上海交通大学：《电力系统自动化》课程教学资源（讨论课）第四次讨论课-冯欣

上海交通大学：《电力系统自动化》课程教学资源（讨论课）第四次讨论msh

I Writing nodal equations by inspection determine v, in each circuit of Fig 2-32 6 A

上海交通大学：《电力系统自动化》课程教学资源（讨论课）分布式能源并网的问题与对策_谢弘洋

In this chapter we first introduce some of the basic definitions most often used in network graph theory and then implement some of the results of introductory graph theory to obtain general laws (KCL and KVL) which apply to any network

(a)Find V, in Fig. 8-20.(b)To what identical value should each of the 4Q2 resistors be changed so that V2 is 180 out of phase with the source voltage?

1 If the voltage across a 5F capacitor is 2te -V, find the current and the power 2 In 5s, the voltage across a 40mF capacitor changes from 160v to 220V. Calculating the average current through the capacitor

Find the four Y parameters of the network shown in Fig

sequence. The balanced source supplies IMW and 0.2M VAR. If R, =12, find: (a) the line current;(b)Zp; ()the transmission efficiency

1 Find F(s) if f(t) = (a)(t-3);(b)4t u(t-3); (c)4 cos to(t-3). 2 Obtain partial-fraction expansions for each of the following rational functions, and find the corresponding time functions: