电气工程专业英语试卷及参考答案
电气工程及其自动化专业英语答案
第一章⚫Section1习题答案一.Choose the best answer into the blank1.B2.D3.C4.A5.B二.Answer the following questions according to the text1.No. The current need not be a constant-valued function because charge can vary with2.Time.2.The current increases when the time rate of charges is greater.3.The uab=-1V can be interpreted in two ways:①point b is 1 V higher than point a;②the Potential at point a with respect to point b is -1V.4.w=∫pdt5.Because by the passive sign convention,current enters through the positive polarity ofThe voltage,p=ui>0 implies that the element is absorbing power and p=ui<0 impliesThat the element is releasing or supplying power.⚫Section2习题答案一.Choose the best answer into the blank1.B2.A3.B4.C5.B二.Answer the following questions according to the text1.The difference between an independent source and a dependent source is: the source2.Quantity of a dependent source is controlled by another voltage or current,but the source Quantity of an independent source maintains a specified value.3.An ideal independent source is an active element that provides a specified voltage or4.Current that is completely independent of other circuit variables.3.No.The current through an independent voltage source can be calculated by the4.External circuit.4.A voltage-controlled voltage source(VCVS),A current-controlled voltage source (CCVS),A voltage-controlled current source (VCCS), A current-controlled current source (CCCS)5.No,it isn’t.三.Translate the following into Chinese（译文）在随后内容中提及的所有简单电路元件，根据通过它的电流和其两端电压之间的关系进行分类。
电气专业英语期末试卷参考答案
电气专业英语期末试卷参考答案2018-2019学年第2学期《电气工程专业英语》标准答案一、根据英文单词，写出中文意义（20X0.5=10,共10分）alternator n.交流发电机automation n.自动控制, 自动操作bandwidth n.带宽，频带宽度built-in adj.内置的, 固定的, 嵌入的capacitance n.容量，电容charge n.负荷, 电荷, 费用, 充电coil n.线圈converter n.转换器,变换器diode n.二极管impedance n.阻抗, 全电阻insulator n.绝缘体semiconductor n.半导体sensor n.传感器suppression n.抑制switch n.开关, 电闸, 转换threshold n.临界值，阈值，门槛vacuum n.真空, 空间vector n.向量, 矢量waveform n.波形ammeter n.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incompatiblen.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repulsionn.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on the other hand 另一方面take advantage of 利用negative charge 负电荷electric field 电场free electron 自由电子current flow 电流sine wave 正弦波Root-Mean-Square 均方根(值)series circuit 串联电路voltage drop 电压降parallel circuit 并联电路compound circuits 复合电路parallel branch 并联分枝decimal system 十进制系统programmable controller 可编程控制器truth table 真值表carbon brus 碳刷permanent magnet 永久磁铁armature field 电枢场magnetic lines 磁力线proportional system 比例系统sampling period 采样周期analog signal 模拟信号baud rate 波特率discrete input 开关量输入limit switch 限位开关proximity switch 接近开关industrial bus 工业总线voltage difference 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PLC Programmable Logic Controller 可编程序逻辑控制器PPI Point-to-Point Interface 点-点接口CNC Computerized Numerical Control 计算机数值控制EIA Electronic Industries Association 电子工业联合会RF radio frequency 射频, 无线电频率FCC Federal Communications Commission (美国)通信委员会互补金属氧化物半导体CMOS Complementary Metal-Oxide-SemiconductorTransistorMOSFET Metallic Oxide Semiconductor Field Effecttransistor金属氧化物半导体场效应晶体管VLSI Very Large Scale Integration 超大规模集成电路CEMF Counter ElectroMotive Force 反电动势五、把下列句子翻译为中文（5X2=10,共10分）1)欧姆定律涉及理想导体中的电压与电流的关系。
大学试卷-电气工程及其自动化大学英语1
河北大学继续教育学院试卷卷别 A 考核方式闭卷年级、专业课程大学英语1（本）姓名学号Part I Use of English （20 points）D irections: In thispart there are 20 incomplete dialogs. For each dialog there are four cho ices marked ABC and D. Choose the O NE answer that best completes the dialogue. 1. —Thank you very much for helping me.—_____________________2.A. That's right.B. Yes，it's right.C. Don't mention it.D. I'd like to.2.—Hello，may I speak to John?—_____________________A. Yes，you may.B. Please don't go away.C. Hold on，please.D. No，I'm John.3 . C a n I speak to Mr. Li?—_____________________A. No，you can't.B. Sorry，but he isn't in at the moment.C. No. I can't find him at the moment.D. Who are you?4. —Many thanks for coming to see me off.—_____________________A. Don't thank me.B. You are so kind.C. Never mind.D. It's a pleasure.5. —Thanks for your present. It's really nice.A－9-1—_____________________A. Yes，I think so.B. Never mind.C. I'd love to.D. I'm glad you like it.6. —Let's go for a flower show. What do you say? —_________A. No，I wouldn't.B. I didn't say anything.C. Yes，I would.D. All right. Let's go.7. —Do you want to have ice cream or just water? —_________A. Come on.B. As you like.C. Yes，both.D. Neither，thank you.8. —Which do you prefer，meat or fish?—_________A.As you like.B. All right.C. Either will do.D. Nothing.9. —Will you be able to come to the party?—_________A. I believe，yes.B. I am afraid not.C… I don't hope so.D. I don't expect.10. —-Would you lend me your pen?—_________A. Yes，give you.A－9-2B. OK， use it.C. Sure，here you are.D. It doesn't matter.Part Ⅱ Reading Comprehension （30 points）Directions: There are four passages in this part. Each passage is followed by five questions. For each question there are four choices marked A， B，C and D. Chose the best answer to each question.Passage OneEverybody knows that the favorite food in the United States is the hamburger. It seems impossible，but people eat 34，000，000，000 hamburgers a year. This is enough to make a line of hamburgers around the world four times.The favorite place to buy a hamburger is a fast-food restaurant. In these restaurants，people order their food，wait just a few minutes and carry it to their tables themselves. They can eat it in the restaurant or take the food out and eat it at home，at work，or in a park. At some restaurants people can drive up beside a window. They order the food，and a worker hands it to them through the window. Then they eat in their car.Hamburgers are not the only kind of food that fast-food restaurants serve. Some serve fish，chicken，beef，sandwiches，or Mexican food. They also serve fries （French fried potatoes），shakes （a drink made from milk and ice cream），soft drinks，and coffee. Fast-food restaurants are very popular because the service is fast and the food is inexpensive.For many people，this is more important than the quality of the food. These restaurants are also popular because the food is always the same. People know that if they eat at a company's restaurant in the north or south of the city，the food will be the same，if they eat in New York or San Francisco，it will still be the same.11. According to the passage，what food do Americans like best?A. Beef.B. Sandwiches.C. Hamburger.D. Fries.12. Where can Americans eat a hamburger?A. At home.B. In a park.A－9-3C. In their car.D. At any of the places mentioned above.13.Fast food is .A.deliciousB. unpopularC. inexpensiveD. of high quality14. The last paragraph tells us________.A. fast-food is very popularB. people like to eat in fast-food restaurantsC. why fast-food restaurants are very popularD. you can eat fast-food any where in the US15. What is the main idea of the passage?A. Fast-food restaurants are very popular.B. People in the US eat enough hamburgers to make a line around the world.C. Some people eat fast food in parks.D. People can eat fast food at work or in a park.Passage TwoGoing to court can be frightening，especially if you are a child. You may have to stand up in the witness box，and swear to tell the truth and answer questions in front of a crowd of adults. It would be even more frightening if you were the victim of a crime and you had to sit in the same courtroom as the person accused of attacking you，for instance. So the law in Britain has made it easier for children to act as witnesses. Children are allowed to tell what they know，from another room in the same courthouse，in this way they do not have to face all those people in the courtroom.It works on a closed-circuit （闭路的）television link，which means that the TV only operates inside the court. The child witness sits in a room with a social worker in front of a TV camera. Everyone in the court room can see the child on a TV screen，but the child can only see the judge and the lawyers who will ask him or her questions. The system has been so successful that it will be extended to more courts this year.Another way to make it easy for a child to act a witness is to set up a screen in the court room around the witness box so that the child cannot see the defendant （被告）. Information given by children can be very important to a court trial，butbefore1988 theA－9-4law did not really recognize that children told the truth. It stated that anything a child said in court had to be supported by other evidence in the case.16. A child witness，if he were the victim of the crime，would be frightened most by________. A. all the questions he had to answerB. the crowd of adults he had to faceC. the judge and the lawyersD. the person accused of attacking him17. The most important point of the new system that made things easier for a child witne ss is that____.A. he does not see the defendantB. he speaks in front of a TV cameraC. he is in another room in the same courthouseD. everyone in the courtroom can see the child18.What does the author think of the new system according to the third paragraph?A. Not very good.B. Very successful.C. Just an experiment.D. Hardly acceptable.19, Has the law always recognized the importance of children's information in court?A. No.B. Yes.C. Not until 1988.D. Before 1988，yes.20. The word “case” in the last paragraph means________.A. a particular situationB. a particular incidentC. a trialD. a boxPassage ThreeAlbeit Einstein had a great effect on science and history，greater than only a few other men have achieved. An American university president once commented that Einstein had created a new outlook，a new view of the universe. It may be some time before the average mind understands fully the identity of time and space and so on —butA－9-5even ordinary man understands now that the universe is something larger than ever thought before.By 1914 the young Einstein had gained world fame. He accepted the offer to become a professor at the Prussian Academy of Science in Berlin. He had few duties，little teaching and unlimited opportunities for study，but soon his peace and quiet were broken by the First World War.Einstein hated violence. The misery of war affected him deeply，and he sat unhappily in his office doing little. He lost interest in his research. Only when peace came in 1918 was he able to get back to work.In the years following World War I honors were increasingly given to him. He became the head of the Kaiser Whihem Institute on Theoretical Physics. In 1921 he won the Nobel Prize，and he was honored in Germany until the rise of Nazism when he was driven from Germany because he was a Jew.21. According to the American university president，________.A. everyone understands Einstein's theory todayB. Einstein achieved more than any other scientists in historyC. the theory of relativity can be quickly learned by everyoneD. our ideas about the universe are different today because of Einstein22. According to paragraph two，Albert Einstein________.A. was a famous chemistB. became a professional researcherC. was popularA.D. enjoyed reading about war23. What did Albert Einstein do in the First World War?A. He joined the army.B. He participated in anti-war activities.C. He was unhappy and did little.D. He went to America.24.After World War I，Albert Einstein________.A. was forced to leave the Kaiser Whihem Institute on Theoretical PhysicsB. was acknowledged by scientific community because of his devotionC. was forced to work for the NazisD. was appointed the head of the Kaiser Whihem Institute on Theoretical Physics by the Nazis25. It may be concluded that________.A. Albert Einstein had no other interests than scienceB. Einstein was forced to serve in the German armyA－9-6C. Germans usually have a high respect for scienceD. his reputation was ruined because of his work during World War IPart Ⅲ Vocabulary and Structure （20 points）Directions: In this section there are 30 incomplete sentences. For each sentence ther e are four choices marked A，B，C and D. Choose the O N E answer that best completes the sentence.26.