電機(jī)檢修高級(jí)工技能鑒定題庫

1、Delegatesstaff:Hello!intherunuptotheSpringFestivalweheldonesessionoffourstaffrepresentativesConference2013wkshopfullbackin2012carefulanalysisofthecurrentsituationdiscuss2013developmentplans.Hereonbehalfofmycompany2013wkr

2、eptstotheGeneralAssemblyfconsideration.PillarI2012backin2012XXpowercompaniesadheretothepartys17greatspiritfguidancecomprehensivelyimplementthescientificconceptofdevelopmentpromotingcostleadershipstrategystardsfocusonimpl

3、ementationleanmanagementcontinuouslyimprovesmoothpresentsafetysituationofenterprisemanagementbusinessmanagementcontrolscientificstardizedthededicationofstaffmanageaharmoniousdemocraticatmosphereofthegoodsituation.Mainind

4、icatsareasfollows:thebatteryindicat:powergenerationtotaled7.815billionkWhbeyondtheannualbudgetimplementationcapacityof315millionkWhanincreaseof757millionkWh.Salestotaled7.425billionkWhexceedingsalesof330millionkWhtheannu

5、alExecutivebudgetanincreaseof729millionkWh.Securitymeasures:unplannedoutages2.5times.Nopersonalinjuryaccidentoccurrednomajaccidentabovenomajfireaccidentswithoutenvironmentalpollutionaccidentssafetyfthreeconsecutiveyearst

6、omaintainstabilitytogoodposture.–Businessfinancialindicats:totalprofitsof255millionYuanbeyondtheannualbudgetof207millionYuanbeyondtheDatangcompanyindex41.89millionYuananincreaseof1.76millionYuanFCMassessmentatgradefour.E

7、nergy:powersupplystardcoalcompleting312.25gkWhdown0.1gkWhintegratedauxiliarypowerconsumptionratioin5.12%down0.26%pollutantemissionsperfmancegreatlyreducedcomparedtolastyearcarbon0.09gkWhsulfurdioxide0.104gkWhNOx0.512gkWh

8、dustremovalefficiencyofmethan99.8%.Reliabilityindex:equivalentavailabilityfactin93.47%increased7.95%fromayearearlier.Equivalentfcedoutagerate0.08%0.16%reductionoverthesameperiodayearearlier.Majachievements:firstweshoulda

9、dheretothetwo“managementsystem“basisstrengtheningtechnologicalresearchstrengthenhiddenhazardscontrolintrinsicsafetyEnterpriseconstructiontooknewsteps.Thetwo“managementsystem“fimprovement.Focusonpromotingthepowerofthecomp

10、anymanagementsystemtheapplicationimplementationofthesafetyloopfivestarmanagementsystemimprovethesafetymanagementsystemrealizethesystemofsafetycontrol.Furtherregulatesecurityroutinessafetysupervisionmanagementwkroletoplay

11、toachieveclosedloop.Strengtheningthesupervisionmanagementofhabitualviolationofstrengtheningthesafetysupervisionofoutsourcingcontracts.Carriedoutinspringautumnofsecurityinspectionsfloodcontrolinspectionsafetyproductionmon

12、thdaysupervisionofproductionsafetytheOlympicGamesotheractivitiescomprehensivetampingSafetyFoundation...Troubleshootingmanagementmechanismgivefullplaytoroleoftechnicalsupervisionrealizationoftroubleshootingmanagementimpro

13、vedprocessmanagement.Thisyearcompletedtheboilerlowerheaderleakageboilerpressureamajriskmanagementcompleted29ofgreatrisks3Generalproblemsofgovernance.Completechemistrylabconstructionthermalcontrolcompletetheboilerscaleint

14、egratedmanagementhostshaftingvibrationof10scientifictechnologicalprojectssuchas.Completesupercritical630MWonlinesimulationsystemdevelopmentapplicationofcirculatingwaterMCCstbypowertransfmationthetransfmationofdesulfuriza

15、tionwastewatertheunitwatersupplysystemofcomprehensivetreatmentdisgevalvemodificationofcoalmill5keytechnologicaltransfmationprojectsgrouphealthisimproved.Sciencetechnologyinnovationisfurtherincreased.Strengthentheacterist

16、icsofsupercriticalunitmajissuesgraduallyclearingtheparticularityofsupercriticalunitregularity.Developedmotoiltimemanagementswitchactiontimesstatisticscoalaidedmeasurementsoftwareimprovestheproductionlevelofleanmanagement

17、.Increasedinvestmentinsciencetechnologyreptingsciencetechnologyprojects14technicalprojecttotalcostpercentageofthetotalannualproductionoutputof0.25%.“Largescalecoalfiredpowerplantfluegasdesulfurizationdenitrificationcompl

