电工电子专业英语 教学课件 作者 徐红梅 Unit5,6.pptx

《电工电子专业英语 教学课件 作者 徐红梅 Unit5,6.pptx》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、ExercisesⅠ.Answerthefollowingquestions.1.Whatdoesacircuitconsistof?2.Whatisapowersupply?3.Whatisanelectricalappliance?4.Whatarewires?5.Whatisthefunctionofaswitch?Ⅱ.Arethefollowingstatementscorrect?Ifthesentenceiscorrect,say“True”aloud,ifnot,say“False”.1.Acircuitconsistsofpowersupply

2、,electricalappliances,wiresandswitches.2.Wiresarenotconductors.3.Allwiresaremadeofcopper.4.Wiresarecommonlycalledelectricalload.5.Anelectricalloaduseselectricalenergytowork.Ⅲ.TranslatethefollowingsentencesintoChinese.1.Acircuitconsistsofpowersupplies,electricalappliances,wiresandswi

3、tches.2.Apowersupplyisadevicethatchangesotherformsofenergyintoelectricalenergy.3.Anelectricalapplianceisadevicethatchangeselectricalenergyintootherformsofenergy.4.Wiresareleadsthatconnectthepowersupplywithelectricalappliances.5.Aswitchcanturncircuitsonoroffbymakingthemcompleteorinco

4、mplete.ExercisesⅠ.Answerthefollowingquestions.1.Whatisaresistor?2.Whatisthesymbolofresistance?3.Whatareinsulators?4.Whatareresistorsusedto?5.Doyouknowanycommonresistancecomponents?Ⅱ.Arethefollowingstatementscorrect?Ifthesentenceiscorrect,say“True”aloud,ifnot,say“False”.1.Everymateri

5、alopposestheflowofelectriccurrenttosomedegree.2.Insulatorsofferveryhighresistancetocurrent.3.Poorconductorshavelessresistancethangoodconductors.4.Resistorsarenotusedtoserveascircuitloads.5.Resistorsmaybeclassifiedasfixedorvariableintheirtypes.Ⅲ.TranslatethefollowingsentencesintoChin

6、ese.1.Aresistorisakindofresistancecomponentthatresiststheflowofelectricalcurrent.2.ItisrepresentedbythesymbolRandmeasuredinOhms.3.Everymaterialopposestheflowofelectriccurrenttosomedegree.4.Resistorsmaybeclassifiedasfixedorvariableintheirtypes.5.Goodconductorshavelessresistancethanpo

7、orconductors.