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1、Solvethefollowingproblems.(100points)1、(6points)FindUabinthecircuitinFigure1.2、(8points)FinduoandiointhecircuitinFigure2.3、(6points)InthecircuitofFigure3,readingsofvoltmeter，andare10V,18Vand6V,respectively.Pleasedeterminatethereadingofthevoltmeter.4、(8points)Theresona
2、ntortunercircuitofaradioisportrayedinFigure4,whereus1representsabroadcastsignal,giventhatR=10Ω，L=200μH,Us1rms=1.5mV，f1=1008kHz.Ifthecircuitisresonantwithsignalus1,pleasedeterminate:(1)thevalueofC;(2)thequalityfactorQofthecircuit;(3)thecurrentIrms;(4)thevoltageUcrms.5、
3、(8points)Abalancedthree-phasecircuitisshowninFigure5.Calculatethephasecurrentsandvoltagesinthedelta-connectedloadZ,if,Z=(24+j15)Ω，ZL=(1+j1)Ω.6、(8points)FindtheyparametersforthecircuitinFigure6.7、(15points)Forthecircuitinfigure7,findthermsvalueofthecurrentiandtheaverag
4、epowerabsorbedbythecircuit,giventhat,,,,.8、(12points)InthecircuitofFigure8,determinatethevalueofZthatwillabsorbthemaximumpowerandcalculatethevalueofthemaximumpower.9、(14points)IftheswitchinFigure9hasbeenclosedforalongtimeandisopenedatt=0,finduc,iL,ukfort≥0.10、(15point
5、s)TheswitchinFigure10hasbeeninpositionaforalongtime.Att=0,itmovestopositionb.Findi2(t)fort≥0andsketchit.(Attention:Pleasemarkthekeydatainyourgraph.)Solvethefollowingproblems.(100points)1、(6points)FindUabinthecircuitinFigure1.Solution:Uab=9V2、(8points)Finduoandiointhec
6、ircuitinFigure2.Solution:,3、(6points)InthecircuitofFigure3,readingsofvoltmeter，andare10V,18Vand6V,respectively.Pleasedeterminatethereadingofthevoltmeter.Solution:Thereadingofthevoltmeteris10V.4、(8points)TheresonantortunercircuitofaradioisportrayedinFigure4,whereus1rep
7、resentsabroadcastsignal,giventhatR=10Ω，L=200μH,Us1rms=1.5mV，f1=1008kHz.Ifthecircuitisresonantwithsignalus1,pleasedeterminate:(1)thevalueofC;(2)thequalityfactorQofthecircuit;(3)thecurrentIrms;(4)thevoltageUcrms.Solution:5、(8points)Abalancedthree-phasecircuitisshowninFi
8、gure5.Calculatethephasecurrentsandvoltagesinthedelta-connectedloadZ,if,Z=(24+j15)Ω，ZL=(1+j1)Ω.Solution:,6、(8points)Findtheyp
