电工电子专业英语 教学课件 作者 徐红梅 Unit9,10.pptx

《电工电子专业英语 教学课件 作者 徐红梅 Unit9,10.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.Whatisacapacitor?2.Whyarecapacitorswidelyused?3.Whatiscapacitance?4.Whatistheunitofthecapacitance?5.Howdoyouworkoutthetotalcapacitanceifwejointwocapacitorsinparallel?Ⅱ.Arethefollowingstatementscorrect?Ifthesente

2、nceiscorrect,say“True”aloud,ifnot,say“False”.1.Acapacitorisadevicethatresistschangeincurrent.2.Capacitorsarewidelyusedbecausetheyresistchangeinvoltage.3.ThevaluesofcapacitorsareexpressedinFarads.4.Ifwejoincapacitorsinseries,thetotalcapacitanceisthesumo

3、ftheindividualcapaci-tances.5.Thepropertytoproduceacurrentinacapacitorwhenthevoltageacrossitchangesiscalledcapacitance.Ⅲ.TranslatethefollowingsentencesintoChinese.1.Acapacitorisanelectricaldevicethatcanstoreelectricalenergy.2.Basicallyacapacitorconsist

4、softwoconductorsseparatedbyanonconductor.3.Capacitorsarewidelyusedbecausetheycanstoreelectricalenergyinacircuit,andtheycanpassalternatingcurrentsincircuitwhileblockingadirectcurrent.4.Thepropertytoproduceacurrentinacapacitorwhenthevoltageacrossitchange

5、siscalledcapacitance.5.Ifwejoincapacitorsinseries,thetotalcapacitanceislessthanthecapacitanceofthesmallestcapacitor.ExercisesⅠ.Answerthefollowingquestions.1.Whatisadiode?2.WhatistheP-Njunctionmadeof?3.Howmanyelectrodesdoesatransistorhave?4.HowmanyP-Nju

6、nctionsdoesatransistorhave?5.Howmanytypesoftransistorsarethere?Ⅱ.Arethefollowingstatementscorrect?Ifthesentenceiscorrect,say“True”aloud,ifnot,say“False”1.Adiodeisnotthesimplestsemiconductordevice.2.TheP-Njunctionismadeofsemiconductormaterial.3.Adiodeis

7、forwardbiasedwhenthevoltageofitsanodeislowerthanthevoltageofitscathode.4.TheP-typematerialiscalledtheanode.5.Atransistorhasthreeelectrodes.Ⅲ.TranslatethefollowingsentencesintoChinese.1.Itisatwo-terminaldevicecontainingasingleP-Njunction.2.TheP-Njunctio

8、nismadeofsemiconductormaterials.3.Transistorsaremadefromthreelaerysofsemiconductors.4.Thediodeisreversebiasedwhenvoltageofitsanodeislowerthanthevoltageofitscathode.5.Adiodeisthesimplestsemiconductordevice.5.现在分词与过去分词的区别现在分词表示主动意义,表示正在进行