XL=5Ω的电感元件,施加u=10sin(ωt+600)V的正弦电压,则通过电感元件的电流相量为( )
未知类型:{'options': ['17da55d66e3c854.jpg=50∠600A', ' [img=6x19]17da55d66e3c854.jpg[/img]=2[img=21x20]17da3b4bbe936ec.jpg[/img]∠1500A', ' [img=6x19]17da55d66e3c854.jpg[/img]=[img=21x20]17da3b4bbe936ec.jpg[/img]∠300A'], 'type': 102}
未知类型:{'options': ['17da55d66e3c854.jpg=50∠600A', ' [img=6x19]17da55d66e3c854.jpg[/img]=2[img=21x20]17da3b4bbe936ec.jpg[/img]∠1500A', ' [img=6x19]17da55d66e3c854.jpg[/img]=[img=21x20]17da3b4bbe936ec.jpg[/img]∠300A'], 'type': 102}
举一反三
- 定义在R上的偶函数f(x),且在区间[img=46x19]17da5c04e376459.jpg[/img]上为增函数,则( ) 未知类型:{'options': ['f(3)))', 'f(3))', 'f([img=21x20]17da3b4bbe936ec.jpg[/img])<;f(2)<;f(3)'], 'type': 102}
- 已知电感元件的电压u=100[img=25x23]17e43734577b789.png[/img]sin(314t-π/6)V,若感抗为10Ω,则它的电流是: 未知类型:{'options': ['i=10sin(314t-π/6)A', 'i=10[img=25x23]17e43734577b789.png[/img]sin(314t-3π/2)A', 'i=10[img=25x23]17e43734577b789.png[/img]sin(314t-2π/3)A', 'i=100sin(314t-π/6)A'], 'type': 102}
- 求不定积分[img=132x48]17da6537fc8dad6.png[/img]; ( ) A: -(4*(cos(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) B: (4*(sin(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) C: (4*(cos(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) D: (4*(cos(x/2)/2 + 2*cos(x/2)))/(17*exp(2*x))
- 下图中,u=20sin(wt+[img=24x19]17da5764bfbf712.jpg[/img])V,则i等于() 未知类型:{'options': ['4sin(wt+[img=24x19]17da5764bfbf712.jpg[/img])A', ' 4sinwtA', ' 4[img=21x20]17da3b4bbe936ec.jpg[/img]sin(wt+[img=24x19]17da5764bfbf712.jpg[/img])A'], 'type': 102}
- A,B,C为相互独立的三个事件,若[img=171x21]17da55ab2ed8999.png[/img],则[img=84x21]17da55ab49b3232.png[/img]的值为 A: 1/2 B: 10/17 C: 3/10 D: 6/17