[img=300x160]17de8eafc63eafa.jpg[/img]换路前电路是稳态,t=0时刻电路换路,则两个电容电压的初始值为
A: u1(0+)=10V,u2(0+)=10V
B: u1(0+)=10V,u2(0+)=20V
C: u1(0+)=30V,u2(0+)=10V
D: u1(0+)=0,u2(0+)=0
A: u1(0+)=10V,u2(0+)=10V
B: u1(0+)=10V,u2(0+)=20V
C: u1(0+)=30V,u2(0+)=10V
D: u1(0+)=0,u2(0+)=0
A
举一反三
- 1802ef62dd6cde6.jpg换路前电路稳态,t=0时刻换路,则电感电流和电压(关联参考方向)的初始值为 A: i(0+)=1.8A,u(0+)=72V B: i(0+)=1.2A,u(0+)=-40V C: i(0+)=-1.2A,u(0+)=0V D: i(0+)=3A,u(0+)=90V
- 已知描述系统的微分方程和初始状态如下,求0+值y(0+)和y’(0+)[img=471x18]18036720982a6d3.png[/img] A: y(0+)=1,y’(0+)=0 B: y(0+)=0,y’(0+)=1 C: y(0+)=1,y’(0+)=1 D: y(0+)=0,y’(0+)=0
- 图示电路中,t = 0 时开关打开,则 u (0+)为:( )5f8d1402e6428a5fb6885ae5c436194a.png
- 电路如图所示,换路前电路处于稳定状态。t=0时刻开关断开,则电容电压的初始值uc(0+)= V。[img=411x223]17de87adc8d462f.png[/img]
- $u$, $v\in E^3$, $u=(0,-1,1),v=(1,-1,-1)$. What is $||u \times v||^2$:<br/>______
内容
- 0
已知某电路的全响应为u(t) =(10-5e-10 t) V,则u(0+)=______ V,u(¥) =______ V,时间常数t=______ s。
- 1
图示电路中电流源电流恒定,电路原已稳定, t=0 时将开关S打开,则 i(0+)=()A, u(0+)=()V。[img=270x154]17d60e0271dd058.png[/img] A: -4,-6 B: -6,-6 C: -4,-4 D: -4,-2
- 2
u、v为点对应三角形的重心坐标,以下哪种情况为点在三角形内部 A: 0 <= u <= 1 且 0 <= v <= 1 B: 1 <= u 且 1 <= v C: 0 = u 且 0 = v D: 0 >= u 且 0 >= v
- 3
t=0时刻换路时,电容的电流有限,已知电容电压uc(0-)=10V,则uc(0+)=
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设G=<;V,E>;为无向图,[img=52x21]17e0ab1cfb60906.png[/img],若u,v连通,则( ) A: d(u,v)>;0 B: d(u,v)=0 C: d(u,v)<;0 D: d(u,v)≥0