18、etedevelopmentapplicationofkeytechnologies“projectwonthenationalsciencetechnologyprogresssecondprize.630MWsupercriticalunitsoptimizedcontrolstrategiesthe630MWdevelopmentapplicationofonlinesimulationsystemfsupercriticalun

19、itssupercritical600MWunitsofturbinedrivenboilerfeedpumpsetofcomprehensivetreatmentofdefectsDatangtechnologyrespectivelyonetwothird.Meanwhileinfmationtechnologyachievementsthecompanywasnamed“Chinapowerinfmationtechnologyb

20、enchmarkingenterprises.“Repairmaintenancehasimprovedfurther.Modifytheinspectionstardsstardsonaregularbasisstardizingwkprocedurescheckinginspectionproject.DeepeningtheBFSsystemimplementsmaintenanceinfmationshared.Reganizi

21、ngRBlogicagainensurethesuccessoftheRB.Innovatingthemechanismofmaintenancemanagementimplementedaprojectmanagersystem.Successfulcompletionoftwoautonomousmaintenancereliabilityimprovedsteadily.Implementingtwoclevelmaintenan

22、ceprojectthemselves48.7%42.3%respectively.AccomplishtwocirculatingpumpsrepairoverhauloffourMillsmaintenanceteamstogetexercise.Promotethewkofenergysavingconsumptionreducingcompletetheunitenergyconsumptiondiagnosisplantwat

23、erbalancetest10energysavingprojects.Secondweshouldadhereto“three“ontheeconomicbenefitsofimprovingoutreach電機(jī)檢修高級(jí)工技能鑒定題庫一.改錯(cuò)題：1、導(dǎo)線越長(zhǎng)，電阻越大，電導(dǎo)也就越大。（X）2、正弦規(guī)律變化的交流電的三要素是：有效值、頻率和初相角。（X）3、繞線式三相異步電動(dòng)機(jī)常采用降低端電壓的方法來改善起動(dòng)性能。（X）4、同步發(fā)電機(jī)勵(lì)

24、磁繞組的直流電源極性改變，而轉(zhuǎn)子旋轉(zhuǎn)方向不變時(shí)，定子三相交流電動(dòng)勢(shì)的相序?qū)⒉蛔?。（√?、額定電壓是指相電壓。（X）6、三相異步電動(dòng)機(jī)降壓起動(dòng)是為了減小起動(dòng)電流，同時(shí)也增加起動(dòng)轉(zhuǎn)矩。（X）7、電動(dòng)機(jī)每相繞組在某一極面下所占的寬度叫做相帶，它可以用所占的電角度和所占的槽數(shù)來表示。（√）8、電動(dòng)機(jī)定子槽數(shù)與轉(zhuǎn)子槽數(shù)一定相等的。（X）9、汽輪發(fā)電機(jī)只能滯相運(yùn)行。（X）10、在進(jìn)行三相交流電機(jī)繞組連接時(shí)，只要保證每相繞圈數(shù)相等，就能夠保證產(chǎn)生三

25、相平衡的電動(dòng)勢(shì)。（X）11、高壓設(shè)備全部停電的工作系指室內(nèi)高壓設(shè)備全部停電(包括架空線路與電纜引入線在內(nèi))，以及室外高壓設(shè)備全部停電(包括架空線路與電纜引入線在內(nèi))。（X）12、同步發(fā)電機(jī)的自同步是指不檢查同期條件是否滿足的情況下，且勵(lì)磁繞組開路的狀態(tài)下，將發(fā)電機(jī)并列。（X）13、同步發(fā)電機(jī)調(diào)相運(yùn)行時(shí)，可向系統(tǒng)送出少量有功功率以及無功功率。（X）14、一臺(tái)定子繞組星形連接的三相異步電動(dòng)機(jī)，若在空載運(yùn)行時(shí)A相繞組斷線，則電動(dòng)機(jī)必將停止轉(zhuǎn)動(dòng)

26、。（X）15、水冷汽輪發(fā)電機(jī)的轉(zhuǎn)子水系統(tǒng)的供水總壓力等于將水甩出的離心壓力與轉(zhuǎn)子進(jìn)水處施加壓力之和。（√）16、系統(tǒng)有功過剩時(shí)，會(huì)導(dǎo)致頻率和電壓的升高。（√）17、深槽型的鼠籠式交流異步電動(dòng)機(jī)的起動(dòng)性能與運(yùn)行性能均比普通籠型的異步電動(dòng)機(jī)好。（X）18、盡量采用先進(jìn)的工藝和新技術(shù)、新辦法，積極推廣新材料、新工具，提高工作效率，縮短檢修工期是檢修機(jī)構(gòu)的基本職責(zé)之一。（√）19、在系統(tǒng)故障的緊急情況下，允許同步發(fā)電機(jī)采用非同期并列方法。（X）

