=311sin(ωt+90°),υC=311sin(ωt+210°)
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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
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