第一章測(cè)試1【單選題】(2分)Whichofthefollowingisnotacommonlyusedsemiconductormaterial'?（）A.germaniumB.carbonC.siliconD.lead2【單選題】(2分)Thecharacteristicofanidealdiodearethoseofaswitchthatcanconductcurrent（）.A.inbothdirectionsB.inonedirectiononlyC.dependsonthecircuititisusedinD.inbothdirectionsbutinonlyonedirectionatatime3【單選題】(2分)Whenadiodeisdopedwitheitherapentavalentoratrivalentimpurityitsresistancewill（）.A.decreaseB.maketheresistancestableagainstvariationduetotemperatureC.increase4【單選題】(2分)Thepiecewiselinearmodel,equivalentcircuitofthediodeconsistsof（）.A.theidealdiodeB.abatteryandtheidealdiodeC.ajunctioncapacitor,abattery,asmallresistor,andtheidealdiodeD.abattery,asmallresistor,andtheidealdiode5【單選題】(2分)Whenap-njunctionisreverse-biased,itsjunctionresistanceis（）.A.determinedbythecomponentsthatareexternaltothedeviceB.lowC.highD.constantlychanging第二章測(cè)試1【單選題】(2分)Whatisthevalueofthevoltagedroppedacrossforward-biasedsilicondiodesthatareconnectedinparallelwitheachother?（）.A.1.4VB.11.3VC.0.35VD.0.7V2【單選題】(2分)Theresistorvoltageandresistorcurrentinthiscircuitare（）.A.10V,5mAB.11V,2mAC.11V,11mAD.2V,11mA3【單選題】(2分)Whichofthefollowingcircuitsisusedtoeliminateaportionofasignal?（）.A.VoltagedividerB.ClipperC.DamperD.Voltagemultiplier4【單選題】(2分)Thecircuitshownhereisa（）.A.seriesclamperB.seriesclipperC.parallelclipperD.shuntclamper5【單選題】(2分)TheZenerdiodemustbeoperatedsuchthat（）.A.B.AlloftheseC.theappliedvoltageisgreaterthanD.islessthanthespecified第三章測(cè)試1【單選題】(2分)Intheactiveregion,thebase-emitterjunction（）.A.isforward-biasedwhilethebase-collectorjunctionisreversed-biasedB.isreverse-biasedwhilethebase-collectorjunctionisforward-biasedC.andthebase-collectorjunctionsarebothreverse-biasedD.andthebase-collectorjunctionsarebothforward-biased2【單選題】(2分)ABJThasmeasureddccurrentvaluesof=0.1mAand=8.0mA.WhenIBisvariedby100μA,ICchangesby10mA.Whatisthevalueoftheβacforthisdevice?（）.A.800B.100C.10D.803【單選題】(2分)WhenaBJTisoperatingintheactiveregion,thevoltagedropfromthebasetotheemitterisapproximatelyequaltothe（）。A.emittervoltageB.basecurrenttimesthebaseresistorC.diodedrop(about0.7V)D.basebiasvoltage4【單選題】(2分)BJTsarecommonlyusedas（）.A.theprimarycomponentsinamplifiersB.seriesdampercircuitsC.theprimarycomponentsinrectifiers5【單選題】(2分)Theconditionwhereincreaseinbiascurrentwillnotcausefurtherincreasesincollectorcurrentiscalled（）.A.cutoffB.activeoperationC.saturation第四章測(cè)試1【單選題】(2分)WhenaBJTisbiasedinthecutoffregionthecollector-to-emittervoltageistypicallyequalto（）.A.0.03VB.theemittervoltageC.thecollectorcurrenttimesthecollectorresistorD.thecollectorsupplyvoltage2【單選題】(2分)Calculatethecollector-emittervoltageforthisemitter-stabilizedcircuit.（）A.10.68VB.4.32VC.0.1335VD.14.24V3【單選題】(2分)Thedifferencebetweentheresultingequationsforanetworkinwhichannpntransistorhasbeenreplacedbyapnptransistoris（）.A.thesignassociateswiththeparticularquantitiesB.thevalueofβC.thevaluesoftheresistors4【單選題】(2分)Thetermquiescentmeans（）.A.inactiveB.atrestC.midpoint-biasedD.active5【單選題】(2分)Voltage-dividerbiasstabilityis（）.A.dependentofbetaB.dependentonalphaC.independentofbetaD.dependentonthecollectorresistor第五章測(cè)試1【單選題】(2分)Giventhisconfiguration,determinetheinputimpedanceifVS=40mV,Rsense=0.5kΩ,andtheinputcurrentis20μA.