27、20、并勵(lì)直流發(fā)電機(jī)只要主磁路有剩磁，電樞繞組與勵(lì)磁繞組連接正確，并保證后續(xù)磁場(chǎng)與剩磁同方向，就能建立工作所需的電壓。（X）21、直流電機(jī)幾何中性線與物理中性線始終是重合的。（X）22、允許同步發(fā)電機(jī)在未勵(lì)磁的情況下，先由原動(dòng)機(jī)將發(fā)電機(jī)轉(zhuǎn)速升至額定轉(zhuǎn)速附近，合上主隔離開關(guān)，再給上勵(lì)磁電流，依靠自同步轉(zhuǎn)矩將發(fā)電機(jī)拉入同步。（√）23、在測(cè)試發(fā)電機(jī)定子相間及相對(duì)地的絕緣電阻前要進(jìn)行充分的放電即預(yù)放電，如果預(yù)放電時(shí)間過短，則所測(cè)得的絕緣電阻值

28、將偏小，吸收比將偏大。（X）24、由于發(fā)電機(jī)軸電壓一般只有3～5V，故不會(huì)對(duì)發(fā)電機(jī)產(chǎn)生不良后果。（X）25、(高級(jí)工判斷題較易相關(guān)知識(shí)核心要素標(biāo)準(zhǔn)庫)設(shè)備檢修必須有計(jì)劃進(jìn)行，絕不允許非計(jì)劃?rùn)z修。（X）26、《電業(yè)事故調(diào)查規(guī)程》所規(guī)定的事故包括人身傷亡事故；設(shè)備異常運(yùn)行、少發(fā)、停發(fā)事故；電能質(zhì)量降低事故；經(jīng)濟(jì)損失事故；其他事故等五大類。（√）27、電弧燒傷、熔化金屬滲入人體皮膚和火焰燒傷屬于電擊傷。（X）Delegatesstaff:He

29、llo!intherunuptotheSpringFestivalweheldonesessionoffourstaffrepresentativesConference2013wkshopfullbackin2012carefulanalysisofthecurrentsituationdiscuss2013developmentplans.Hereonbehalfofmycompany2013wkreptstotheGeneralA

30、ssemblyfconsideration.PillarI2012backin2012XXpowercompaniesadheretothepartys17greatspiritfguidancecomprehensivelyimplementthescientificconceptofdevelopmentpromotingcostleadershipstrategystardsfocusonimplementationleanman

31、agementcontinuouslyimprovesmoothpresentsafetysituationofenterprisemanagementbusinessmanagementcontrolscientificstardizedthededicationofstaffmanageaharmoniousdemocraticatmosphereofthegoodsituation.Mainindicatsareasfollows

32、:thebatteryindicat:powergenerationtotaled7.815billionkWhbeyondtheannualbudgetimplementationcapacityof315millionkWhanincreaseof757millionkWh.Salestotaled7.425billionkWhexceedingsalesof330millionkWhtheannualExecutivebudget

33、anincreaseof729millionkWh.Securitymeasures:unplannedoutages2.5times.Nopersonalinjuryaccidentoccurrednomajaccidentabovenomajfireaccidentswithoutenvironmentalpollutionaccidentssafetyfthreeconsecutiveyearstomaintainstabilit

34、ytogoodposture.–Businessfinancialindicats:totalprofitsof255millionYuanbeyondtheannualbudgetof207millionYuanbeyondtheDatangcompanyindex41.89millionYuananincreaseof1.76millionYuanFCMassessmentatgradefour.Energy:powersupply

35、stardcoalcompleting312.25gkWhdown0.1gkWhintegratedauxiliarypowerconsumptionratioin5.12%down0.26%pollutantemissionsperfmancegreatlyreducedcomparedtolastyearcarbon0.09gkWhsulfurdioxide0.104gkWhNOx0.512gkWhdustremovaleffici

36、encyofmethan99.8%.Reliabilityindex:equivalentavailabilityfactin93.47%increased7.95%fromayearearlier.Equivalentfcedoutagerate0.08%0.16%reductionoverthesameperiodayearearlier.Majachievements:firstweshouldadheretothetwo“man

37、agementsystem“basisstrengtheningtechnologicalresearchstrengthenhiddenhazardscontrolintrinsicsafetyEnterpriseconstructiontooknewsteps.Thetwo“managementsystem“fimprovement.Focusonpromotingthepowerofthecompanymanagementsyst

