电工电子习题答案

习题答案第1章，R支ABABC5964VII431第2章1A,12/710VVV，，10VV4.44V，，SΩ2++A362V，A，0.6A2A2AmA5A14，A，AmA7mA2mA，，0.5A10.5A，A，V,uVu123.33V2A12.8V115.2W，15/11A0.4A15A10A25A1116A27AA，，，，12V(1)18W72W10A36V360W电阻：10A20V200W4，，，，；电4A1664，V，W；，V，W2A10204A1040，V，W6A，V，W6363A11.4VV，0A；(2)1.09AIV0.154A0.5A第3章BB无BCBBBBBtut)u()u(0)u(ecccc(010)eVt105105eVduiCc1106(10)(105)e105tAe105tAdt则t'510e105t'ln0.5t'6.93106us105由0到。uuscuu()u(0)u(0etu(e)Uet)e25t0.04)t0)（tccccctuu()u(0)u(ecccctu(0)ee100tVctii()i(0)i(e1111ti(0)e12emA100t1tuu()u(0)u(ecccctut)u()u(0-u(ecccct(40120)e103V120-80e1000tVt0)（S80120-80e1000t't'ucln0.5t's0.693ms1000S，。ucu(0)u(0)10VccR1RR100u()cU100V50Vs10010012100100100100RC(R//RC2106s104s12tut)u()u(0-u(ecccct050)e104V50-40e104tVt0（）u(t)Uu(t)(5040e104t)]V(5040e104tV(t0)0scuctuu()u(0)u(ecccct[22)eV(2e500tV103i3u(0)i(0)ab3R3u(0)abuu(0)cRR3u(0)abV121112RRR123u(0)3则i(0)abmA3R43u4又i()3mAmARR2212tii()i(0)i(e3333(0.75e500tmAe500t)mAtuu()u(0)u(ecccct[50(eV(5eV10t0.1。0tTuu(0)u()10VcRCcctuu()u(0)u(eccccttu(e]eVRCc当tTRC时uT)e1V6.32VcTtT,uU又RC,uT)cctTut)UuT)Ue（tT）RCcctT则u(2T)cTT0UuT)UeTcUe1)uT)e1cuT)e6.32e11UV3.68Vc1e11e1SUi(0)i(0)220ALLR403UU24206040i()12()A0.9ALR1R2LL41R(R//R//R)s0.2s1231116012040tit)i()i(0)i(eLLLL[0.9(0.50.9)e]A5t0.9-0.4e)A5tUR1530i(0)i(0)A0.5ALL2又i()0LL22ss30(RR)R123时t0tit)i()i(0)i(ee10tALLLLdit)ut)LL20.5(10)e10tV10e10tVLdt10e10tut)L1it)3Ae10tAe10tAR3303ue10t30301it)2L(t)Ae10tA0.167e10tARR162t0)Ui(0)i(0)1126A2ALLR1(0)(0)(0)iii2L1Ri(0)Ri(0)UU11221s2i(0)i(0)1A12t)L126Ui()1A2A119Ui()s2A3A23R2i()i()i()(2A5AL12LL1636312ssRRR12iiiL12tit)i()i(0)i(e(25)e2t]32t)AAeLLLLtit)i()i(0)i(e[22)e2t](22t)AAe1111tit)i()i(0)i(ee2t]22t)AeA2222(),(),即itutLLdit)ut)LLLdtUut)则()it1L11Uut)i2(t)s2LR2第4章•gojA(43)Uj30V和Ig(4j3)AIggI和UgU220eVVojogI(4j3)A143.13Aou(t)2sin(Voi(t)52sin(t-143.13)A））g当I(4j3)A36.87Aoi(t)52sin()Ao）110610，LH，CRFV,U,UIURLCu2202sin314tV直流电压U]SUIAARUIRVRU0LU0CSI0UIR0RU0LUUVC）））电源为正弦电压u2202sin314t]SIUI112A15.56ARL)22UIR15.5610VVRUIXILVLLU0CSIUIAA1R(L)22CUIR2210V220VRUIXILVLL1UIVCCCAVrad/sRkRLV,I30U,UZR(L)22LU()R)1602222I3LH40H则2U120VI20，U50220VfI28.2R。UR6IRLUZRfL)22I15.88LV2ΩZ=RL13.81081.6o3UIAZ13.8103coscos81.60.146oLR2801ΩΩR20LU220H和2。Z(RR)Lj518)599o12UIZA0.367AUIR0.367VV11UIRL)190.3V2222UU293.1V220V12g电压相量UggUUUUU1212AV0和0A0V060V10A1R0X10A2100V2L10V10VV15AA1XLR3AA2XXCCV01CΩ0=II2A14.14AAI2122oo=UIVV读数：U2221oo=II2AAIoo12=UU2AV读数：U2122oogU=2AI15j5oAI31I42A和1A,2ZRjXZRZ,ZA12012CZjXZA01L2表A0IA21ZZ12gggIII12g故IIgR,ZjX,90A5AI2I2ZZIo12C21o12gIgg当I与IRZAoAo1212II7AI12gggjXZjXZI与IAIo1L2C12IIAAIo12U220,R101Ω,Ω,R20Ω2X31I+IR11U-R2jX1gUU0V2200VoogU2200ogI1160A则oRjX10103111gU2200ogI110AoR2022gggIII1130Ao12PRIRIW221122P)Wiu2sin314t,,i22sin(314-45)1toi2sin(314t),和。