机电英语课件 Chapter 4-1 Electrical Equipment

ElectricalEquipmentCHAPTER4时间：202X.XLearningObjectives01030204recognizethetermsrelatedtoelectricaltools,equipmentandequipmentmaintenancetalkabouthowtouseamultimetercorrectlyelicittheinformationaboutequipmentmaintenanceandsafetyparticipateintheWorldVocationalSchoolSkillsCompetitionLookandMatchWarmingUpA.screwdriverB.multimeterC.wirestripperD.solderE.oscilloscopeF.regulatedpowersupplyG.clampammeterH.T-handlehexsocketI.signalgeneratorwirestripperscrewdriversolderoscilloscoperegulatedpowersupplymultimeterclampammetersignalgeneratorT-handlehexsocketLookandSayWhatelectricaltoolscanyoufindintheworkshop?WarmingUpwirestripperscrewdriversolderoscilloscopemultimeterregulatedpowersupplyclampammeterT-handlehexsocketsignalgeneratorThinkandSayWarmingUpWhichelectriciantoolisdescribedineachsentence?Itisdesignedtodrivescrewsintooroutofmaterialsquicklyandwithlesseffort._________________Itisusedtocreateapermanentbondbetweentwoormoremetalcomponentsbymelting._____________Itcanmeasureseveralelectricalpropertiessuchasvoltage,current,andresistance.________________Itisanelectronicmeasuringinstrumentthatgraphicallydisplaysvaryingelectricalsignalsovertime._________________Itisusedtoremovetheinsulationfromelectricalwires.__________________Itisanelectricaldevicethatprovidesastableandconsistentoutputvoltageorcurrenttopowerelectronicdevicesandcircuits.________________________________screwdriversoldermultimeteroscilloscopewirestripperregulatedpowersupplyListenandTickListeningWhatcanbemeasuredbyamultimeter?()current()resistor()voltage()resistance()ammeter√√√ListenandDecideListeningAmultimetercanbeusedtomeasurevoltage,currentandresistance.()Wecanusethemultimeterdirectlytomeasurecurrent.()Thereareblackandwhiteprobesonthemultimeter.()thereisnosafetytipsforusingthemultimeter.()TFFFA:What’sthis?B:Thisisa(1)_______________.A:Iknownothingaboutit.Canyoutellme?B:Sure.Beforemeasuring,weshouldsetcorrect(2)____________andrange.A:Okay,butwhatdowemeasurewithit?B:Weuseittomeasurevoltage,currentand(3)_____________.A:Wow,tellmemoreplease.Howtomeasure(4)_____________?B:Firstly,putblackprobein"COM"portandredin“VΩ”port.Then,settherightvoltagerange.Andlastly,placeprobesonpointsto(5)____________.A:Isee.Arethereanysafetytips?B:Ofcourse.Weshouldcutoffthecircuitwhenmeasuringcurrent.ListenandCompleteListeningmultimeterfunctionresistancevoltagemeasureA:What’sthis?B:Thisisamultimeter.A:Iknownothingaboutit.Canyoutellme?B:Sure.Beforemeasuring,weshouldsetcorrectfunctionandrange.A:Okay,butwhatdowemeasurewithit?B:Weuseittomeasurevoltage,currentandresistance.A:Wow,tellmemoreplease.Howtomeasurevoltage?B:Firstly,putblackprobein"COM"portandredin“VΩ”port.Then,settherightvoltagerange.Andlastly,placeprobesonpointstomeasure.A:Isee.Arethereanysafetytips?B:Ofcourse.Weshouldcutoffthecircuitwhenmeasuringcurrent.ListenandimitateListeningPracticetheabovedialoguewithyourpartner.Howtouseamultimetertomeasurecurrentandresistance?Discusswithyourpartnerandrole-playthedialogue.Reference:A:What’sthis?B:Thisisamultimeter.A:Iknownothingaboutit.Canyoutellme?B:Sure.Beforemeasuring,weshouldsetcorrectfunctionandrange.A:Okay,but,whatdowemeasurewithit?BWeuseittomeasurevoltage,currentandresistance.A:Wow,tellmoreplease.Howtomeasure…?B:…Role-playSpeakingWords&ExpressionsWarmingupscrewdriver:/ˈskruːdraɪvə(r)/n.螺丝刀；螺丝起子multimeter:/ˌmʌltiˈmiːtə(r)/ n.万用表；多用表wire:/ˈwaɪə(r)/n.电线；金属丝；v.给…装电线；用金属丝缚住stripper:/ˈstrɪpə(r)/n.剥皮机；这里指剥线钳solder:/ˈsɒldə(r)/；美/ˈsɑːdər/n.焊料；焊锡；v.焊接；焊合oscilloscope:/əˈsɪləskəʊp/ n.示波器regulatedpowersupply:/ˈreɡjuleɪtɪdˈpaʊə(r)səˈplaɪ/n.稳压电源clampammeter:/ˈklæmpˈæmɪtə(r)/n.钳形电流表T-handlehexsocket:/ˈtiːhændlheksˈsɑːkɪt/ n.T型六角套筒signalgenerator:/ˈsɪɡnəlˈdʒenəreɪtə(r)/n.信号发生器Words&Expressionsrange:/reɪndʒ