机电英语课件 Chapter 3-2 Electrical Components

ElectricalComponentsCHAPTER3时间：202X.XLearningObjectives01030204recognizethetermsrelatedtoelectricalcomponentsandelectricalmaterialstalkaboutelectricalcomponentsandtheirfunctionselicittheinformationabouttheelectricalcircuitdescribewhatasimplecircuitconsistsofReadingReadingElectricCircuitAnelectriccircuitisapaththroughwhichelectriccurrentflows.Itconsistsofasourceofelectricalenergy,suchasabatteryoragenerator,conductorsthatcarrythecurrent,andvariouselectricalcomponentslikeresistors,capacitors,andinductors.Thesourceprovidestheelectricalpotentialdifferencethatdrivestheflowofelectrons.Conductors,usuallymadeofmaterialslikecopperoraluminum,offeralowresistancepathforthecurrent.Resistorslimitthecurrentflow,capacitorsstoreandreleaseelectricalcharge,andinductorsstoremagneticenergy.Electriccircuitscanbeclassifiedasseries,parallel,orcombinationcircuits.Understandingelectriccircuitsisessentialinfieldslikeelectronics,electricalengineering,andphysics.ReadandChoose

Whichofthefollowingisnotanelectricalcomponentmentionedinthetext?()A.ResistorsB.DiodesC.CapacitorsD.InductorsWhatmaterialareconductorsusuallymadeofaccordingtothetext?()A.GoldandsilverB.CopperoraluminumC.IronandsteelD.PlasticandrubberElectriccircuitsareimportantinthefollowingfieldsexceptforwhichone?()A.BiologyB.ElectronicsC.ElectricalBBReading1.2.3.AReadandDecideReadingAnelectriccircuitalwayshasonlyonesourceofelectricalenergy.()Conductorsinanelectriccircuitofferahighresistancepathforthecurrent.()Capacitorsstoreandreleaseelectricalcharge.()Electriccircuitscanonlybeclassifiedasseriescircuits.()Understandingelectriccircuitsisessentialonlyinelectricalengineering.()FFTFFCompetethebasiccircuitWritingThecurrentreachestheA._________________________,makingitwork.TheB.__________________providesenergy.WhentheC.___________isclosed,apathforcurrentisformed.WhentheD._____________isopened,thecircuitisbrokenandtheappliancestopsworking.electricalappliancepowersupplybuttonbuttonReadandRearrangeWritingAccordingtothebasiccircuit,putthefoursentencesintocorrectorder.____________________________________(3)(2)(1)(4)ReadandDescribeWritingPicture1representsa____________circuit.Picture2representsa____________circuit.“a”representsa_______________.“b”representsa___________________.parallelseriesbuttonpowersupplyReadandFill Electricity(1)____________ourmodernlives,andtwofundamentalcircuittypesareseriesandparallelcircuits. Inaseriescircuit,(2)__________________areconnectedendtoendalonga(3)___________path.Thesame(4)_____________flowsthrougheachcomponent.Totalresistanceisthesumofindividualresistance.(5)_____________acrosscomponentsisproportionaltotheirresistance.Christmastreelightsareanexample.Butifonecomponentfails,thewhole(6)___________maybreak. Componentsina(7)___________circuitareconnectedacrossmultiple(8)____________.Voltageacrosseachcomponentisthesame,andcurrentisdividedamongbranches.Totalresistanceiscalculateddifferently.Ifonebranchfails,otherscanstill(9)____________.Itcanbeeasilyfoundinhouseholdwiring. Understandingthesecircuitsiscrucialforelectrical(10)_________________.Theyensureefficientelectricityflowandproperdevicefunctioning.

Writing1.components2.current3.voltage4.circuit5.parallel6.engineering7.powers8.single9.paths10.functionpowerscomponentssinglecurrentvoltagecircuitparallelpathsfunctionengineeringTalkandPracticePracticingCompletethefollowingspeechbasedonyourunderstandingofthisunit.Then,makeapresentation.UnderstandingElectricalElementsandCircuits Goodmorning/afternoon,everyone!Today,I’dliketotalkaboutelectricalelementsandcircuits,whicharefundamentaltoourmodernlives. Electricalcomponents,suchas________________,playcrucialrolesincircuits.________controlcurrentflow,capacitors_________electricalcharge,andinductorsstore_________._________,usuallymadeofcopperoraluminum,carrythecurrent,whilematerialslikerubberandplasticareusedforinsulationtoprotectusfromelectrical_________. Anelectriccircuitisa________forelectriccurrent.Itincludesapowersource,conductors,andvariouscomponents.Thereare______________circuits.Inaseriescircuit,componentsareconnectedendtoend,withthesamecurrentflowingthrougheach.Ina__________,componentsareconnectedacrossmultiplepaths,andthevoltageacrosseachisthesame. Understandingtheseelementsandcircuitsisessentialnotonlyforelectricalengineeringbutalsoforelectronicsandphysics.Theyarethebasisforallelectricaldevicesweusedaily.Let’s____________!Thankyou!Words&ExpressionsReadingcopper:/ˈkɑːpər/n.铜；铜币；紫铜色；铜制品；adj.铜制的charge:/tʃɑːrdʒ/n.费用；电荷；掌管；控告；v.使充电；使承担；指责；索价；充电aluminum:/ˌæljəˈmɪniəm/n.铝battery:/ˈbætəri/n.电池，蓄电池；炮台，炮位；一组；一群generator:/ˈdʒenəreɪtər/n.发电机；发生器；生产者potential:/pəˈtenʃl/ adj.潜在的，可能的；n.潜力，可能性；电势electron:/ɪˈlektrɑːn/ n.电子series:/ˈsɪriːz/n.系列，连续；串联；级数；丛书parallel:/ˈpærəlel/ n.平行线；对比；adj.平行的；类似的，相同的；v.使…与…平行limit:/ˈlɪmɪ