（）A.582kΩB.5.822MΩC.1.5MΩD.1,500Ω2【單選題】(2分)Thetransistormodelreplacesthe（）withthejunctiondiode'sacresistance.A.collector-basejunctionB.emitter—basejunctionC.collector-emitterjunction3【單選題】(2分)Calculatethevoltagegainforthiscircuit.（）A.-7.91B.-137.25C.-8.4D.-16.344【單選題】(2分)Atransistoramplifierhasaninputsignalappliedtoitsemitterterminalandanoutputsignaltakenfromitscollectorterminal.Theamplifierisa(n)（）.A.common-emitteramplifierB.common-collectoramplifierC.emitterfollowerD.common-baseamplifier5【單選題】(2分)Thevoltagegainofaverywell-designedcommoncollectoramplifierconfiguration,usingapnptransistor,is（）.A.intherange0.95to0.99B.about0.9C.intherange-0.95to-0.99D.about-0.9第六章測(cè)試1【單選題】(2分)Shockley'sequationdefinesthe（）oftheFETandareunaffectedbythenetworkinwhichthedeviceisemployed.A.characteristicsB.draincharacteristicsC.input/outputcharacteristicsD.transfercharacteristics2【單選題】(2分)Forann-channeldepletionMOSFET,=8mAand=-6V.If=0.8V,whatisthevalueofthedraincurrent,?（）A.10.28mAB.8mAC.10.25μAD.6mA3【單選題】(2分)TheregionoftheJFETdraincurvethatliesbetweenpinch-offandbreakdowniscalled（）.A.thesaturationregionB.theohmicregionC.theconstant-voltageregion4【多選題】(2分)InthefamilyofFETs,youcanexpecttofind（）.A.ap-channeltypeB.unipolarstructureC.ann-channeltype5【多選題】(2分)FETsusually（）.A.aresmallerinconstructionthanBJTsB.haveahigherinputimpudencethanBJTsC.arelesssensitivetotemperaturechangethanBJTs第七章測(cè)試1【單選題】(2分)Thisgraphicalsolutionrepresents（）.A.voltage-dividerbiasforann-channelJFETB.fixedbiasforann-channelJFETC.selfbiasforann-channelJFET2【單選題】(2分)Generally,itisgooddesignpracticeforlinearamplifierstohaveoperatingpointsthatcloseto（）.A.thecut-offregionB.themidpointoftheloadlineC.areclosetosaturationlevel3【單選題】(2分)WhichofthefollowingbiasingcircuitscanbeusedwithE-MOSFETs?（）A.drain-feedbackbiasB.zerobiasC.selfbiasD.current-sourcebias4【單選題】(2分)TheprimarydifferencebetweenJFETsanddepletion-typeMOSFETsis（）.A.depletion-typeMOSFETscanhavepositivevaluesofandlevelsofthatexceedB.JFETscanhaveonlypositivevaluesofC.JFETscanhavepositivevaluesofandlevelsofdraincurrentthatexceedD.depletion-typeMOSFETscanhaveonlypositiveof5【多選題】(2分)AJFETcanbebiasedinseveraldifferentways.Thecommonmethod(s)ofbiasingann-channelJFETis(are)（）.A.voltage-dividerbiasconfigurationB.self-biasconfigurationC.fixed-biasconfiguration第八章測(cè)試1【單選題】(2分)TheFETversionoftheBJT'scommon-emitterconfigurationisthe（）circuit.A.common-gateB.common-drainC.common-sourceD.common-current2【單選題】(2分)CalculatetheinputimpedanceforthisFETamplifier.（）A.B.=woulddependonthedraincurrentC.D.3【單選題】(2分)Designthiscircuitforavoltagegainof10.Youhavetocalculatethevalueofresistorand.Itisdesiredthatthetransistoroperatewitharelativelyhighvalueof.Forthisdevice,ahighvalueofisdefinedas.