电工基础试题(一)(basic examination questions of electrical engineering )

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时间:2018-07-11

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1、电工基础试题(一)(BasicexaminationquestionsofElectricalEngineering(1))Thebasicquestionsofelectrician(a).Txttostayuplate,becausethecouragetoendtheday;stayinbedbecauseofthecouragetostarttheday.Afriendistoseethroughyouwhostillloveyou.Thenationalelectricalnetworkoperationoflow-voltagepartelectricianf

2、oundationknowledgetheoryoflicensingexamreviewquestionsSomebloggersandInternetusersshouldbeinvitedtocollectelectricalknowledgereviewquestions,examination,testcentersandotherblogpublishedforuserstoborrow,electricalupgradepromotionexam,examcandidates,jobtrainingandexamination,recertification

3、examinationofevidence,electricalnetworktheorytestworkpermitpeacelearningreference.Basicknowledgeofelectricalelectricianisthefoundationofalltypes,thispaperselectedquestions,istheelectricianfoundationknowledgetestcontent,butalsoanimportantcontentoftheprimaryandintermediateelectricianjobtrai

4、ning,thepromotionexamination.Familiarwithandmasterthebasicknowledgeofelectrical,allowsyoutofurtherexplorethemysteriesofelectricianordealwithallkindsofexaminationswithease,ease,relaxedandhappytofinishthework.(theanswerisonlyforreference,welcomethefriendslookingforcarp,whichmaybewrong)From(

5、andfamily)AchoiceThebasicunitofchargeis1.(C).A.secondB.ampC.CoulombD.kgIsequalto2.1amperes(B)a.A.103B.106C.109D.1023.auniformwirestretchedfor3timestheoriginallength,whiletheresistancetotheoriginal(Ctimes).A.3B.1/3C.9D.1/9The4.generationofseriesresonantcondition(C).A.XL,XcB.XLXcC.XLD.<=XcX

6、L=XcE.XL=XcAttheendofthe5.voltageno-loadlongHVtransmissionlines(B)endvoltage.A.belowB.ishigherthanC.equaltoD.lessthanorequalto6.powerthree-phasesymmetricalload,whichisbetweenthephaseangle(B).TheA.linevoltageandlinecurrentB.phasevoltageandlinecurrentTheC.linevoltageandphasecurrentandphasev

7、oltagephasecurrentD.7.whenthepowerfrequencyincreases,respectivelywithR,Lbulbseries,C3circuitinparallel,and(B)increasethebrightnessofthebulbseries.A.RB.LC.CD.RandLE.RandC8.oftheratedvoltageis220Vthelightbulbinthe110Vpowersupply,lightingpoweristheoriginal(B).A.2B.4C.1

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《电工基础试题(一)(basic examination questions of electrical engineering )》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、电工基础试题(一)(BasicexaminationquestionsofElectricalEngineering(1))Thebasicquestionsofelectrician(a).Txttostayuplate,becausethecouragetoendtheday;stayinbedbecauseofthecouragetostarttheday.Afriendistoseethroughyouwhostillloveyou.Thenationalelectricalnetworkoperationoflow-voltagepartelectricianf

2、oundationknowledgetheoryoflicensingexamreviewquestionsSomebloggersandInternetusersshouldbeinvitedtocollectelectricalknowledgereviewquestions,examination,testcentersandotherblogpublishedforuserstoborrow,electricalupgradepromotionexam,examcandidates,jobtrainingandexamination,recertification

3、examinationofevidence,electricalnetworktheorytestworkpermitpeacelearningreference.Basicknowledgeofelectricalelectricianisthefoundationofalltypes,thispaperselectedquestions,istheelectricianfoundationknowledgetestcontent,butalsoanimportantcontentoftheprimaryandintermediateelectricianjobtrai

4、ning,thepromotionexamination.Familiarwithandmasterthebasicknowledgeofelectrical,allowsyoutofurtherexplorethemysteriesofelectricianordealwithallkindsofexaminationswithease,ease,relaxedandhappytofinishthework.(theanswerisonlyforreference,welcomethefriendslookingforcarp,whichmaybewrong)From(

5、andfamily)AchoiceThebasicunitofchargeis1.(C).A.secondB.ampC.CoulombD.kgIsequalto2.1amperes(B)a.A.103B.106C.109D.1023.auniformwirestretchedfor3timestheoriginallength,whiletheresistancetotheoriginal(Ctimes).A.3B.1/3C.9D.1/9The4.generationofseriesresonantcondition(C).A.XL,XcB.XLXcC.XLD.<=XcX

6、L=XcE.XL=XcAttheendofthe5.voltageno-loadlongHVtransmissionlines(B)endvoltage.A.belowB.ishigherthanC.equaltoD.lessthanorequalto6.powerthree-phasesymmetricalload,whichisbetweenthephaseangle(B).TheA.linevoltageandlinecurrentB.phasevoltageandlinecurrentTheC.linevoltageandphasecurrentandphasev

7、oltagephasecurrentD.7.whenthepowerfrequencyincreases,respectivelywithR,Lbulbseries,C3circuitinparallel,and(B)increasethebrightnessofthebulbseries.A.RB.LC.CD.RandLE.RandC8.oftheratedvoltageis220Vthelightbulbinthe110Vpowersupply,lightingpoweristheoriginal(B).A.2B.4C.1

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