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《电气工程专业英语》试卷一、根据英文单词，写出中文意义（20X0.5=10,共10分）alternator交流发电机automation自动控制，自动操作bandwidth带宽，频带宽度built-in内置的，固定的，嵌入的capacitance容量，电容charge负荷，电荷，费用，充电coil线圈converter转换器，变换器diode二极管impedance阻抗，全电阻insulator绝缘体semiconductor半导体sensor传感器suppression抑制switch开关，电闸threshold临界值vacuum真空，空间vector向量，矢量waveform波形ammeter电表二、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Approximationn.能力，性能，容量Capabilityv.补偿,偿还Compensaten.损耗Depletionadj.微分的Differentialn.打扰,干扰Disturbancen.以太网Ethernetn.频率,周率Frequencyadj.不相容的,矛盾的Contradictionn.隔绝,绝缘Isolationadj.瞬间的,刹那间的Momentaryn.极性Polarityn.转发器,中继器Repeatern.排斥Repusionn.阻力，电阻，阻抗Resistancevt.模拟,模仿Simulaten.晶体管Transistorn.传感器，发送器，传递器Transmittern.阀Valven.波长Wavelength三、根据英文词组，写出中文意义（30X0.5=15,共15分）between…and在……之间ontheotherhand另一方面takeadvantageof利用negativecharge负电荷electricfield电场freeelectron自由电子currentflow电流sinewave正弦波Root-Mean-Square均方根（值）seriescircuit串联电路voltagedrop电压降parallelcircuit并联电路compoundcircuits复合电路parallelbranch并联分支decimalsystem十进制系统programmablecontroller可编程控制器truthtable真值表carbonbrus碳刷permanentmagnet永久磁铁armaturefield电枢场magneticlines磁力线proportionalsystem比例系统samplingperiod采样周期analogsignal模拟信号baudrate波特discreteinput开关量输入limitswitch限位开关proximityswitch接近开关industrialbus工业总线voltagedifference电压差四、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PLCProgrammablelogiccontroller可编程逻辑控制器PPIPoint-to-pointinterface点一点接口CNCComputerizednumericalcontrol计算机数值控制EIAElectronicindustriesassociation电子工业联合会RFRadiofrequency射频，无线电频率FCCFederalcommunicationscommission（美国）通信委员会CMOSComplementarymetal-oxide-semiconductortransistor互补金属氧化物半导体MOSFETMetallicoxidesemiconductorfieldeffecttransistor金属氧化物半导体场效应晶体管VLSIVerylargescaleintegration超大规模集成电路CEMFCounterelectromotiveforce反电动势五、根据下列方框中所给的词填空（5X1=5,共5分）wirescurrentresistanceheatcoolproducescollisionshotResistanceinamaterialarisesfromthecollisionofelectronswiththeatomsandwitheachotherastheymove.The___1、collisions___produceheat,increasingthetemperatureofthematerial.Considertheordinarytoaster.Currentflowsthroughthe___2、wires___ofthepowercordandthroughthetoaster'sfilament(theglowingwireyouseeinside).Thesamecurrentmustflowinthepowercordasflowsthroughthefilament.Thecordhasverylittle___3、resistance___,whilethefilamenthasconsiderablymore.Sincethefilamenthasamuchhigherresistancethanthecord,it___4、produces___muchmoreheat.That'sasitshouldbe.Youwanttheheatforyourtoast,butyoudonotwantthepowercordgetting___5、hot___!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?Electricpotentialiswhatdivescurrent.Thetermpeoplewilluseisvoltage.2.Whatisthepotentialbetweenthetwoslotsinahouseholdelectricaloutlet?Thepotentialbetweenthetwoslotsinahouseholdelectricaloutletisabout120V.3.Whatistherelationshipbetweenthepotentialandthecurrentwhenallotherthingsareequal?Thegreaterthepotentialthegreaterthecurrent.4.Whatcanbeagoodanalogy(althoughfarfromperfect!)forbothcurrentandpotential?Water.5.Whatisanalogoustocurrent?Theflowrateofthewaterisanalogoustocurrent.6.Whatisanalagoustoelectricpotential?Theheightofthewaterlevelisanalogoustoelectricpotential.7.Whatismoreanalogoustothewaterpump?Abatteryismoreanalogoustothewaterpump.8.Whatisabattery?Abatteryisanelectronpump.9.Whatcanabatterydo?Andhow?Itcanpushelectronsdirectlypr