（）A.B.C.D.4【單選題】(2分)The（）amplifierhashighinputimpedance,lowoutputimpedance,andlowvoltagegain.A.common-sourceB.common-gateC.common-drain5【單選題】(2分)The（）FETamplifierhaslowinputimpedance,highoutputimpedance,andhighvoltagegain.A.common-drainB.common-gateC.common-source第九章測(cè)試1【單選題】(2分)CalculatethelowfrequencybreakpointduetothecapacitorforthisBJTamplifier.（）A.B.C.D.2【單選題】(2分)Ifseveralidenticalstagesofamplifiers,eachhavingtheexactsameupperandlowercutofffrequencies,areconnectedincascade,thenthebandwidthoftheresultingamplifierwill（）.A.remainunchangedB.decreaseC.increaseD.beequaltothesumofalltheindividualbandwidths3【單選題】(2分)A3-dBdropinβoccursat（）.A.B.C.D.4【單選題】(2分)NegativedBvaluesrepresent（）.A.powergainB.powerlossesC.powervaluesthatdonotchange5【單選題】(2分)Anamplifierhasamidbandpowergainof24,500.WhatisthevalueofthepowergainindBforthecircuit?（）A.43.9dBB.4.39dBC.87.78dB第十章測(cè)試1【單選題】(2分)Underdifference-modeoperation,thedifference-modevoltagegainforthiscircuitis（）.A.0.08B.80C.40D.0.03972【單選題】(2分)Theoperationalamplifierwillonlyslightlyamplifysignals（）.A.whenthesupplyvoltagesaremorethen±25VB.whenthesupplyvoltagesarelessthen±5VC.thataredifferentonboththeinputsD.thatarecommononboththeinputs3【單選題】(2分)Theinvertingandnoninvertinginputstoanop-ampareusedtodrivea(n)（）amplifier.A.invertingB.differentialC.noninvertingD.open-loop4【單選題】(2分)Whenagivenop-amphasacommon-modeinputof10V,theoutputofthedeviceis10V.Whenthedevicehasadifferentialinputof2mV,theoutputofthedeviceis10V.WhatistheCMPRofthedevice?（）A.1000:1B.5:1C.5000:1D.5,000,000:15【多選題】(2分)Thebandwidthofanamplifieris（）.A.therangeoffrequenciesoverwhichgainremainsrelativelyconstantB.therangeoffrequenciesbetweenthelowerandupper3dBfrequenciesC.therangeoffrequenciesfoundusing第十一章測(cè)試1【單選題】(2分)Iftheinputvoltageis0.25Vandtheoutputis-2.5V,thevalueofmustbe（）.A.16.0kΩB.5.0kΩC.40.0kΩD.20.0kΩ2【單選題】(2分)Theoutputvoltage,VO,isgivenby（）.A.B.C.3【單選題】(2分)Asummingintegratorisanop-ampintegratorthathas（）.A.multiplefeedbackcapacitorsB.multipleinputresistorsC.multipleinputresistorsandfeedbackcapacitors4【單選題】(2分)Asecondorderlow-passfilterhasahigh-endroll-offof（）.A.6dB/decadeB.60dB/octaveC.40dB/decadeD.20dB/octave5【單選題】(2分)Anactivefilterthatprovidesaconstantoutputforinputsignalsaboveiscalledanideal（）.A.low-passfilterB.bandpassfilterC.high-passfilter第十二章測(cè)試1【單選題】(2分)AclassBamplifier(notpush-pull)（）.A.conductsthrough180°oftheinputwaveformB.conductsthroughlessthan180°oftheinputwaveformC.conductsthrough360°oftheinputwaveformD.conductsbetween180°and360°degreesoftheinputwaveform,dependingontheamountofdcbias2【單選題】(2分)CrossoverdistortioninclassBamplifiersispreventedby（）.A.usingcomplementary-symmetrytransistorsB.biasingthetransistorsslightlyabovecutoffC.increasingtheloadresistanceD.biasingthetransistorsdeeplyintocutoff3【單選題】(2分)ThemaximumtheoreticalefficiencyofanRC-coupledclassAamplifieris（）.A.99%B.25%C.78.5%D.50%4【判斷題】(2分)Poweramplifiersaretypicallyusedtodrivelowimpedanceloads.（）A.錯(cuò)B.對(duì)5【判斷題】(2分)Thepowerthatanamplifierdeliverstoaloadisequaltothedifferencebetweenthepowerthatthecircuitdr