若i1=10sin(ωt+30°)A,i2=20sin(ωt-10°)A,则i1的相位比i2超前。
A: 20°
B: -20°
C: 40°
D: -40°
A: 20°
B: -20°
C: 40°
D: -40°
举一反三
- 若i1=10sin(ωt+30°)A,i2=20sin(ωt-10°)A,则i1的相位比i2超前。 A: 20° B: -20° C: 40° D: -40°
- .若i1=10sin(ωt+30º)A,i2=20sin(ωt-10º)A,则i1的相位比i2超前(3.0分)
- 若i1=10sin(wt+30°)A,i2=20sin(wt-10°)A,则的相位比超前() A: 20° B: -20° C: 40° D: -40°
- 若i1=10sin(ωt+30O)A,i2= 20sin(ωt-10o)A,则i1的相位比i2超前( )
- 若电流i=i1+i2,且i1=10 sin ωt A,i2=10 sin ωt A,则 i 的有效值为( ) A: 20A B: [img=41x47]1803e0183415af2.png[/img] C: 10A D: [img=41x47]1803e0183cbaf59.png[/img]