—Hi，Mary，you look very tired.—Yeah， I________for a whole week.A. workedB. had workedC. have workedD. have been working27. He gave me________on how to study English well.A. some adviceB. advicesC. an adviceD. the advice28. Hans is________of the three boys.A. the cleverB. the clevererC. cleverestD. the cleverest29.Look________！There's a car coming.A. upB. outC. backD. over30. Mother promised she________me an English-Chinese dictionary as a gift for my birt hday.A. was buyingB. would buyC. boughtD. will buy31. The police are______the two missing children.A－9-7A. looking outB. looking afterC. looking forD. looking back on32. I don't know why she avoids____________ her opinion on the subject.A. to giveB. to be givenC. givingD. being given33.I do not intend______that，because we shall have an opportunity to do so on another occasion.A. followingB. followedC. being followedD. to follow34. The difference between an African elephant and an Asian one is that the former has_ _____ears.A. largerB. the largeC. more largerD. the largest35. He's determined to finish the job______long it takes.A. howeverB. no matterC. whateverD. whereverPartⅣTranslate the following sentences into English，using the words and phrases given in the brackets.（20 points）36..我们公司主要从事电脑软件和网络的开发。
《电气工程专业英语》期末试卷B
《电气工程专业英语》期末试卷B(本试卷共四大题，满分100分，考试时间120分钟)班级姓名学号I.Choose the best answer into the blanks.(20points)1 、In a circuit ,a node is a .A. wireB. two-terminal deviceC. junction involving the connection of two or more wiresD.loop2. Ohm' s Law allow us to calculate the through a resistor if the voltage across it is given.A. resistanceB. currentC. voltageD. inductance ( )3. Inductance is measured in ,abbreviatedA. henries, HB. capacitance, CC. volt, VD. resistance, R ( )4. All resistors are characterizedA. by a sinusoidal curveB. by a horizontal lineC. by a vertical lineD. by a line with positive slops going though the origin ( )5.I have done much of the work. Could you please finish in two days?A. the restB. the otherC. anotherD. the others ( )6.---I'm sorry, but there's no smoking on this flight.---Oh, I that. Sorry, I won't again.A. don't know.B. didn't know.C.won't knowD.haven't known. ( )book in our library.7. This isA. the most interestingB. most interestingC. the more interestingD. more interesting8. "Must I get up early tomorrow, Dad?""No ,you .Tomorrow is Sunday."A.can'tB. mustn'tC. needn'tD.couldn't ( )9 important information it is!A. What aB. What anC. HowD. What10.He didn't remember his watch.A. where he had putB. where he has putC. where had he putD. where has he put11 、It is rather difficult to make friends with her, but her friendship, is truer than any other's.A. while gainingB. after gainingC. when to gainD. once gained ( )12 、The pulse is composed of s tates.A.oneB.twoC.threeD.fore ( )13 、The simplest way for the operation of a digital circuit is made up ofA. the closing of a switchB. the opening of a switchC. both A and B ( )14 、If voltage pulses are used in digital operation, the absence of a pulse can be represented by .A. 1B.0C. 2D. 315 、"input A and input B equals output C" the statement can be expressed by the equationA. AB=CB. A+B=CC. A*B=C16 、The AND gate , OR gate, NOT gate are the three basicA. flip-flopsB. logic gatesC. equation ( )17 、A kind of material which does not allow electricity to pass though it, it is .A.insulatorB.conductorC.semiconductor18 、An electronic device often used for amplifying voltage and current, it isA.diodeB.deviceC.transistor ( )19 、A device which can stop and start the flow of electric current, it isA.diodeB. switchC.element ( )20、Substance which allows the passing of an electric current more easily than an insulator but not so well as a conductor, it i sA.insulatorB.conductorC.semiconductorⅡ.Words and expressions(20points)1、评估，判断2、稳压器3、普遍化，概括4、反馈5、下标，脚注6、剩余，余数，剩余的7、灌入，注满，插进8、性质不同的，特殊的9、简图、原理图10、惊人的，无比·11、passive component12、margin13 、estimate14 、guarantee15 、saturate16 、diffusion17 、cascade18 、approximation19 、contribution20 、distributeⅢ.Translate the following sentences into Chinese.(30points)1 、We may be able to fit the curve mathematically in two or more separate ranges of thevariables.2、The voltage levels used to represent the logic levels are not single voltage levels,but include arange of different voltages for logic0and another range of voltages for logic1.3、The operational amplifier is the most important basic block of all linear circuits.IV.Translate the following sentences into English.(30points)1、不指定另一点的位置，而讲某一点的电压是没有意义的.2、当电路的输出为高电平，并要求他把电流输给一个或多个电路时，该逻辑电路的输出就起一个电流源的作用。
电气专业英语考试及答案
