电路分析基础(参考答案) 选择题(共20p每小题1p) CBACA BCCBD CABBC CABCA 计算题(共5小题,每题8分) l、解 1li 6 2i1+4i2=4+2l i2=25A llI 解: (0)=4V l(∞)=6V l2()=6-2e 3、解: U1-(+)U √2∠45 (+-)U1+()U2=0.5 U2=1+j2=√5∠6 4、解:相量模型,2p 10=8+j4=45∠266°1p 5+j20-jl Z。=4+j2 Z1=4-22pPm 5、解 P=5w 4p C F 200
1 电路分析基础 (参考答案) 一、选择题(共 20p 每小题 1p) CBACA BCCBD CABBC CABCA 二、计算题(共 5 小题,每题 8 分) 1、解: 1 1 1 2 1 1 2 2 2 4 4 2 11 2 6 u i i i u i i = − + = + − = 6p 2.5A 1A 2 1 = = i i 2p 2、解: uc (0+ ) = 4V , uc () = 6V , = 4s, t c u t e 4 1 ( ) 6 2 − = − 2p 2p 2p 2p 3、解: ) 0.5 2 1 ) ( 2 1 2 1 ( ) 1 2 1 2 1 ) ( 2 1 (1 1 2 1 2 + = − − + = − − + − + • • • • U U j U j U j 6p = + = = − + = • • 1 2 5 63 2 45 2 3 2 1 U j j j U 2p 4、解:相量模型,2p = + = + − = • 10 8 4 4 5 26.6 5 20 10 10 j j j j U oc 1p Zo = 4 + j2 1p ZL = 4 − j2 2p Pmax = 5W 2p 5、解: P = 5W 4p F 200 1 C = 4p