電路理論基礎(chǔ)習(xí)題答案

電路理論基礎(chǔ)習(xí)題答案電路理論基礎(chǔ)習(xí)題答案電路理論基礎(chǔ)習(xí)題答案電路理論基礎(chǔ)習(xí)題答案編制僅供參考審核批準(zhǔn)生效日期地址：電話：傳真:郵編:電路理論基礎(chǔ)習(xí)題答案第一章1-1.(a)、(b)吸收10W；(c)、(d)發(fā)出10W.1-2.–1A;–10V;–1A;–4mW.1-3.–0.5A;–6V;–15e–tV;A;3W.1-4.u=104i;u=-104i;u=2000i;u=-104i;0tms0tmspmW41002250tmsimA410 i,A i,A .75 t0.25 ms(d) 1-7. u,V100010 t,ms(e) u,V800 10-20 t,ms(f)iiA0s11231-e-tt1-8.2F;4C;0;41-9.9.16V,0,.p(W)100 1 2 t(s)-101-10.1–e-106tA,p(W)100 1 2 t(s)-101-11.3H,6(1–t)2J;3mH,6(1–1000t)2mJ;1-12.0.1-13.供12W;吸40W;吸2W;(2V)供26W,(5A)吸10W.1-14.–40V,–1mA;–50V,–1mA;50V,1mA.1-15.0.5A,1W;2A,4W;–1A1-16.10V,50W;50V,250W;–3V,–15W;2V,10W.1-17.(a)2V;R耗4/3W;US:–2/3W,IS:2W;(b)–3V;R耗3W;US:–2W,IS:5W;(c)2V,–3V;R耗4W;3W;US:2W,IS:5W;1-18.24V,發(fā)72W;3A,吸15W;24V電壓源;3A↓電流源或5/3Ω電阻.1-19.0,US/RL,US;US/R1,US/R1,–USRf/1-20.6A,4A,2A,1A,4A1-21.K打開：(a)0,0,0;(b)10V,0,10V;(c)10V,10V,0;K閉合:(a)10V,4V,6V;(b)4V,4V,0;(c)4V,0,4V;1-22.2V;7V;;2V.1-23.10Ω.1-24.14V.1-25.–,1.333A;,1-26.12V,2A,–48W;–6V,3A,–54W.※第二章2-1.2.5Ω;;8/3Ω;;4Ω;R/8;Ω;Ω;40Ω;14Ω.2-2.11.11Ω;8Ω;Ω.2-3.Ω.2-4.400V;;IA.5A,電流表及滑線電阻損壞2-6.5kΩ.2-7.Ω.2-8.13A,Ω;–5V,Ω8V,Ω0.5A,32-9.1A,2Ω;5V,2Ω;2A;2A;2A,6Ω.2-10.–75mA;–0.2-11.6Ω;Ω;0;Ω.2-12.4Ω;Ω;2kΩ.2-13.5.333A;2-14.(a)–1;(b)–2,2-16.3A.2-17.7.2-18..2-19.1V,4W.2-20.64W.2-21.15A,11A,17A.2-23.7V,3A;8V,1A.2-24.4V,,2V.2-26.60V.2-27..2-28.–18V.2-29.原構(gòu)成無解的矛盾方程組;(改后)4V,10V.2-30.k,50k.2-31.R3(R1+R2)iS/R1.2-32.可證明IL=uS/R3.2-33.–2;4.2-34.(uS1+uS2+uS3)/3.※第三章3-1.–1+9=8V;6+9=15V;sint+e–tV.3-2.155V.3-3.190mA.3-4.1.83-5.左供52W,右供78W.3-6.1;1A;0.3-7.3A;;;2/3A;2A.3-8.20V,–.3-9.–1A;2A;–3-10.5V,20;–2V,4.3-12.4.6.3-13.2V;0.3-14.10V,5k.3-15.4/3,75W;4/3,.3-16.1,.3-18.50.3-19.03-20.1A.3-21.1.3-22.4A;–2A.3-23.23.6V;3-24.52V.※第四章4-1.,100V,50Hz,,0o,–120o;120o.4-2.7.07/0oA,1/–45oA,4-3.,.4-4.10/,10/,10/–,10/–；各瞬時表達式略。4-5.,30V,25V;12V,0,12V,0;0,0,12V.4-6.7.07A;10A4-7..4-8.3.24-9.5,0.4-10.5A;20/–,S.4-11.52.4-12.10A,141V.4-13.5,0.0577F;3,;3,0.125F;0,0.02F4-14.3.47,534-15.4-16.26.3,,344-17.,0.2524-18.0.7514-19.40.4-20.10/0oA,10/0oV,200W,1;20A,0；2A.4-21.21.26A,1800W,;,2778W,;4-22.495W,.4-23.20+j10,,.4-24.,或,11,–.4-25.30+j10=V,300W,–300Var.4-26.A;2VA,j2VA,2VA,–j2VA,–4VA.4-27.2/–90oA;V,–,V,1+j1.4-28.近似為：,50+j50.4-29.5A,11.09A,4-30..4-31.200/–150omA.4-32.10H.4-33.5,,367.4-34.,;.4-35.+,.4-37.100,,0.4-38.10,,3183pF;50.4-39.0.14-40.,50.4-41.,.4-42.25F4-43.0.253F,4-44.4.4-45.1.1744-46.30.09A4-47.54.4-48.