2009-2010学年第一学期电工英语第二次测试题班级：________ 姓名：________ 学号：________ 一、汉译英（每词1份）保险丝（n）原型（n）万用表（n）模拟的（adj）兽，机器（n）安培表（n）机器（n）电工(n)数字的（adj）屏幕，银幕（n）欧姆表（n）电阻器（n）法则，原则（n）非线性的（adj）电压表（n）瓦特表（n）电流(n)电压(n)电感（n）电容（n）发电机（n）电线（n）电阻（n）导体（n）电工学（n）电的（adj）物理学（n）电磁学（n）表头读数（n）兆欧表（n）电子（n）安培（n）二、英译汉（每词2.5分）Secongary instrument electrical measurement Wind power plant space technology Needle-pointed spade-headSurface mount device electric current Electromotive force electric motorMega ohmmeter circuit testerOhm’law parallel circuitFlow velocity loop circuitSignal generator voltage dropV oltohm multi ammeter LCD display screen Measureing rang absolute instrument Current magnituide measurement accuracy Magnetic field series circuitPower switch meter rating答案：一、汉译英Fuse prototypeBeast ammeterMachine electricianDigital screenOhmmeter resistorPrinciple non-linearV oltmeter wattmeterCurrent voltInductance capacitanceGenerator wireResistance conductorElectrotechnics electricalPhysic electromagnetismReading meggerElectron ampere 二、英译汉间接测量仪电工测量风力发电厂空间技术针尖头铲形头贴片元件电流电动势电动机兆欧表电路测试器欧姆定律并联电路流速回路信号发生器电压降电压欧姆多功能安培表LCD液晶显示屏测量范围直接测量仪电流幅度测量精密度磁场串联电路电源开关仪表额定值。
《电气工程及其自动化》专业英语夹带
【词汇】电阻resistance；电流current；电压voltage；电容capacitance；电感inductance；电感特性exhibit inductance;频率frequency;波形waveform;绝缘体insulator；导体conductor；阻值resist；能力，性能capability；耗散dissipate；容纳accommodate；电容器capacitor；电容capacitance；电感器inductor；共振，谐振resonate；发射器emitter；整流器rectifier；波长wavelength；原子atom；质子proton；电荷，负荷charge；吸引attraction；排斥repulsion；交流发电机alternator；发电机generator；势的，位的potential终端terminal；极性polarity；正弦sine；正弦波sinewave；；周期cycle；三相threephase；偏移量offset；；电枢armature；磁场magnetic field；顶点peak；峰值peakvalue；电路ciruit；负荷，负载load；开关，电闸，转换switch；示意性的schematic；计算，考虑calculate；分子numerator；转化的invert；支流branch；混合物compound；相等的equivalent；方法method；刷新redraw；二极管diode；晶体管transistor；半导体semiconductor；制作fabricate;晶体crystal；结合物bond；四面体tetrahedron；本质的intrinsic；杂物，混杂物impurity；中等的moderate；极性polarity；交感interaction；损耗depletion；相反reverse；真空vacuum；泄漏leakage；数字的numerical；十进制decimal；阿拉伯数字digit；权重weight；幂power；二进制binary；位bit；乘multiply；余数remainder；综合integration；双极的bipolar；变极器inverter；便携式电脑laptop；描述depict；瞬间的momentary；逻辑门gate；图表的diagrammatic；方向，方位orientation；芯片chip；多路器multiplexer；定理theorem；搅拌机mixer；向量vector；摩擦力friction；扭矩torque；乘积product；半径，范围radius；杠杆lever；旋转revolution；惯性inertia；补偿compensate；功work;【短语】工业总线industrial bus;电压差voltage difference; 电压降voltage drop;串联电路series circuit; 并联电路parallel circuit; ;换向开关inverter switch；开关输入量discrete input; 正电荷positive charge；负电荷negative charge; 正向positive direction；负向negative direction；反向opposite direction；三相three-phase；磁场magnetic field;交流变量alternating current component;超时over time; 电场electric field; 峰值peak value；三角函数trigonometric function；均方根root-mean-square;等值电路equal value resistors;复合电路compound circuits; 数字转换conversion of number; 可编程控制器programmable controller；电能electrical energy；机械能mechanical energy；惯性定律law of inertia;电枢磁场armature field;右手法则right-hand rule;采样间隔sampling interval;模拟信号analog signal;数字信号digital signal;模拟量输入analog input；接近开关proximity switch;有功功率active power;放大区amplifier region;异步电动机asynchronous machine;开关量输出discrete output;三相交流电three-phase;有源滤波器active filter；在—之间between and；另一方面on the other hand；利用take advantage of；包围close in；由---组成be formed by；考虑take into account；支路by-pass；中性状态neutral state；挤出去force out；自由电子free electron；电流current flow；图示graphic representation；正弦波sine wave；；；与—有关be referable to；；最小公倍数lowest common multiple；复合电路compound circuits；并联分支parallel branch;物理类型physics types；碳族carbon family；三维的3-dimensional；外层电子outer electron；元素周期表periodic table；PN结PNjunction；N区Nregion；数字系统number system；数字值numerical value；十进制系统decimal system；二进制系统binary system；指轮开关thumb wheel switch；；超大规模集成电路very large scale integration；；真值表truth table；牵引电阻pull-up resistor；；米每秒meters per second；角速度angular speed；外力external force；转动惯量moment of inertia；蒸汽机steam engine；绕—而走walk around；欧姆定律Ohm’s law;色条代码color chart codes；国家军用规格和标准National Military specification and standard;检查和维修inspection maintenance;保修条款;limited warranty policy;原子中性状态neutral state of an atom;电中性electrically neutral;交流正弦波ACsine wave;三相交流电three-phase AC power;瞬时电压instantaneons voltage;有效值effective value;简单电路simple electric circuit;数字电路digital circuit elememts;人工布线manual routing;自动布线auto routing;静力net force；线速度linear speed;角速度angular speed;加速度acceleration;【缩写】DC(Direct Current)直流电；BCD(Binary-Coded Decimal)二进制编码的十进制；CMOS(comliementary metal oxide semiconduct)互补金属氧化物半导体；AC(Alternating Current)交流电；RPM(revolutions per minute)转/分；RF(Radio Frequency)射频，无线电频率；BCD(Binary Coded Decimal)二进制编码的十进制；CEMF（CounterElectroMotiveForce）反电动势；PID（proportional integral differential）比例积分微分；PLC （programmable logic controller）可编程逻辑控制器；ADC（analog to digital converter）·模拟/数字转换器；【翻译】1.Resistors are used to control voltagesand currents:电阻器被用于控制电压与电流2.Resistors are components that have a predetermined resistance.Resistance determines how much current will flow through a component.电阻器是预先设定好的元件。
电气工程专业英语section 1-1
Section1 Current and Voltage
flow as the movement of positive charges, that is, opposite to the flow of negative charges, as Fig.l-1 illustrates. This convention was introduced by Benjamin Franklin (l706～l790), the American scientist and inventor. Although we now know that current in metallic conductors is due to negatively charged electrons, we will follow the universally accepted convention that current is the net flow of positive charges. Thus, Electric current is the time rate of charge, measured in amperes (A). Mathematically, the relationship among current i, charge q, and time t is
p ui
(1-6)
Because u and i are generally function of time, the power p in Eq. (1-6) is a time-varying quantity and is called the instantaneous power. The power absorbed or supplied by an element is the product of the voltage across the element and the current through it. If the power has a plus sign, power is being delivered to or absorbed by the element. If,
电气工程专业英语考试
