电气英语参考试卷

电气工程专业《电气工程专业英语》试卷第1页共4页《电气工程专业英语》试卷考试时间：_120_分钟闭卷班级：学号：姓名：成绩：一、根据英文单词，写出中文意义（20X0.5=10,共10分）alternatorautomationbandwidthbuilt-incapacitancechargecoilconverterdiodeimpedanceinsulatorsemiconductorsensorsuppressionswitchthresholdvacuumvectorwaveformammeter二、根据中文意义，写出英文单词（20X0.5=10,共10分）n.近似值,接近,走近n.能力，性能，容量v.补偿,偿还n.损耗adj.微分的n.打扰,干扰n.以太网n.频率,周率adj.不相容的,矛盾的n.隔绝,绝缘adj.瞬间的,刹那间的n.极性n.转发器,中继器n.排斥n.阻力，电阻，阻抗vt.模拟,模仿n.晶体管n.传感器，发送器，传递器n.阀n.波长三、根据英文词组，写出中文意义（30X0.5=15,共15分）between…andontheotherhandtakeadvantageofnegativechargeelectricfieldfreeelectroncurrentflowsinewaveRoot-Mean-Squareseriescircuitvoltagedropparallelcircuitcompoundcircuitsparallelbranchdecimalsystem班级：学号：姓名：2006/2007学年第一学期电气工程专业《电气工程专业英语》试卷第2页共4页programmablecontrollertruthtablecarbonbruspermanentmagnetarmaturefieldmagneticlinesproportionalsystemsamplingperiodanalogsignalbaudratediscreteinputlimitswitchproximityswitchindustrialbusvoltagedifference四、根据英文缩写，写出英文完整形式及中文意思（10X2=20,共20分）英文完整形式中文意思PLCPPICNCEIARFFCCCMOSMOSFETVLSICEMF五、根据下列方框中所给的词填空（5X1=5,共5分）wirescurrentresistanceheatcoolproducescollisionshotResistanceinamaterialarisesfromthecollisionofelectronswiththeatomsandwitheachotherastheymove.The___1___produceheat,increasingthetemperatureofthematerial.Considertheordinarytoaster.Currentflowsthroughthe___2___ofthepowercordandthroughthetoaster'sfilament(theglowingwireyouseeinside).Thesamecurrentmustflowinthepowercordasflowsthroughthefilament.Thecordhasverylittle___3___,whilethefilamenthasconsiderablymore.Sincethefilamenthasamuchhigherresistancethanthecord,it___4___muchmoreheat.That'sasitshouldbe.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。（10X1=10,共10分）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.Whatiselectricpotential?Whatisanothertermpeoplewilluseforit?班级：学号：姓名：2006/2007学年第一学期电气工程专业《电气工程专业英语》试卷第3页共4页2.Whatisthepotentialbetweenthetwoslotsinahouseholdelectricaloutlet?3.Whatistherelationshipbetweenthepotentialandthecurrentwhenallotherthingsareequal?4.Whatcanbeagoodanalogy(althoughfarfromperfect!)forbothcurrentandpotential?5.Whatisanalogoustocurrent?6.Whatisanalagoustoelectricpotential?7.Whatismoreanalogoustothewaterpump?8.Whatisabattery?9.Whatcanabatterydo?Andhow?10.Whatdomostbatteriesmaintainuntilneartheendoftheirlife?七、根据下列短文填空（10X1=10,共10分）Forcesbetweentwoelectrically-chargedobjectscanbeextremelylarge.Mostthingsareelectricallyneutral;theyhaveequalamountsofpositiveandnegativecharge.Ifthiswasn’tthecase,theworldweliveinwouldbeamuchstrangerplace.Wealsohavealotofcontroloverhowthingsgetcharged.Thisisbecausewecanchoosetheappropriatematerialtouseinagivensituation.Metalsaregoodconductorsofelectriccharge,whileplastics,wood,andrubbersarenot.Theyarecalledinsulators.Chargedoesnotflownearlyaseasilythroughinsulatorsasitdoesthroughconductors,whichiswhywiresyouplugintoawallsocketarecoveredwithaprotectiverubbercoating.Chargeflowsalongthewire,butnotthroughthecoatingtoyou.Materialsaredividedintothreecategories,dependingonhoweasilytheywillallowcharge(i.e.,electrons)toflowalongthem.Theseare:conductors-metals,forexamplesemi-conductors-siliconisagoodexampleinsulators-rubber,wood,plasticforexampleMostmaterialsareeitherconductorsorinsulators.Thedifferencebetweenthemisthatinconductors,theoutermostelectronsinthe