题目内容
(请给出正确答案)
[单选题]
图示为正弦电流i1和i2的相量图,下列相量式正确的一组是()
A.I1=1∠40°,I2=1∠30°A
B.I1=1∠70°,I2=1∠30°A
C.I1=1∠40°,I2=1∠-30°A
D.I1=1∠70°,I2=1∠-30°A
答案
B、I1=1∠70°,I2=1∠30°A
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A.I1=1∠40°,I2=1∠30°A
B.I1=1∠70°,I2=1∠30°A
C.I1=1∠40°,I2=1∠-30°A
D.I1=1∠70°,I2=1∠-30°A
B、I1=1∠70°,I2=1∠30°A
A.总电流i=20√2sin(wt+98.1°)A
B.总电流i=10√2sin(wt+81.9°)A
C.总电流相量10∠81.9°A
D.总电流相量10∠98.1°
A.WUV
B.UVW
C.WVU
D.UVW