设三相正弦交流电的ia=Imsinωt,则ib为()。
A.ib=Imsin (ωt -120°)
B.ib=Imsin (ωt +240°)
C.ib=Imsin (ωt -240°)
D.ib=Imsin (ωt +120°)
E.ib=Imsin (ωt ±0°)
A.ib=Imsin (ωt -120°)
B.ib=Imsin (ωt +240°)
C.ib=Imsin (ωt -240°)
D.ib=Imsin (ωt +120°)
E.ib=Imsin (ωt ±0°)
第1题
A.i=Imsin(ωt-120°)
B.i=Imsin(ωt+240°)
C.i=Imsin(ωt-240°)
D.i=Imsin(ωt+120°)
第2题
A.ib=Imsin(ωt-120°)
B.ib=Imsin(ωt+240°)
C.ib=Imsin(ωt-240°)
D.ib=Imsin(ωt+120°)
第3题
A.ib=Imsin (ωt -120°)
B.ib=Imsin (ωt +240°)
C.ib=Imsin (ωt -240°)
D.ib=Imsin (ωt +120°)
第4题
A.ib=Imsin (ωt -120°)
B.ib=Imsin (ωt +240°)
C.ib=Imsin (ωt -240°)
D.ib=Imsin (ωt +120°)
第5题
A.ib=Imsin (ωt -120°)
B.ib=Imsin (ωt +240°)
C.ib=Imsin (ωt -240°)
D.ib=Imsin (ωt +120°)
E.ib=Imsin (ωt ±0°)
第6题
A.ib=Imsin (ωt -120°)
B.ib=Imsin (ωt +240°)
C.ib=Imsin (ωt -240°)
D.ib=Imsin (ωt +120°)
E.ib=Imsin (ωt ±0°)
第7题
A.ib=Imsin(ωt-120°)
B.ib=Imsin(ωt+240°)
C.ib=Imsin(ωt-240°)
D.ib=Imsin(ωt+120°)
E.ib=Imsin(ωt±0°)
第8题
A.ib=Imsin(ωt-120°)
B.ib=Imsin(ωt+240°)
C.ib=Imsin(ωt-240°)
D.ib=Imsin(ωt+120°)
E.ib=Imsin(ωt±0°)
第9题
A.ib=Imsin(ωt-120°)
B.ib=Imsin(ωt+240°)
C.ib=Imsin(ωt-240°)
D.ib=Imsin(ωt+120°)
E.ib=Imsin(ωt±0°)
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