【简答题】如图所示电路,根据电阻的联结情况分析,若要计算图中电压或电流则需要对电阻网络进行△-Y等效变换,若将图中由10Ω、8Ω和2Ω组成的△形等效变换成Y形,则等效变换后Y形电阻 R 1 = Ω, R 2 = Ω, R 3 = Ω。利用等效变换后的电路进行相应计算,可得:Rab= Ω, I 1 = A, I 2 = A, Uab= V, U= V 。
【单选题】One of the advantages of taking notes is that it forces you to pay closer attention to the class lecture. If you listen【36】to a professor who is talking on and on for an hour or so, your mind will oft...
【简答题】Motivating Forces for Todays Employees For this part, you are allowed thirty minutes to write a composition of no less than 120 words on the topic 'Motivating Forces for Todays Workers'. You must base...