♦While we appear to prefer the total objectivity of a mathematically formulated method of signal processing, it is now well proven that the AI methods often are better choices to use in terms of better speed of performance and often lower cost of processing.♦当我们似乎更喜欢信号处理数学方法的整体客观性，现在证明，为了得到更好的速度性能和低成本的处理，人工智能方法经常是更好的选择。
♦Often they are the only solution since the algorithmic approach cannot be deployed because of the lack of a suitable mathematical formulation or powerful enough processor to run the algorithm.♦经常当算法因为缺乏适合的数学表达式和足够强大处理器去运行算法而不能展开时，他们是唯一的解决方案。
♦Signal processing in the modern instrument, therefore, will often make use of many different methods. This account is an introduction to the characteristics of the various forms and is written to assist selection. Space limitations prevent presentation of each kind in detail.因此，在现代仪器中的信号处理通常会使用许多不同的方法。
电力职称英语试题及答案
电力职称英语试题及答案一、选择题（每题2分，共20分）1. The primary function of a transformer is to:A. Convert voltage levelsB. Amplify electrical signalsC. Rectify alternating currentD. Filter electrical noise答案：A2. In an electric power system, the term "load" refers to:A. The source of electrical powerB. The electrical equipment that consumes powerC. The transmission lines that carry powerD. The protective devices for circuits答案：B3. Which of the following is not a type of electrical fault?A. Short circuitB. OverloadC. Ground faultD. Surge protection答案：D4. The unit of electrical power is the:A. VoltB. AmpereC. WattD. Ohm答案：C5. The purpose of a circuit breaker is to:A. Provide a path for excess currentB. Maintain a constant voltage levelC. Protect the circuit from overcurrentD. Convert AC to DC答案：C二、填空题（每题1分，共10分）6. The three main components of an electric power system are the _______, transmission, and distribution.答案：generation7. The SI unit for electrical resistance is the _______.答案：ohm8. In a parallel circuit, the total resistance is always_______ than any individual resistance.答案：lower9. The process of converting mechanical energy intoelectrical energy is known as _______.答案：generation10. A fuse is a type of protective device that operates by_______ when the current exceeds a safe level.答案：melting三、简答题（每题5分，共30分）11. Explain the difference between AC and DC power systems. 答案：AC (Alternating Current) power systems use a current that regularly reverses direction, while DC (Direct Current) power systems use a current that flows in one direction only.12. What is the significance of Ohm's Law in electrical engineering?答案：Ohm's Law is fundamental in electrical engineering asit relates the voltage (V), current (I), and resistance (R) in a simple electrical circuit, expressed as V = IR, allowing for calculations of these quantities.13. Describe the role of a generator in an electric power system.答案：A generator is a device that converts mechanical energy into electrical energy, serving as the primary source of power in an electric power system.14. What are the functions of a capacitor in an electrical circuit?答案：A capacitor in an electrical circuit can store energy, filter signals, and block direct current while allowing alternating current to pass.四、计算题（每题5分，共20分）15. Calculate the total resistance in a circuit with two resistors in parallel, where R1 = 100 ohms and R2 = 200 ohms.答案：\( R_{total} = \frac{R1 \times R2}{R1 + R2} = \frac{100 \times 200}{300} = \frac{20000}{300} = 66.67 \) ohms16. If a 12-volt battery is connected to a 3-ohm resistor, what is the current flowing through the resistor?答案：\( I = \frac{V}{R} = \frac{12}{3} = 4 \) amperes17. What is the power consumed by a 5-ohm resistor with a current of 2 amperes flowing through it?答案：\( P = I^2 \times R = 2^2 \times 5 = 4 \times 5 = 20 \) watts18. If a 240-volt AC motor draws a current of 5 amperes, what is the apparent power?答案：\( S = V \times I = 240 \times 5 = 1200 \) volt-amperes五、论述题（每题10分，共20分）19. Discuss the importance of energy efficiency in power systems and how it can be achieved.答案：Energy efficiency is crucial in power systems as it reduces energy consumption, lowers operational costs, and decreases environmental impact. It can be achieved through various means such as using high-efficiency equipment, optimizing system operations, and implementing demand-side management strategies.20. Explain the concept of smart grids and their advantages over traditional power systems.答案：Smart grids are advanced power systems that use digital technology and automation to improve the efficiency, reliability, and sustainability of electricity production anddistribution. They offer numerous advantages over traditional systems, including better demand response, enhanced grid stability, and the ability to integrate renewable energy sources more effectively.。
专业英语_考查试题_
专业英语_考查试题_⼆. 根据电⽓⼯程专业基本知识，判断正误。
（共10分，每空1分）1. In alternating current an AC generator is used tomake electrons flow continuously in one direction.2. In North American 50Hz is adopted as standardfrequency in electric power system. _____3. A computer’s microprocessor only understands high-level language._____4. Instructions written in a high-level language mustbe translated into machine language in binary formbefore a computer can use them. _____第 1 页共 6 页5. In alternating current an AC generator is used to make electrons flow continuously in one direction. _____6. In China alternating current is usually generated at 60Hz. _____7. The north pole of the armature is attracted to the south pole of the main field. The south pole of the armature is attracted to the north pole of the main field. _____8. When three capacitors connected in series, . _____9. The commutator can change current direction in the conductor._____10. Most computers are equipped with a keyboard as the primary output device. _____三. 基本词汇的英汉互译。
电子电气专业英语
