电气专业英语试卷-复习C卷

第1页共4页电气专业英语试卷复习卷3一.中英文单词互译.(1’*25=25’)1．inductor2．sensor3．manufacture4．insulator5．conductor6．current7．normallyopen8．voltage9．shaft10．switch11.工件12．链传动13．发电机14．旋转15．螺钉16．万用表17．继电器18．气动19．加速度20．齿轮21．螺纹22．车床23．参观24．连轴器25．铣床二．根据英文词组，写出中文意义（2’*10=20’）surfaceprocessingdemandindustrialrobotsshowdailymaintenanceelectricfielddrillingmachinespindlegearboxmanufacturingdepartmentrotarypartparallelcircuitprogramminglanguage三．英文翻译成中文(30*1=30’)1．Beforemeasuringaresistance,itisimportanttocheckthezeroadjustment..Theprocedureisasfollow:(1)Settherangeselectorswitchonthedesiredrange.(2)Connectthetestleadstogether.Theindicatingneedleshouldpointtozero.(3)Iftheneedleisnotalignedwithzeroline,turnthezeroadjustmentuntiltheneedle第2页共4页andthezerolinearealigned.Note:Donotleavethetestleadsconnectedtogether,becauseunderzeroresistancethebatterieswilldeterioraterapidly.(4)CAUTION:Besurethecircuitisdeenergized.(5)Connectthetestleadsacross(inparallelwith)thecomponentorcircuittobemeasured.四、根据英文缩写，写出英文完整形式及中文意思（2’*5=10’）五．根据下列方框中所给的词填空（1’*5=5’）wirescurrentresistanceheatcoolproducescollisionshotResistanceinamaterialarisesfromthecollisionofelectronswiththeatomsandwitheachotherastheymove.The___1___produceheat,increasingthetemperatureofthematerial.Considertheordinarytoaster.Currentflowsthroughthe___2___ofthepowercordandthroughthetoaster'sfilament(theglowingwireyouseeinside).Thesamecurrentmustflowinthepowercordasflowsthroughthefilament.Thecordhasverylittle___3___,whilethefilamenthasconsiderablymore.Sincethefilamenthasamuchhigherresistancethanthecord,it___4___muchmoreheat.That'sasit英文完整形式中文意思PLCACCNCDCFMS第3页共4页shouldbe.Youwanttheheatforyourtoast,butyoudonotwantthepowercordgetting___5___!Thestandardincandescentlightbulbisanotherexample.Thefilamentinthelightbulbglowswhitehot(hence,thewordincandescent)toproducelightandalotofheataswell.But,thelow-resistancepowercordstayscool.六．根据下列短文回答问题,回答请使用英文。（2’*5=10’）ElectricPotentialElectricpotentialiswhatdrivescurrent.Youmayknowelectricpotentialbyanothertermthatwewilluse...voltage.Thisnamecomesfromtheunitofpotential,whichisthevolt(denotedV).WhenyoubuyanAAbattery,youarebuyingadevicethatprovidesapotentialof1.5Vbetweenitspositiveandnegativeterminals.Yourcarbatterymaintainsabout12Vbetweenitsterminals.Andthepotentialbetweenthetwoslotsinahouseholdelectricaloutletisabout120V.Youareprobablyalreadyfamiliarwithabasictruthaboutelectricpotential.Allotherthingsbeingequal,agreaterpotentialwillcreateagreatercurrent.Butwhatiselectricpotential?Watercanprovideagoodanalogy(althoughfarfromperfect!)forbothcurrentandpotential.Considerapipethatcomesoutofthebottomofalargetankofwater.Youopenthespigotandwaterflows.Theflowrateofthewaterisanalogoustocurrent.Commonsensetellsyouthatthehigherthewaterlevelinthetank,thehighertheflowrateinthepipe.Theheightofthewaterlevelisanalagoustoelectricpotential.Agreaterpotentialwillcauseagreatercurrent.Wherethisanalogyfailsiswiththebattery.Thetankstoreswaterandastheheightslowlydecreases,sodoesthewaterflow.Abatterydoesnotstorecharge!Itisalwayselectricallyneutralandforwhateveramountofchargeleavesoneterminal,anequalamountmustcomeintotheother.Abatteryismoreanalogoustothewaterpump.Abattery,therefore,isanelectronpump!Ithastheabilitytopushelectronsdirectlyproportionaltoitsvoltagerating.And,itdoesthisthroughachemicalreaction.Thebatterybecomesdischarged,(anunfortunatelymisleadingterm),whenthechemicalsinthebatteryareusedup.Mostbatteriesmaintainafixedpotentialuntilneartheendoftheirlife.The120Vpotentialofahouseholdoutletisproducedinaverydifferentway.1.Whatisanalagoustoelectricpotential?2.Whatismoreanalogoustothewaterpump?3.Whatisabattery?第4页共4页4.Whatcanabatterydo?Andhow?5.Whatdomostbatteriesmaintainuntilneartheendoftheirlife?