RLoAC2ii1AA1+uRAV2CL-、i、i、u122U220V,IAAI11A,12gggIII(112451190)A110Aooo12、A、AA。12U20因XIC21C159.2FXCgUZRjX(1010)1LgI1R10,X10LXL故LZab。1Ωaa-410H10H0.2μFC1Ωbb11Zo1jC1jjL11Z(RL)(11)(1.5j0.5)1.5818.4oC11ab1R•I。I3ΩI-j4ΩA5Ω-j5Ωj30°Aj0°j4Ω5gIeA2Aj0o5j5j4gI30eA40Aoj(3jj4ggUj5I545VoggU530ejo(34)322.48.8jIV••0UV，求U。oCj2Ω2Ω++-j2Ω2ΩUCU--gUgI0.5AC2RgUgICjACj2g则IggII(0.5j0.5)ARCggU(2j2)IjV1g所以UggUU563.4Vo1CR5Ω1CI101I62U113P1140。，，ZiZai-+1iZR21u2ΩC~abL-b、i、i与i12与uabIII8A2122RjX设ZPIRIRW2211PIR21R1故I2RXZ22ZR10则XZR22RjX(1010)L31.8,C318，RR10Ω，12f50,U10VUP，S及cos。iRa++iiR1R212uu-abLC-b2f250rad/s314rad/s解：由题设可知，则感抗XL103L11CX106CZ为ab(RjX)(RjX)Zab100Vo1L2C(RjX)(RjX)1L2CZ=R100)200ooabg设UU00VoogU0ogIA0AoZ0oIZ(0.510)VV则UPUI)100.5cos(00WWooiQUI)100.5sin(00)0ooiSUI(10VAVAcos()01oui100V本题也可Z知电阻值与相等，故oRabUUVab22UAIRX41221L2UI1ARX4222CU0.5AIZIRIRIRW故P2122212QIXIX02122LCSPQVA'22P1'SWRL40PINA0.364ANU110NUUUVV2222LNUI190.50.364X523.4LLNXLH1.67HLfPPSPC)'2222202F2.58FU220I5N,P500,NCIf50。WAVCN~NCI220I5APUIcos，且U，P5UNZI5ZRjX63(20j故ZoLR，X39.2LX则LH0.125HL第6章))V•)V•BB与H与B与IBfHB和HB与HBHI（通（L（P（URUIIRIIPIR2uL（LNi4.44fNUNfmUmNN12()。m1m2><U4.44fN1m1m2U4.44fN2UfNN1m12m2NN12m1m2mII21II12II21Um14.44fNUNU和减f11m11BmmPeU4.44fN可知，)()，线m只与U、和Nfm11mmm107FBBA，2mmm0F与BF2m((UIRNI107BABAF20000F增A201000NFe0.002，50lFe0.002B1TA20104eH0.7103Hl32IAeN0.21TBB1。B0HlHlHF0eBHl0Fe010.710500.2100.210A32241071941AHl1941I1.941AN1000RI2UuAR、N和UI2RINRARBAmm4.44fNAfN和UUmmB→ImHHlINIAmmmmmmPIR2CuURINNR和UIPIR2RCum(RBAmNR和UU4.44fNNBmHlmNmmINHHlm→IImmmPIR2Cu4.44fNfUUfmHlINIBH→PIRI2mmmmmmCuf和电源电压UU4.44fNB、mmmPIRH、I和Im2mCu；U120P70I2R1.75。P70PIR21.757W22CuPPP70763WFCueP250fm3U2m103VU10050I5，f1cos0.7I10A，12cos0.052UIcos10050.7350WP111P1UIcos100100.0550WP222P2P250R0.5I10222PIR50.512.5W22u1PPP35012.5337.5WF1CueVVcos1n60nSNSN3n个10103300S3I1N3.03ANU1N1010S3I2N45.45ANU2202NVW。1S10P10。cosNN103ncos0.44P100.4483n8VU。2PUIcos2225010S339cos0.8227.3AP，，INU220222N2NP39103U214.5V2Icos2N227.30.822，P2ScosN2PPPScosPP2FeCuN2FeCu100100.8396.6%100100.854622703180U101NU400，2NS，,Nf5020B。m010U3U1PVV1N33U3U2P2N3UN匝匝1P1UN2P2N1125K251N4523SI1NANU331N3SI2NANU32NBmE4.44fN4.44fNABmmEBm当N1E5.133BT1104m8N300，RL1E6N100100R20IE图RL2N2RR81NLL22E62PLR87.610072RRL0L8Ω或ΩN。23N8ΩN23.5Ω0ΩN3图ΩΩ2NR81NNL232NR1NL322NN811NNN2333.58NNN22323821N23NN81123N3.52。V。V和V2和41和3V1~110V23~110V4~6.3V图和3两和4V时，应首先将2和3端接到一起，然后再将1和4VV1和3和4V2和41和3VVVI1ii12uuR222uN11iR3333图UNNUUNN121131U23U3622012NN55090匝55030匝则2131U21UUNN22031P2U36I1A3622P24I2A3U1233