一、History about electronics(电子技术，电子学，电子设备)1、The English names for the department and the majors电气工程系Department of Electrical Engineering电气化铁道工程Electrified railway engineering电气自动化技术Electrical automation technology电子信息工程技术Technology of electrical and Information Engineering 应用电子技术The application of electronic technology电子工艺与管理Electronic technology and management供用电技术Technology power电机与电器Motor and electric appliances铁道通信信号Railway communication signal2、History about electronicsThere can be no doubt that the 1900s is remembered as the electronic century. Of course there have been other great advances, in medicine（医学领域）, in transport, in science, in commerce(商业领域), and many other fields but where would they have been without the instruments and devices that electronics has provided?How would you see a 3D virtual reality image（3D虚拟现实影像） of your beating heart with no electronics? Would you go to a pop concert（流行音乐会）that had no amplifiers（【电子】放大器，扩音器）, large screens or lighting effects? Don’t say you would rather watch TV-there would not be any.Electronics in the early 20th century started thriving at a greater speed unlike the pre-20th century developments. The radio（无线电） invented by the Italian genius Marconi and the work of Henry Hertz opened the road to further discoveries and inventions.In the first decade the new thing that was welcome to the technical world was the vacuum tube（真空管，电子管）. The vacuum tubes at that time worked as a miraculous component for the radio devices.The invention of the television was a miraculous thing for the mankind. It was revolution in both communication technology（通信技术） and also for the world media. The distances between the continents did not seem to be far enough.The credit goes to the British engineer John Logic Baird who followed the footprints of Marconi and tried to send the images in the same way as the speech. After a long experiment he found that a series of static pictures, if sent within a small interval of time in between them, seem to be moving.The real electronics what it is called today was actually started after the discovery of the transistor（晶体管） effect. Transistor opened the road for the computing world. Computers of various types started hitting the market and the research works got a boost.Some other problems were also there like the assembling（装配，聚集） of the electronic components（电子元器件） on a single mother board（母板，主插件板）. Jack Kilby in Texas Instruments found a very nice solution.He suggested to throw away all the wires（wire：电线，电报） and tried to connect the resistors（电阻器）, capacitors（电容器） and transistors on the samepiece of wafer（圆片，晶片） internally. Surprisingly his ideas worked and gave birth to the integrated circuit（集成电路） industries.二、Introduction to some courses1、Direct current circuits & Alternating current circuits（直流电路与交流电路）This course covers the fundamental theory of passive devices （无源器件）(resistor, capacitor, and inductor（电感器）) and electrical networks（电子、电路网络） supplied by a DC source（直流电源）, then an introduction to the effects of alternating voltage and current in passive electrical circuits（electrical circuit：电路）is given. This module also covers DC machines, three phase circuits（三相电路）and transformers（变压器）.这门课程包括了无源器件（电阻，电容和电感）的基本理论和用直流电源供电的电路网络，接着介绍无源电路中的交流电流和交流电压的作用，这个课程模块还包括了直流电机，三相电路和变压器。
电气英语试题及答案
电气英语试题及答案一、选择题（每题2分，共20分）1. Which of the following is not a type of electrical conductor?A. Copper wireB. GlassC. AluminumD. Graphite答案：B2. The unit of electric current is:A. VoltB. AmpereC. OhmD. Watt答案：B3. What is the term used to describe the flow of electric charge?A. VoltageB. CurrentC. ResistanceD. Power答案：B4. In an electrical circuit, what is the term for the total amount of electrical energy used?A. VoltageB. CurrentC. PowerD. Energy答案：D5. What is the basic unit of electrical resistance?A. OhmB. VoltC. AmpereD. Coulomb答案：A6. Which of the following is not a type of electrical energy source?A. Solar panelsB. Wind turbinesC. BatteriesD. Water heaters答案：D7. What is the term for the rate at which electric power is transferred by an electrical circuit?A. VoltageB. CurrentC. PowerD. Resistance答案：C8. The process of converting electrical energy into another form of energy is called:A. ConductionB. ConversionC. GenerationD. Transmission答案：B9. What is the term used to describe the potential difference between two points in an electrical circuit?A. CurrentB. VoltageC. PowerD. Resistance答案：B10. Which of the following is not a type of electricalcircuit component?A. ResistorB. CapacitorC. InductorD. Transformer答案：D二、填空题（每题2分，共20分）1. The electrical device that converts electrical energy into mechanical energy is called a ________.答案：motor2. The unit of electrical energy is the ________.答案：kilowatt-hour3. The electrical device that stores electrical energy is called a ________.答案：capacitor4. The electrical device that changes the voltage level in an electrical circuit is called a ________.答案：transformer5. The electrical device that protects the circuit from excessive current is called a ________.答案：fuse6. The process of converting mechanical energy intoelectrical energy is called ________.答案：generation7. The electrical device that allows current to flow in only one direction is called a ________.答案：diode8. The electrical device that changes alternating current (AC) to direct current (DC) is called a ________.答案：rectifier9. The electrical device that resists the flow of electric current is called a ________.答案：resistor10. The electrical device that stores electrical energy in a magnetic field is called an ________.答案：inductor三、简答题（每题10分，共30分）1. Explain the difference between voltage and current in an electrical circuit.