2025年機電英語題庫及答案一、單項選擇題1.Themainpurposeofamotoristoconvertelectricalenergyinto______.A.lightenergyB.thermalenergyC.mechanicalenergyD.chemicalenergyAnswer:C2.Whichofthefollowingisatypeofsensorusedinautomation?A.MotorB.TransformerC.ThermocoupleD.GeneratorAnswer:C3.InaPLCprogram,whatdoesthesymbol"X"represent?A.OutputB.InputC.TimerD.CounterAnswer:B4.Thegearratioinatransmissionsystemiscalculatedas______.A.outputspeeddividedbyinputspeedB.inputspeeddividedbyoutputspeedC.inputspeedmultipliedbyoutputspeedD.inputspeedminusoutputspeedAnswer:B5.Whatistheprimaryfunctionofacircuitbreaker?A.ToincreasevoltageB.TodecreasecurrentC.ToprotectagainstovercurrentD.TogenerateelectricityAnswer:C6.TheSIunitforfrequencyisthe______.A.HertzB.WattC.VoltD.AmpereAnswer:A7.Whichofthefollowingisacommonmaterialusedintheconstructionofelectriccables?A.CopperB.IronC.AluminumD.AlloftheaboveAnswer:D8.Inapneumaticsystem,whatisusedtocontroltheflowofair?A.MotorB.ValveC.ResistorD.CapacitorAnswer:B9.WhatistheprocessofconvertingACtoDCcalled?A.InductionB.RectificationC.TransmissionD.ConversionAnswer:B10.Theprincipleofoperationforasteppermotorisbasedon______.A.magneticfieldsB.electricalcurrentsC.thermalexpansionD.chemicalreactionsAnswer:A二、多項選擇題1.Whichofthefollowingaretypesofactuatorsusedinautomation?A.HydraulicactuatorsB.ElectricmotorsC.PneumaticactuatorsD.SolenoidvalvesAnswer:A,C,D2.WhatarethemaincomponentsofaPLCsystem?A.InputdevicesB.OutputdevicesC.CentralprocessingunitD.PowersupplyAnswer:A,B,C,D3.Whichofthefollowingareexamplesofelectricalquantities?A.VoltageB.CurrentC.ResistanceD.PowerAnswer:A,B,C,D4.Whatarethefunctionsofatransformerinanelectricalsystem?A.TostepupvoltageB.TostepdownvoltageC.ToincreasecurrentD.TodecreasecurrentAnswer:A,B5.Whichofthefollowingaretypesofsensorsusedinindustrialautomation?A.TemperaturesensorsB.PressuresensorsC.ProximitysensorsD.FlowsensorsAnswer:A,B,C,D6.WhataretheadvantagesofusingaDCmotoroveranACmotor?A.HigherefficiencyB.BetterspeedcontrolC.SimplerdesignD.LowermaintenanceAnswer:A,B,C,D7.Whichofthefollowingarecomponentsofahydraulicsystem?A.PumpB.CylinderC.ValveD.FilterAnswer:A,B,C,D8.Whatarethebasictypesofelectricalcircuits?A.SeriescircuitsB.ParallelcircuitsC.MixedcircuitsD.OpencircuitsAnswer:A,B,C,D9.Whichofthefollowingaresafetymeasuresinelectricalwork?A.UseofinsulatedtoolsB.GroundingC.UseoffusesD.WearingprotectivegearAnswer:A,B,C,D10.Whatarethefunctionsofacircuitbreaker?A.ToprotectagainstovercurrentB.TointerruptthecircuitincaseofafaultC.ToregulatevoltageD.TocontroltheflowofcurrentAnswer:A,B三、判斷題1.Amotorisadevicethatconvertselectricalenergyintomechanicalenergy.Answer:True2.Asensorisusedtodetectandmeasurephysicalquantitiesandconvertthemintosignals.Answer:True3.PLCstandsforProgrammableLogicController.Answer:True4.Agearratioof1:1meanstheinputandoutputspeedsarethesame.Answer:True5.Acircuitbreakerisusedtoincreasevoltageinanelectricalcircuit.Answer:False6.TheSIunitforfrequencyistheHertz.Answer:True7.Copperisacommonmaterialusedintheconstructionofelectriccables.Answer:True8.Avalveisusedtocontroltheflowofairinapneumaticsystem.Answer:True9.RectificationistheprocessofconvertingACtoDC.Answer:True10.Asteppermotoroperatesbasedonmagneticfields.Answer:True四、簡答題1.Whatisthedifferencebetweenamotorandagenerator?Answer:Amotorconvertselectricalenergyintomechanicalenergy,whileageneratorconvertsmechanicalenergyintoelectricalenergy.Insimpleterms,amotorisusedtoproducemotion,whereasageneratorisusedtoproduceelectricity.2.WhatarethemaincomponentsofaPLCsystem?Answer:ThemaincomponentsofaPLCsystemincludeinputdevices(suchassensorsandswitches),outputdevices(suchasmotorsandlights),acentralprocessingunit(CPU),andapowersupply.Thesecomponentsworktogethertocontrolandmonitorindustrialprocesses.3.Whatisthepurposeofatransformerinanelectricalsystem?Answer:Thepurposeofatransformerinanelectricalsystemistochangethevoltagelevelofanalternatingcurrent(AC)electricalsupply.Itcaneitherstepupthevoltage(increaseit)orstepdownthevoltage(decreaseit)whilemaintainingthesamepowerlevel.4.WhataretheadvantagesofusingaDCmotoroveranACmotor?Answer:TheadvantagesofusingaDCmotoroveranACmotorincludehigherefficiency,betterspeedcontrol,simplerdesign,andlowermaintenance.DCmotorsareoftenpreferredinapplicationswhereprecisecontrolandhighperformancearerequired.五、討論題1.Discusstheroleofsensorsinindustrialautomation.Answer:Sensorsplayacrucialroleinindustrialautomationbyprovidingfeedbackandmonitoringvariousphysicalquantitiesinasystem.Theydetectandmeasureparameterssuchastemperature,pressure,position,flow,andmore,andconvertthesemeasurementsintoelectricalsignals.Thesesignalsarethenusedbythecontrolsystemtomakedecisionsandadjustments,ensuringthedesiredoperationandefficiencyoftheautomatedprocess.2.Explaintheimportanceofsafetymeasuresinelectricalwork.Answer:Safetymeasuresinelectricalworkareessentialtoprotectbothworkersandequipmentfrompotentialhazards.Insulatedtoolspreventelectricalshocks,groundingprovidesapathforfaultcurrentstodissipatesafely,fusesandcircuitbreakersprotectagainstovercurrentandshortcircuits,andprotectivegearshieldsworkersfromelectricalhazards.Implementingthesesafetymeasureshelpspreventaccidents,injuries,anddamagetoequipment,ensuringasafeworkingenvironment.3.Discusstheadvantagesanddisadvantagesofusinghydraulicsystemsinindustrialapplications.Answer:Hydraulicsystemsofferseveraladvantagesinindustrialapplications,includinghighpowerdensity,precisecontrol,andtheabilitytohandleheavyloads.Theycanprovidesmoothandcontinuousmotion,makingthemsuitableforapplicationsrequiringhighforceandtorque.However,hydraulicsystemsalsohavedisadvantages,suchastheneedforaconstantsupplyofhydraulicfluid,potentialleaksandmaintenancerequirements,andthecomplexityofthesystemdesign.Additionally,hydraulicsystemscanbelessenergy-efficientcomparedtoothertypesofsystems.4.Discusstheimpactofadvancementsintechnologyonthefieldof機電一體化(Mechatronics).Answer:Adva