(1)IA不變，因?qū)ΨQ時中線不起作用。(2)仍不變，因為S閉合時各相負載電壓未變，電流表所涉及的兩個A相負載也未變。4-49.38/–,38/–,75oA;–;–;.4-50.190W,380W.4-51.1kW.4-52.6.4-53.,;,–.4-54.P(a)=P左+P右;Q(b)=PW.4-55.可.4-56.,91.89F.(4-57~4-58從略.)第五章5-1.5-2.根據(jù)繪出.5-3.5-4.(b)讀數(shù)大。5-5..5-6.20mH,,,,44mA,22mA,66mA.5-7.1.59/–5-8.13.42/–V;–5-9..5-10..5-11.50mH.5-12.20H,,250V.513.4.06/–A–A–5-14.2kW,.5-15.0.09W;5-16.1.5-17.U2/U1從降為.5-18.20–j15,.5-19.,–,100W.注意到PR1=20W，PR2=60W，可見：電源供給第2線圈共100W的功率，其本身僅耗60W，其余40W經(jīng)互感耦合至第1線圈，線圈1耗20W，還剩20W送還給電源(P1=－20W)P=100－20=80W。5-20.9.5-21.5-22.50/45V，500/45；0.1A.5-23.，，.5-24.40k；2mA，4mA；2V，4V.5-25.50pF，80pF，4H；0.25A，05-26.107rad/s,100;80V,40V;50V,50V,20V,40V.5-27.100pF，250pF，H.※第六章6-1.(a)非線性、定常、單向、流控；(b)線性、定常、雙向、單調(diào)；(c)非線性、定常、單向、單調(diào)；(d)非線性、時變、單向、cos2t≠0時單調(diào)(否則流控)；(e)、(f)非線性、定常、單向、單調(diào)；(g)線性、時變、雙向、cos2t≠–1時單調(diào)(否則壓控)；6-2.即出現(xiàn)基波和三次諧波。6-3.3,11;,.6-4.7.IU0 5V(a)IU0 5V(a)IU0U(c)US/RI,AU,V015(b)–IU0IU0RIS(e)-IS1R1IU0E1(d)-E21R2IU0U(f)-RIS-ISiuiu02(c)'1–3211iu013(d)'12116-6.i(mA)ti(mA)t0 π2π1(b)i(mA)t0 π2π1(a)6-8.(a)u=2V；(b)u=6V；(c)6-9.,4.3A;5.0 T–1t0 T–1t–203Tuo(V)3–103T–2011T–2019T–16-11.1.3426-12.6-13.6-14.,,0.5F;3H,3H,2+103cos(t–)V;4+103cos(t–)V.6-15.1+(2/3)103cos628tA.6-16.6-17.–1V，2A6-18.1V,1.667A,1.75A,0.0833A;,,,.※第七章7-1.7-2.7-3.7-4.,10.97A7-5.7-6.100+20cos314t+14cos(942t+45o)V;,10.7-7.,1.69A,7-8.2cos(2t+45o)A,3W.7-9.(t–)+(2t–45o)A;.7-10.30mH,8.7-11.5+5cos(t–45o)V.7-12.,H.7-13.,,141cot+cos(3t–60o)V.7-14.700W.7-15.160V,,.7-16.iB=()+(3t–)+cos(5t+)A.7-17.;,;,.※第八章8-1.8-2.6V,0.2A;10V,10mA;-8V,2A;U2;U8-3.(a)U3,U(3R),U(3RC),0;(b)0,,50000s,-1000s(c)17V,5A,0,4.58-4.0,0,UL,0.8-5.3.330A;2V;-10V,108-6.;;8-7..8-8.(a).(b).8-9.8-10.1.024kV;Ω;;50kA;50MW.8-11.;.8-12.8-13.–,,.8-14.8-15.8-16.(1)RC并,R=,C=0.75(2)RL并,R=2k,L=2H.8-17..8-18.4,4,0.25F8-19.;.8-20.(a).(b).8-21..8-22.(1)(2)25J,0;(3),,;8-23..8-24.8-26.8-27..8-28..8-29.;.8-30..8-31.8-32.8-33.8-34.,欠阻尼.8-35.(a)臨界阻尼；(b)過阻尼。8-36.8-37.8-38.8-39.8-40.8-41.8-42.8-43.8-44.8-45.8-46.A.8-47.8-48..8-49..8-50.8-51.;8-52.;,.8-53.CAA習(xí)題8-54、8-55、8-56從略。第九章9-1.9-2.9-3.9-4.9-5.++2OC=-Y21S/Y21-abZ2i=1/Y229-7.(a)見右圖；50７50７(a)4422ΩΩΩΩΩ+U2-I2+U1-I1.+U+U1-1S1SI2+U2-+U1-I12S3S9-11.1S1SI2+U2-+U1-I12S3S2U12020SI2+U2-+U1-I110S5U19-12.–1/29;9-13.9-14.9-15.9-16.4,;6A,0.0988A.9-17.––10tV，t>0.9-18.10V,–0.5A.9-19.，3.336A.9-20.jr2n2C9-21.,.9-22..9-23.,低通；,帶通；,Q值低一些的帶通。※第十章10-1.10-2.(1