答案：Voltage is the potential difference between two points in an electrical circuit, measured in volts (V). It is the force that pushes electric charge through a conductor. Current, on the other hand, is the flow of electric charge, measured in amperes (A). It is the rate at which electric charge passes a given point in the circuit.2. What is the function of a circuit breaker in an electrical system?答案：A circuit breaker is a safety device designed toprotect an electrical circuit from damage caused by excess current. It automatically cuts off the flow of electricity when the current exceeds a safe level, preventing potential hazards such as electrical fires or damage to appliances.3. Describe the role of a generator in an electrical power system.答案：A generator is a device that converts mechanical energy into electrical energy. In an electrical power system,generators are used to produce electricity by converting the kinetic energy from rotating turbines into electrical energy. This electricity is then transmitted and distributed to consumers through a network of power lines.。
重庆大学电气工程学院专业英语试题(A卷)(2002级)
重庆大学电气工程学院《专业英语》试题（A卷）(2002级)成绩评定办法、参考答案及评分标准一.成绩评定办法课程最终成绩＝笔试成绩×80％＋平时成绩（满分为20分）二. 参考答案及评分标准Ⅰ.Reading comprehension（20points）:（每小题2分）Passage one:①C ②BPassage two①B ② A③(1) minute ( 微小的)(2) halved ( 对分或二等分)(3) advance ( 递增、推进)(4) rounded down or up( 上下调整、四舍五入)(5) trigger ( 触发)ⅡPlease translate following four passages into Chinese（40points）:Passage one (10points)5.3 节中说明了三相感应电动机结构上的突出特点。
由于感应电机是单边励磁，因此磁化电流和有功分量电流必然流经同一回路。
此外，由于感应电机磁路中存在气隙的，需要有一定的磁化电流建立外加电压所需的每极磁通。
一般，三相感应电动机的磁化电流为额定电流的25-40%。
因此，电机轻载时，功率因数很低，接近额定出力时，其功率因数小于1。
Passage two (15points)感应电机在电压控制型软启动期间的性能优化摘要――通过克服供电频率转矩的波动和保持电网电流恒定于预设值，本论文研究了中/高功率感应电机软启动期间的性能优化问题。
在供电压第一周期的正确时刻触发背靠背连接的晶闸管电路可以克服启动转矩的脉动。
利用由触发角的连续余弦和常量函数构成的简单策略，就可确保启动时电网电流恒定于预设值。
这些策略可以通过8位的微控制器来实现。
借助于一个依据实际定子变量考虑了三相、二相和断续工作模式的综合ABC/dq电机模型，进行了系统的瞬态性能分析。
从常规实验台上获得的实验结果与理论分析相一致。
索引词――感应电机，软启动器，转矩脉动Passage three (5points)输电线路的模型用四个影响其运行特性的参数来描述。
电气工程专业英语试卷及参考答案
《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n.隔绝, 绝缘adj.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…and在……之间on the other hand 另一方面take advantage of 利用negative charge 负电荷electric field 电场free electron 自由电子current flow 电流sine wave 正弦波Root-Mean-Square 均方根（值）series circuit 串联电路voltage drop 电压降parallel circuit 并联电路compound circuit s复合电路parallel branch 并联分支decimal system 十进制系统programmable controller 可编程控制器truth table 真值表carbon brus 碳刷permanent magnet 永久磁铁armature field 电枢场magnetic lines 磁力线proportional system 比例系统 sampling period 采样周期 analog signal 模拟信号 baud rate 波特 discrete input 开关量输入 limit switch 限位开关 proximity switch 接近开关 industrial bus 工业总线 voltage difference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）PLC PPI CNC EIA RF FCCCMOS VLSI CEMF五、根据下列方框中所给的词填空（5X1=5,共5分）Resistance in a material arises from the collision of electrons with the atoms and with each other as they move. The ___ 1、 collisions ___ produce heat, increasing the temperature of the material. Consider the ordinary toaster. Current flows through the ___2、wires ___ of the power cord and through the toaster's filament (the glowing wire you see inside). The same current must flow in the power cord as flows through the filament. The cord has very little ___ 3、resistance ___, while the filament has considerably more. Since the filament has a much higher resistance than the cord, it ___ 4、produces ___ much more heat. That's as it should be. You want the heat for your toast, but you do not want the power cord getting ___ 5、hot ___! The standard incandescent light bulb is another example. The filament inthe light bulb glows white hot (hence, the word "incandescent") to produce light and a lot of heat as well. But, the low-resistance power cord stays cool.六、根据下列短文回答问题,回答请使用英文。
电气英语试卷及答案
《 电气工程专业英语 》试卷及答案一、根据英文单词，写出中文意义（20X0.5=10,共10分）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 Approximation n.能力，性能，容量 Capability v.补偿,偿还 Compensate n.损耗 Depletion adj.微分的 Differential n.打扰,干扰 Disturbance n.以太网 Ethernet n.频率, 周率 Frequency adj.不相容的, 矛盾的n.隔绝, 绝缘三、根据英文词组，写出中文意义（30X0.5=15,共15分）between…and 在……之间 on the other hand 另一方面 take advantage of 利用 四、negative charge 五、 负电荷 electric field 电场 free electron 自由电子 current flow 电流 sine wave 正弦波 Root-Mean-Square 均方根（值） series circuit 串联电路 voltage drop 电压降 parallel circuit 并联电路 compound circuit s 复合电路 parallel branch 并联分支 decimal system十进制系统programmable controller 可编程控制器 truth table 真值表 carbon brus 碳刷 permanent magnet 永久磁铁 armature field 电枢场 magnetic lines 磁力线 proportional system 比例系统 sampling period 采样周期 analog signal 模拟信号 baud rate 波特 discrete input 开关量输入 limit switch 限位开关 proximity switch 接近开关 industrial bus 工业总线 voltage difference电压差六、根据英文缩写，写出英文完整形式及中文意思（10X2=20,共20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电流表adj.瞬间的, 刹那间的 Momentary n.极性Polarity n.转发器,中继器 Repeater n.排斥Repusion n.阻力，电阻，阻抗 Resistance vt.模拟,模仿 Simulate n.晶体管Transistorn.传感器，发送器，传递器 Transmittern.阀 n.波长五、根据下列方框中所给的词填空（5X1=5,共5分）Resistance in a material arises from the collision of electrons with the atoms and with each other as they move. The ___ 1、collisions ___ produce heat, increasing the temperature of the material. Consider the ordinary toaster. Current flows through the ___2、wires ___ of the power cord and through the toaster's filament (the glowing wire you see inside). The same current must flow in the power cord as flows through the filament. The cord has very little ___ 3、resistance ___, while the filament has considerably more. Since the filament has a much higher resistance than the cord, it ___ 4、produces ___ much more heat. That's as it should be. You want the heat for your toast, but you do not want the power cord getting ___ 5、hot ___! The standard incandescent light bulb is another example. The filament in the light bulb glows white hot (hence, the word "incandescent") to produce light and a lot of heat as well. But, the low-resistance power cord stays cool.六、根据下列短文回答问题,回答请使用英文。
电气工程及其自动化-自动化-专业英语重点-考试题
四川理工的学弟学妹们，特别是自电学院的兄弟伙们，专业英语难过啊，是否需要这个呢？我的淘宝店铺：信诚悦购包你80分电气自动化、自动化专业英语课堂笔记一．短语互译（10个，每个2分，共20分）1、DC/AC：direct/alternating current.(直流/交流)2、a good rule of thumb.（根据经验）3、step-up/step-down transformer(升压/降压变压器）autotransformer(自耦变压器)4、gate-turn-off thyristor [θai'ristə](门极可关断晶闸管）5、silicon-controlled rectifier(可控硅整流器）6、forward voltage drop(正向压降)7、reverse breakdown voltage(反向击穿电压）8、reverse leakage current（反向漏电流）9、peak reverse voltage（反向峰值电压）10、forced commutation(强制换流）11、three-phase ac squirrel cage induction motor（三相交流鼠笼式感应电机）12、AM/FM :amplitude/frequency modulation(调幅/调频)13、active/passive filter（有源/无源滤波器）14、bistable circuit(双稳电路)15、flip-flop（触发器）16、emf：electromotive [i,lektrəu'məutiv] force(电动势)17、magnetic flux（磁通）18、magnetizing current（磁化电流/励磁电流）19、general-purpose relay（通用继电器）20、solid-state relay(固态继电器)21、time constant（时间常数）22、ADC：analog-to-digital conversion （模数转换器）二、汉译英（5-6个，共30分，2个课外）1、通过互联网进行商业交易，其便利性和速度是推动电子商品快速发展的主要因素。
电气工程及其自动化专业大学英语答案
1. C2. B3. C4. A5. D6. A7. D 8. C 9. A 10. C 11. A 12. C 13. D 14. A 15. B 16. D 17. D 18. B 19. D 20. C 21. A 22. B 23. B 24. D 25. B 26. B 27. B 28. C 29. B 30. C 31. A 32. D 33. B 34. C 35. D 36. D 37. B 38. B 39. B 40. C41. 任何有价值的梦想就是一个值得实现的梦想。
42. 他和她握手就好像他们一生都互相了解。
43. 因此，需要采取更有效的措施和更有力的行动去对抗所有种类的犯罪，那样我们生活的世界可能变得更适宜居住。
44. After talking with the teacher for long time, we find the way to solve that question.45. She promised to steal the book that Tom bought yesterday.Cause and effectNow in the modern society many people smoke .Especially some young people who imitate their parents. Sometimes they don’t care about where they are. What’s more, someone who likes smoking can use more than ten cigarettes.Not only does smoking make great harm to people’s health, but also effect their attitude towards life to some extent .Some of them addicted to smoking, which make them spare little timeinto other activities .As we know, smoking also can make people get cancer and even die .In all, smoking is harmful in many aspects. W e should not smoke at all.。
电气英语面试题目及答案
电气英语面试题目及答案1. What is the difference between AC and DC?AC stands for Alternating Current, which is an electric current that periodically reverses direction. DC stands for Direct Current, which is an electric current that flows in a constant direction.2. Explain the concept of Ohm's Law.Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. Mathematically, it is represented as I = V/R.3. What is a transformer and what is its function?A transformer is a static electrical device that transfers electrical energy from one circuit to another through electromagnetic induction. Its primary function is to change the voltage levels of alternating current.4. Define the term "Kilovolt-Ampere" (kVA).kVA stands for kilovolt-ampere, which is a unit ofapparent power in an electrical circuit. It represents the product of the root mean square (RMS) voltage and the RMS current.5. Describe the function of a circuit breaker.A circuit breaker is an electrical safety device designedto protect an electrical circuit from damage caused by excess current from an overload or short circuit. It automatically interrupts the flow of current when it detects such a condition.6. What is the purpose of a fuse in an electrical system?A fuse is a safety device that protects electricalcircuits from damage due to overcurrent. It is designed to melt and break the circuit when the current exceeds a certain level, thereby preventing potential damage to the circuit.7. Explain the term "Power Factor".Power factor is a dimensionless number, between -1 and 1, that represents the ratio of real power to apparent power in an AC electrical power system. It is a measure of how effectively the current is doing work in the circuit.8. What is the difference between a series and parallel circuit?In a series circuit, all components are connected end-to-end so that the current flows through each component in turn. In a parallel circuit, components are connected across the same two points and the current is divided among the components.9. Define "Inductive Reactance".Inductive reactance (XL) is the opposition to the flow of alternating current (AC) in an inductive circuit. It is caused by the self-induced electromotive force (EMF) in the inductor and is proportional to the frequency of the AC and the inductance of the coil.10. What is the role of a diode in an electrical circuit?A diode is a two-terminal electronic component that allows current to flow primarily in one direction. It is used for rectification, voltage regulation, signal demodulation, and many other functions in electronic circuits.。
电工英文考题及答案
U s R1 I sR3 R3 R
I S 2.2U S
2/4
5. (15') In a three-phase three-wire Y-connected system, the three phase load is shown as the figure. The sequence of the symmetric three-phase source is
therefore
U AN' U AN U NN 258 .911.3 V U BN' U BN U NN 159 .16 118 .58 V UCN ' UCN U NN 253 .03107 .51 V
6. (15') Before the switch K is closed, the capacitor is uncharged. K is closed at the instant t=0. Use three factor method to determine iR (t) and uC (t), and draw the waveforms of them.
（2） M1 can be stopped only after M2 is stopped。 （3） There must have short-circuit protection and overload protection. Solution:
Main circuits: omitted. The control circuit:
电工技术英文考题（1）
1. (10' ) Determine the current I and the voltage UAB of the circuit in Figure 1. Solution: