电路与模拟电子技术第五章习题解答范文

勿忘国耻当思国运.抚今追昔,百感化作一念：当苦日子离去的时间越久远,当富日子光临的越急匆,我们心系国家、民族的命运thesamedirectionofrotation90°or180°for;aftereachdiscrotorwhenmeasuringpositionalignmentofthetwohalfcouplingconstant,shouldalsobeintermsofaccuracyandconsistency.Surfacedeviationmeasurement,mustinevery180degreescorrespondingtothetworadiiareequaltoeachotherinordertoeliminateerrorscausedbymovementoftherotor.Onlyasupportbearingoftherotor,WAcouplings,suchastheuseoftemporaryleavetheCenter,shouldpayattentiontokeeptherotorinthemeasuringprocessinthecenterofthebearingoilretainingthenestdoesnotchange.Steamoilblock,thereshouldbesufficientclearancebetweentherotorand,inrotorsmakesurerotorisnotontheblockorsealoil.Atthetimeofmeasurement,connectionsarenotallowedbetweentworotors,eachinafreeState.Notallowedincaseofassembledsleeve,Centerworkonthetoothedcoupling.Couplingtoolshouldhaveadequatestiffness,installationmustbesecureandreliable.CouplingCenterusingadialindicator,thetableshouldbeputinprisonandavoidtouching,toensurecorrectmeasurement.Couplingdiscafteraweektoreturntotheoriginalposition,circumferenceofdialgaugereadingshouldbeabletogobacktotheoriginalvalue.Whenmeasuringtheclearanceofend,intothefeelerofthegapshouldnotexceedfouratatime,whenthegapistoolarge,youcanusethegasketwiththefeelergaugemeasurementofgaugeblocksorfinishing.bearingsurface,markupshouldbeinaccordancewiththemountingsupportpads,andretestthethickness.Oncetheliftingcylindermeasurementofsurfaceandinternalcylindersurfaceheightdifference,comparedwiththeoriginalvaluesconfirmthelocation.Internalverticalandhorizontalcylinderunderstatekeyinsertioninstallationcomplexmeasuringcylinderinaxialposition.Bottom第五章习题5.1题5.1图所示各电路在换路前都处于稳态，求换路后电流i的初始值和稳态值。解：（a）AiiLL326)0()0(，换路后瞬间AiiL5.1)0(21)0(稳态时Ai326（b）VuuCC6)0()0(，换路后瞬间02)0(6)0(Cui稳态时Ai5.1226（c）AiiLL6)0()0(11，0)0()0(22LLii换路后瞬间t=0t=0t=0t=0(a)(b)(d)(c)CCL2Ω2Ω2Ω2Ω2Ω2Ω2Ω2ΩL1L2+6V-+6V-+6V-6A题5.1图iiii勿忘国耻当思国运.抚今追昔,百感化作一念：当苦日子离去的时间越久远,当富日子光临的越急匆,我们心系国家、民族的命运thesamedirectionofrotation90°or180°for;aftereachdiscrotorwhenmeasuringpositionalignmentofthetwohalfcouplingconstant,shouldalsobeintermsofaccuracyandconsistency.Surfacedeviationmeasurement,mustinevery180degreescorrespondingtothetworadiiareequaltoeachotherinordertoeliminateerrorscausedbymovementoftherotor.Onlyasupportbearingoftherotor,WAcouplings,suchastheuseoftemporaryleavetheCenter,shouldpayattentiontokeeptherotorinthemeasuringprocessinthecenterofthebearingoilretainingthenestdoesnotchange.Steamoilblock,thereshouldbesufficientclearancebetweentherotorand,inrotorsmakesurerotorisnotontheblockorsealoil.Atthetimeofmeasurement,connectionsarenotallowedbetweentworotors,eachinafreeState.Notallowedincaseofassembledsleeve,Centerworkonthetoothedcoupling.Couplingtoolshouldhaveadequatestiffness,installationmustbesecureandreliable.CouplingCenterusingadialindicator,thetableshouldbeputinprisonandavoidtouching,toensurecorrectmeasurement.Couplingdiscafteraweektoreturntotheoriginalposition,circumferenceofdialgaugereadingshouldbeabletogobacktotheoriginalvalue.Whenmeasuringtheclearanceofend,intothefeelerofthegapshouldnotexceedfouratatime,whenthegapistoolarge,youcanusethegasketwiththefeelergaugemeasurementofgaugeblocksorfinishing.bearingsurface,markupshouldbeinaccordancewiththemountingsupportpads,andretestthethickness.Oncetheliftingcylindermeasurementofsurfaceandinternalcylindersurfaceheightdifference,comparedwiththeoriginalvaluesconfirmthelocation.Internalverticalandhorizontalcylinderunderstatekeyinsertioninstallationcomplexmeasuringcylinderinaxialposition.Bottom44AiiiLL606)0()0()0(21稳态时0i（d）2(0)(0)6322CCuuV换路后瞬间6(0)63(0)0.75224CuiA稳态时Ai122265.2题5.2图所示电路中，S闭合前电路处于稳态，求uL、iC和iR的初始值。解：换路后瞬间AiL6，VuC186306LRii031863CLCuii0RCLRiuu，VuuCL185.3求题5.3图所示电路换路后uL和iC的初始值。设换路前电路已处于稳态。解：0t，0Li，4mA电流全部流过R2，即(0)4CimA由于(0)(0)0CCuu，故2(0)(0)3412LCuRiV5.4题5.4图所示电路中，换路前电路已处于稳态，求换路后的i、iL和uL。解：对RL电路，先求)(tiL，再求其它物理量。t=0iCS6Ω3Ω+uL-iR6A题5.2图CiCSR2R12kΩ4mAL3kΩ+uL-题5.3图t=0C勿忘国耻当思国运.抚今追昔,百感化作一念：当苦日子离去的时间越久远,当富日子光临的越急匆,我们心系国家、民族的命运thesamedirectionofrotation90°or180°for;aftereachdiscrotorwhenmeasuringpositionalignmentofthetwohalfcouplingconstant,shouldalsobeintermsofaccuracyandconsistency.Surfacedeviationmeasurement,mustinevery180degreescorrespondingtothetworadiiareequaltoeachotherinordertoeliminateerrorscausedbymovementoftherotor.Onlyasupportbearingoftherotor,WAcouplings,suchastheuseoftemporaryleavetheCenter,shouldpayattentiontokeeptherotorinthemeasuringprocessinthecenterofthebearingoilretainingthenestdoesnotchange.Steamoilblock,thereshouldbesufficientclearancebetweentherotorand,inrotorsmakesurerotorisnotontheblockorsealoil.Atthetimeofmeasurement,connectionsarenotallowedbetweentworotors,eachinafreeState.Notallowedincaseofassembledsleeve,Centerworkonthetoothedcoupling.Couplingtoolshouldhaveadequatestiffness,installationmustbesecureandreliable.CouplingCenterusingadialindicator,thetableshouldbeputinprisonandavoidtouching,toensurecorrectmeasurement.Couplingdiscafteraweektoreturntotheorigin