《电路原理导论》部分习题答案

习题答案

11-22

i?1.154e?0.5tcos0.866t?90???t?A

iC?1.154e?0.5tcos0.866t?150??cost??t?A

????????iL?1.154e?0.5tcos0.866t?30??cost??t?A

11-23 uc??30e?3t?50e?4t11-24 i1?1?0.5e?30t11-25 ucd???L?????t?V ， i2?6e?3t?5e?4tA

????t?A;i??1?e???t?A

?30tU??s62?t???1?e3R???t?V， 11-26 ic??0.5e?t?2e?2t?1.5e?3tA， ????6s2?12s?1611-27 UC?s??V 2ss?2s?1??11-28 i1?6?2.4e?3t?2.4e?18tA；i2?4?2.4e?3t?1.6e?18tA 11-29 i??e?t?17e?3t?12e?4tA

s2?s?1s?1s?1????Zs?Zs?12-1（a）Z?s??；（b）；（c）

s?1s2?s?1s2?1s20.75112-2 H?s??， 12-3 H1?s??2 ； H2?s??2

s?0.75s?s?1s?s?112-4（a）H?s??ss?100.5s????Hs?Hs?；， 12-5

?7s?2s?1s2?s?1s2?2t?3t?2?103t12-6 H?s??，12-7（a）r?t??8e（b）r?t???6e?5e???t? ??t?；

?s?2??s?1?12-8 H?s??Us1?； 2Is?s??s?1??s?3?12U??s??s?s?1??s?3?；U??s??1s?s?1??s?3?2；U??s???s?1??s?3??s21.732s?12?1?

12-9 H?s??3s?4s??Hs?， 12-10

s2?3s?2s2?s?1 答案-9

习题答案

12-11（a）una??3e?2tV；uco?3e?tV；

（b）una??0.028e?2t??t?V ；uco?0.448cost?86.57???t?V

??????12-12 (a) h?t???10?20e?t????t?；(b) h?t??14.14e?tcost?45???t?

??12-13 R?2?；L?1H；C?0.5F 12-14（a）H?s??s?9?s???sin???cos?；

；（b）H?s??s?1?s???2??2（c）H?S??s4?7s3?28s2?45s?27?s?1??s?3?2s2

12-15 s?t???1???4?t1?2t?e?e???t? 33?s2?1?LC?12-16 (a) H?s??2；(b) LC?0.25;； s?s?RC??1?LC? (c) u2??2te??2t?e?2t（d）H?j??????t?V；

4??2?4???22??tg?16?24? 24??12-17 (a) H?s???100s；

s2?2s?17?s?4??（b）H?j???100??68?6????25????2232?????3??125???90?tg68?6?2??: ???s?12-18 H?s????

s?1??n?G1?G213-1（a）??G1??1??G?2G1??U1?s???I1?s???U?s????I?s?? ； G1???2??2??G1??U2?s???U1?s?? ???????1???I2?s???I1?s???R2??R?2?R2??I1?s???U1?s???I?s????U?s??

R1?R2???2??2??s2LC1?1sL13-2（a） ??1sL?

?????U1?s???I1?s???1sL?????I?s?? 2??UssLC2?1sL??2??2??答案-10

习题答案

?s2LC2?1s3LC1C2?s?C1?C2??Z?s????1s3LC1C2?s?C1?C2??????????1s3LC1C2?s?C1?C2?? 23sLC1?1sLC1C2?s?C1?C2????????s2LC2?1sL??U2?s???U1?s???3?????I?s?? 2???Is?sLC1C2?s?C1?C2?sLC1?1??2??1??G1?G213-3 ???G2??G3???I???G2??U11?????， 13-4 ???G2?G3??U2??I2????U???5?1?g?5?1?g???I11????? ?5?1?g?5?1?g???????I2??U2???R?sL1?sM13-5（a）T?s???11sM?13-6（a）??s?LL212?M2?s?R1L2?R2L1??R1R2sM??

?R2?sL2?sM??G?G?gm??U1?s???I1?s????GG?sC??U?s????I?s?? ???2??2????3?1??U1?s???I1?s?? ， 13-7 ????????21.5??U2?s???I2?s???3605.55??56.31?13-8 ??j3000????U???s4?3s2?1s3?2s??j1000??I11????????， 13-9 T??3? 2?j1000??I2??U2?s?1??s?2s?1?j2??j3??1.5??90?V 13-10 T?? ； U2??2?j11?j1?13-11（a）?n?1.2??0?1，13-12 ，13-13 Z1?Z2?1? Z3?j1? H????2??nn5???1.20.56?R0Ri?ARiRF13-14 H?j???

R0R1?R0Ri?R1RF?RiRF?R1Ri?AR1Ri13-15 R1?2?；R2?2?；R3?2? ；rm?1?， 13-16（a）H?j???16.8 13-18 Z??13-21 RL??74??10??4531.62??116.57?， 13-20 Z???10??9018.04??123.68? 46????13?；P2?0.25W 3??10??1114-1 （a） A???0?1??00110000?00?1000?? 100110??0?11?1?1?1? 答案-11

习题答案

??101?1000??1100100?101014-5 Qf??1?10?1001?1?10?0000?1?10000010?0??0? ??1??1???1?0Bf???0??0010010100100011001?1?1?10?0?11110?? 10?1?100??000111?001000000100?0?1?1?1?? 0?1?10??1011?000101?0000???11001?? ；Bf??0000?110?

??01??101????10?1?1?1?1??1?014-7（a）Bf???0??0?1?014-8 Qf???0??01000100???1000100100??1?1?1000?1?1?? ；Bf??0?110010? 14-10 A?????0110?100?????0?111001??1??000?100?1?0Qf???0??0010000100?100?0?111?? 00?1?1??100?1?14-11（b）Un1?16V；Un2?70V；Un3?5V 14-12 （a）

答案-12