第1題1.Inthefollowingoptions,()doesnotbelongtothestaticcharacteristicindicatorsofsensors.AVoltageBLinearityCHysteresisDSensitivity第2題1.Inthefollowingnamesofsensors,()isclassifiedaccordingtothemeasuredphysicalquantities.AThermoelectricsensorBHumiditysensorCResistivesensorDPiezoelectricsensor第3題1.Inthefollowingnamesofsensors,()isclassifiedaccordingtothemeasuringprinciplesofsensingcomponents.ADistancesensorBAlcoholsensorCPhotosensitivesensorDInductivesensor第4題1.InHall-typespeedsensors,themeasuringprincipleis().AHall-typeBSpeedCSensorDResistive第5題1.Inthefollowingindicatorsofsensors,()belongstodynamiccharacteristics.ASpanBLinearityCStepresponseDHysteresis第6題1.Thetensileforcetobemeasuredis70N,andtherearetwoforcemeasuringinstruments.InstrumentAisofLevel0.5,withameasurementrangeof0-500N;InstrumentBisofLevel1.0,withameasurementrangeof0-100N.Whichforcemeasuringinstrumentisbetter?()AInstrumentABInstrumentBCThemeasurementaccuracyofInstrumentAisthesameasthatofInstrumentBDNotdeterminable第7題1.Ingeneral,asensorconsistsoftwocomponents,includingsensitiveelements,andtheotheris().AAmplificationcircuitBDataacquisitioncircuitCConversioncircuitDFilteringcircuit第8題1.Inthefollowingerrorclassifications,()isnotinthesamecategory.ARelativeerrorBAbsoluteerrorCRandomerrorDFiducialerror第9題1.Thesmallerperceptibleinputchangeindicates()ofthesensor.AThebetterlinearityBThesmallerhysteresisCThebetterrepeatabilityDThehighersensitivity第10題1.Thestaticindexcalibrationofthesensoristoinputaknownconstant()tothesensorandmeasureitsoutput.AStandardpowerBRegularpowerCStandardnon-powerDRegularnon-power第11題1.Thehigherresolutionofthesensorindicates()ofthesensor.AThesmallerhysteresisBThebetterrepeatabilityCThebetterlinearityDThesmallerperceptibleinputchange第12題1.Thesmallertheamountofinputchangethatthesensorcanperceive,()ofthesensor.AThebetterthelinearityBThesmallerthehysteresisCThebettertherepeatabilityDThehighertheresolution第13題1.Amongthecomponentsofthesensor,itisthe()thatdirectlyfeelsthephysicalquantityofthemeasurand.AConversionelementBSensingelementCConversioncircuitDAmplifyingElement第14題1.Theevaluationparameterthatexpressestheabilityofthesensornottochangetheinputandoutputcharacteristicsunderthesameconditionsandoveralongperiodoftimeis().AWorkinglifeBStabilityCStabilizationtimeDTemperaturedrift第15題1.Intheexperiment,measuringtheresistanceoftheresistorwiththebalancebridgeisa()measurement.ADeviationBZeroCDifferentialDOffset第16題1.Intheexperiment,measuringsmallchangesinwatertemperaturewithamercurythermometerisa()measurement.ABiasBZeroCDifferentialDOffset第17題1.Whenpurchasingalinearmeter,itisamusttoselecttheappropriatespanofinstrumentsinthesameseries.Atthistime,itmustbeconsideredthatthemeasuringrangeoftheinstrumentpurchasedshouldbeabout()ofthevaluetobemeasured.A3timesB10timesC1.5timesD0.75times第18題1.Thesymbols"Y-YZ"onasensorthatrepresent()ofthesensor.AAccuracyBCodeCSerialnumberDPrice第19題1.Adisplacementsensorhasasensitivityof()whentheinputchangesby300mmandtheoutputvoltagechangesby5mV.A1/60B1/60(mV/mm)C60D60(mm/mV)第20題1.Thehigherresolutionofthesensorindicatesthe()ofthesensor.ABetterlinearityBLowhysteresisCGoodrepeatabilityDThesmallerperceptibleinputchange第21題1.Theindicatorofthedynamiccharacteristicsofthesensoris().ASpanBSensibilityCPhase-frequencycharacteristicsDRepeatability第22題1.Non-linearityrepresentsthe()ofcalibrationcurve.AClosingtotruevalueBDeviatingfromthefittedlineCNon-coincideforwardandreversestrokesDRepeatability第1題2.Inthefollowingdescriptionofthecharacteristicsofthethermalresistancethermometer,()isincorrect.AHighmeasurementaccuracyandgoodreproducibilityBShortresponsetime,thecoldendcompensationisnotrequiredcomparedtothermocouplesCThepriceischeaperthanathermocoupleDLargethermalinertia,avoidinguseinsituationswithmechanicalvibration第2題2.Thetemperaturerangefortheuseofthermalresistanceis().A-200~600℃B-30~600℃C-10~600℃D0~600℃第3題2.Inthefollowingoptions,()doesnotbelongtothermalresistance.AArmoredthermocoupleBEndfacethermalresistanceCThermistorDExplosion-proofthermalresistance第4題2.Thelargervalueof(),thegreatertheoutputthermoelectromotiveforceofthethermocouple.AHotenddiameterBThetemperatureofthehotandcoldendsCThetemperaturedifferencebetweenthehotandcoldendsDTheconductivityofthethermalelectrode第5題2.Thermalresistorsaremadebyutilizing()ofsemiconductormaterialsthatvarywithtemperature.AVolumeBDensityCSpecificresistanceDElectrodynamicforce第6題2.Themeasuringprincipleofsnapactiontemperaturecontrolswitchis().AThermistortemperaturemeasurementBThermalresistortemperaturemeasurementCBimetallicstriptemperaturemeasurementDThermocoupletemperaturemeasurement第7題2.temperaturesensors,()candetectthousandsofdegreesCelsius.AMetalthermalresistorBThermistorCThermocoupleDBimetallicstrip第8題2.Thermocouplesutilize______toconvertthetemperatureamountto_____,widelyusedtomeasuretemperatureswithintherangeof-150℃to1800℃.APiezoelectriceffectChangeinresistancevalueBPiezoelectriceffectSizeofelectromotiveforceCThermoelectriceffectChangeinresistancevalueDThermoelectriceffectSizeofelectromotiveforce第9題2.Themostcommoncircuitconnectionmethodforthermalresistorsis().ATwo-wireSystemBThree-wireSystemCFour-wireSystemDFive-wireSystem第10題2.Thermalresistorsaremadeviathepropertyofmetalconductorsthat_____________,withatemperaturemeasurementrangeof-200℃to500℃.ATheresistancevaluedecreaseswithincreasingtemperatureBTheresistancevalueincreaseswithincreasingtemperatureCVolumeincreaseswithincreasingtemperatureDVolumedecreaseswithincreasingtemperature第11題2.Conditionsforgeneratingthermoelectricforceinthermocouplesare().AThesamematerialforthetwothermalelectrodesBThedifferentmaterialforthetwothermalelectrodesCThedifferenttemperaturesattheoppositeendofthetwothermalelectrodesDThesametemperaturesattheoppositeendofthetwothermalelectrodes第12題2.TheT-terminalofathermocoupleiscalled().AReferenceBFreeendCWorkingendDColdend第13題2.Thetemperaturereflectsthe()insideanobject.AIntensityofelectronicmovementBIntensityofprotonmovementCIntensityofatomicmovementDIntensityofmolecularmovement第14題2.Thehigherthevalueof(),thegreaterthethermoelectricpowerofthethermocouple'soutput.AHotenddiameterBThetemperatureofthehotandcoldendsCThetemperaturedifferencebetweenthehotandcoldendsDTheconductivityofthethermalelectrode第15題2.Thermocouplesensorsconverttemperaturechangesinto()changes.ACurrentBResistanceCPulsesignalDElectricpotentialdifference第16題2.Inthefollowingoptions,()isnotthecoldendtemperaturecompensationmethodofthermocouples.AColdendconstanttemperatureBInstrumentmechanicalzeroadjustmentCBridgecompensationDThree-wiresystem第17題2.Whenthetemperatureof95degreesFahrenheitisconvertedtoCelsius,itis().A30B35C40D45第18題2.Inthefollowingoptions,()isincorrectdescriptionofthermalresistors.AWiderangeofresistancevalues(commonly1kto10Mohms)BSimplestructureandsmallvolumCCheappriceDGoodlinearity第19題2.TheThermalresistorCu50represents().APlatinumthermistor,witharesistancevalueof50ohmsat0degreesCelsiusBPlatinumthermistor,witharesistancevalueof50ohmsat25degreesCelsiusCCopperthermistor,witharesistancevalueof50ohmsat0degreesCelsiusDCopperthermistor,witharesistancevalueof50ohmsat25degreesCelsius第20題2.Thetemperaturesensorthatcanbeusedtomeasurethetemperatureofobjectsthatcannotbedirectlycontactedis().AThermocoupleBColorimetricCThermalresistorDSemiconductordiode第21題2.Thefollowing()temperaturesensorsarecontacttemperaturesensors.ACompleteradiationBLuminanceCResistiveDInfrared第22題2.Theuseofathreewiresysteminthethermalresistancemeasurementconversioncircuitisfor().AImprovingmeasurementsensitivityBReducingnon-linearerrorCImprovingelectromagneticcompatibilityDReducingtheimpactofconnectingwireresistanceTEST3第1題3.Thecurrentgeneratedbyaphotodiodewhenthereisnolightiscalled().ADarkcurrentBLightcurrentCPhotocurrentDOn-current第2題3.Undertheactionofphotoelectricity,thephenomenonofelectronsescapingfromthesurfaceofanobjectiscalledthe()effect.AInternalphotoelectricBExternalphotoelectricCThermoelectricDPhotovoltaic第3題3.Soundsensitivesensorsreceive()informationandconvertitintoelectricalsignals.AForceBSoundCLightDPosition第4題3.Inthefollowingstatements,()isincorrect.AAnyobjectthatismakingasoundmustbevibratingBObjectsthatarevibratingmaynotnecessarilyemitaudiblesoundsCThesoundofwoodenfishisnotgeneratedbyvibrationDSoundtravelsfasterinsolidsthaninliquidsandair第5題3.Inthefollowingoptions,()isincorrectdescriptionofsounddetection.ASounddetectionistheprocessofconvertingsoundinformationintoelectricalsignalsBSounddetectionisoftennotmeasuringdecibels,butobtainingclearsoundinformationCThedefinedhearingthresholdfordecibelsinairis20μPa,thissoundcanbeusedtodetermineifthereisaproblemwiththeearsDSoundwavescanbeusedtodetectdistance第6題3.Thefrequencyrangeofhumanearhearingis().A10Hz—1000HzB10Hz—10000HzC20Hz—2000HzD20Hz—20000Hz第7題3.Theoperatingconditionsofthelight-emittingdiodeare().AApplyingforwardbiasBHeatingCApplyingreversebiasDLighting第8題3.Thefrequencyrangeofsoundwavesthatcanbeheardbythehumanearis().A20Hz~20000HzB40Hz~40000HzClessthan20HzDGreaterthan200kHz第9題3.Inthefollowingfourmicrophones,()istheleastsuitablefornoisyenvironments.AOmnidirectionaltypeBHeart-shapedCUltra-CardioidDFigure8第10題3.Themagnitudeofthephotocurrentgeneratedbythephotodiodemainlydependson().AReversebiasBLoadresistanceCLightintensityDTemperatureTEST4第1題4.Absoluteencoderoutputphaseof1024lineis().A4B6C8D10第2題4.Inthefollowingoptions,()isincorrectdescriptionofultrasonicsignals.AUltrasoundreferstosoundwaveswithafrequencygreaterthan25KHzBGeneralrangingultrasoundis40KHzCGeneralrangingultrasoundis200KHzDTheultrasonicsignalsforthicknessmeasurementandflawdetectioncanuse1M,2.5M,and5MHz第3題4.Therearemultiplecategoriesofproximityswitchsensors,and()isnotcommonforproximityswitchsensors.AInductivetypeBPhotoelectrictypeCHalltypeDPiezoelectrictype第4題4.Whendetectingthepositionofnon-metallicmaterials,suchaswood,paper,plastic,etc.,thepositiondetectionsensorthatshouldbeselectedis().AInductiveproximityswitchBCapacitiveproximityswitchCHall-typeproximityswitchDNoneoftheaboveistrue第5題4.Inthefollowingoptions,()isnotpartofthecapacitiveproximityswitch.AHigh-frequencyoscillationcircuitBDetectioncircuitCAmplificationcircuitDInputcircuit第6題4.Amongthefollowingmaterials,thevelocityofsoundin()isthelowest.AAirBWaterCAluminiumDStainlesssteel第7題4.Eddy-currentproximityswitchescandetecttheproximityof()viatheeddy-currentprinciple.AHumanbodyBWaterCMetalpartsDPlasticparts第8題4.Thesignaloutputbytheincrementalpositionsensoris().AAnalogcurrentsignalBAnalogvoltagesignalCPulsesignalDBinaryGrayCodeTEST5第1題5.Theconversionofultrasonicwaves(mechanicalvibrationwaves)intoelectricalsignalsisachievedvia()ofpiezoelectricmaterials.AStraineffectBPiezoelectriceffectCEddycurrenteffectDCapacityeffect第2題5.Inthefollowingoptions,()isnotpiezoelectricmaterial.AQuartzcrystalBSinglecrystalsiliconCBimetallicstripDPolycrystallineceramics第3題5.Factorsthatcausemeasurementerrorsofpiezoelectricloadcellsdonotinclude().AAmbienttemperatureBHumidityCElectroammonianoiseDAdynamicforcemeasured第4題5.Regardingatmosphericpressure,()iscorrectATheatmosphericpressureisequaltotheheightofthemercurycolumnof760cmBThevalueofatmosphericpressureisvariedindifferentplacesCThevalueofatmosphericpressureinthesameplacewillneverchangeDAtmosphericpressureincreaseswithaltitude第5題5.Suckjuicefromabottlewithaplastictubebecause().ATheattractedforcetofruitjuiceisgeneratedbythehumanbodyinsideBThepersonsucksoutthegasinthetubewiththemouthtoreducetheairpressureinthetube,andtheatmosphericpressuremakesthejuicerisealongthetubeCThesuctiontubeitselfhasawaterabsorptioneffectDThejuiceitselfgeneratesalargepressure第6題5.Theresistanceofametalwirechangeswiththemagnitudeofthemechanicaldeformation(stretchorcompression)towhichitissubjected,thisphenomenoniscalledmetal().AResistancedeformationeffectBResistancestraineffectCPiezoelectriceffectDPiezoresistiveeffect;第7題5.Amongthefollowingtypesofloadcells,theonethatbelongstothepowergenerationis().AInductivetypeBCapacitivetypeCPiezoDStrain-based第8題5.Theworkingprincipleofsemiconductorstraingaugesisbasedon().AStraineffectBThermoelectriceffectCPiezoelectriceffectDPiezomagneticeffect第9題5.Whensomecrystalsaredeformedbyanexternalforceinacertaindirection,theircorrespondingtwooppositesurfacesproduceanoppositepolaritycharge,andthechargedisappearswhentheexternalforceisremoved,thisphysicalphenomenoniscalled().APiezoresistiveeffectBPiezoelectriceffectCStraineffectDHalleffect第10題5.Inpiezoelectricpressuresensors,thepiezoelectricelementconvertsthemeasurandinto().AChargeorvoltageoutputBCurrentorvoltageoutputCCapacityorvoltageoutputDInductanceorvoltageoutputTEST6第1題6.Inthefollowingdescriptionofinfraredcharacteristics,()isincorrect.AInfraredraysareelectromagneticwaves,justlikevisiblelightBInfraredrayisinvisiblelightandhasashorterwavelengththanvisiblelightCAnyobjectwiththetemperatureaboveabsolutezeroradiatesinfraredraysoutwardDPyroelectricinfraredsensorscandistinguishbetweenhumansandmammals第2題6.Inthefollowingdescriptionofinfraredcharacteristics,()isincorrect.AInfraredraysareelectromagneticwaves,justlikevisiblelightBInfraredrayisinvisiblelightandhasashorterwavelengththanvisiblelightCAnyobjectwiththetemperatureaboveabsolutezeroradiatesinfraredraysoutwardDObjectswithdifferenttemperaturesradiateinfraredraywithdifferentwavelengths第3題6.Thermoelectricelementoutputsachargesignal,whichcannotbedirectlyused,soitshallbeconvertedinto()usingaresistor.AChargeBCurrentCResistanceDVoltage第4題6.Inthefollowingdescriptionsofpyroelectricinfraredsensors,thedisadvantageis().ALowpriceBLowpowerconsumptionofcomponentCGoodinvisibilityDPoorpassiveinfraredpenetration第5題6.Thesensitivityofpyroelectricinfraredsensorstothehumanbodyandthemovementdirectionofhuman()AIsirrelevantBIscloselyrelatedCIslessrelatedDIscloselyorlessrelated第6題6.Therearemanytypesofnon-contactsensors,andinthefollowingoptions,()arenon-contactsensors.APressuresensorBSoilmoisturesensorCPyroelectricinfraredsensorDThermistorsensor第7題6.Thethermoelectriccoefficientofapyroelectricinfraredsensoris()thethermoelectriccoefficientinsideathermocoupleAFarsmallerthanBSmallerthanCFarlargerthanDLargerthan第8題6.Thechargegeneratedbythepyroelectriceffectisnotpermanent,andaslongasitappears,itwillsoonbeboundby()intheair.ACarbondioxideBNitrogengasCSingleionDOxygengasTEST7第1題7.TherelationshipbetweenthemagnitudeofHallelectromotiveforceandtheexcitationcurrent/andmagneticfluxdensityBis()AEqualBProportionalCInverseproportionDNotsure第2題7.Whendetectingthepositionofmagneticsubstances,suchaspermanentmagnets,magneticsteel,etc.,thebestpositiondetectionsensoris().AInductiveproximityswitchBCapacitiveproximityswitchCHall-typeproximityswitchDNoneoftheaboveistrue第3題7.InthefollowingstatementsaboutthecharacteristicsofHallswitches,()isincorrect.AShortservicelifeBNosparkinterferenceCGoodtemperaturecharacteristicsDAdaptingtoharshenvironments第4題7.Hallelementsare()elementsmadeviatheHalleffect.AMagnetosensitiveBPhotosensitiveCForcesensitiveDThermo-sensitive第5題7.ThesemiconductorsliceisplacedinamagneticfieldwithmagneticfluxdensityB,thedirectionofthemagneticfieldisperpendiculartotheslice,andwhenacurrentIflowsthroughtheslice,anelectromotiveforceEuwillbegeneratedperpendiculartothedirectionofthecurrentandmagneticfield,thisphenomenoniscalled().AStraineffectBHalleffectCGreen-houseeffectDHertzeffect第6題7.ThestrongermagneticfieldstrengthBactingonthesemiconductorsliceindicatesthattheHallelectromotiveforceis(）.AUnchangedBHigherCLowerDUnsure第7題7.Inthefollowingoptions,()istheadvantageoftheHallsensor.AFastresponsetimeBLowtemperaturedriftCHighaccuracyDAlloftheabove第8題7.Inthefollowingoptions,()isincorrectdescriptionfortheHallsensor.AFastresponsetimeBLowtemperaturedriftCLow