38、emtheapplicationimplementationofthesafetyloopfivestarmanagementsystemimprovethesafetymanagementsystemrealizethesystemofsafetycontrol.Furtherregulatesecurityroutinessafetysupervisionmanagementwkroletoplaytoachieveclosedlo

39、op.Strengtheningthesupervisionmanagementofhabitualviolationofstrengtheningthesafetysupervisionofoutsourcingcontracts.Carriedoutinspringautumnofsecurityinspectionsfloodcontrolinspectionsafetyproductionmonthdaysupervisiono

40、fproductionsafetytheOlympicGamesotheractivitiescomprehensivetampingSafetyFoundation...Troubleshootingmanagementmechanismgivefullplaytoroleoftechnicalsupervisionrealizationoftroubleshootingmanagementimprovedprocessmanagem

41、ent.Thisyearcompletedtheboilerlowerheaderleakageboilerpressureamajriskmanagementcompleted29ofgreatrisks3Generalproblemsofgovernance.Completechemistrylabconstructionthermalcontrolcompletetheboilerscaleintegratedmanagement

42、hostshaftingvibrationof10scientifictechnologicalprojectssuchas.Completesupercritical630MWonlinesimulationsystemdevelopmentapplicationofcirculatingwaterMCCstbypowertransfmationthetransfmationofdesulfurizationwastewaterthe

43、unitwatersupplysystemofcomprehensivetreatmentdisgevalvemodificationofcoalmill5keytechnologicaltransfmationprojectsgrouphealthisimproved.Sciencetechnologyinnovationisfurtherincreased.Strengthentheacteristicsofsupercritica

44、lunitmajissuesgraduallyclearingtheparticularityofsupercriticalunitregularity.Developedmotoiltimemanagementswitchactiontimesstatisticscoalaidedmeasurementsoftwareimprovestheproductionlevelofleanmanagement.Increasedinvestm

45、entinsciencetechnologyreptingsciencetechnologyprojects14technicalprojecttotalcostpercentageofthetotalannualproductionoutputof0.25%.“Largescalecoalfiredpowerplantfluegasdesulfurizationdenitrificationcompletedevelopmentapp

46、licationofkeytechnologies“projectwonthenationalsciencetechnologyprogresssecondprize.630MWsupercriticalunitsoptimizedcontrolstrategiesthe630MWdevelopmentapplicationofonlinesimulationsystemfsupercriticalunitssupercritical6

47、00MWunitsofturbinedrivenboilerfeedpumpsetofcomprehensivetreatmentofdefectsDatangtechnologyrespectivelyonetwothird.Meanwhileinfmationtechnologyachievementsthecompanywasnamed“Chinapowerinfmationtechnologybenchmarkingenterp

48、rises.“Repairmaintenancehasimprovedfurther.Modifytheinspectionstardsstardsonaregularbasisstardizingwkprocedurescheckinginspectionproject.DeepeningtheBFSsystemimplementsmaintenanceinfmationshared.ReganizingRBlogicagainens

49、urethesuccessoftheRB.Innovatingthemechanismofmaintenancemanagementimplementedaprojectmanagersystem.Successfulcompletionoftwoautonomousmaintenancereliabilityimprovedsteadily.Implementingtwoclevelmaintenanceprojectthemselv

50、es48.7%42.3%respectively.AccomplishtwocirculatingpumpsrepairoverhauloffourMillsmaintenanceteamstogetexercise.Promotethewkofenergysavingconsumptionreducingcompletetheunitenergyconsumptiondiagnosisplantwaterbalancetest10en

51、ergysavingprojects.Secondweshouldadhereto“three“ontheeconomicbenefitsofimprovingoutreach2.下面說法正確的是（C）。（A）電壓沒有方向性；（B）電壓和電動(dòng)勢(shì)是同一概念；（C）電位是標(biāo)量，沒有方向性，但它的值可為正、負(fù)或零；（D）電壓即是電位。3、硅管比鍺管受溫變影響（B）。（A）較大；（B）較?。唬–）相同；（D）不一定。4、有一內(nèi)阻為0.15Ω的電

52、流表，最大量程是1A，現(xiàn)給它并聯(lián)一個(gè)0.05Ω的小電阻，則這個(gè)電流表的量程可擴(kuò)大為（B）。（A）3A；（B）4A；（C）6A；（D）9A。5、電壓表A內(nèi)阻為20000Ω，電壓表B內(nèi)阻為4000Ω，量程都是150V，當(dāng)它們串聯(lián)在120V的電源上時(shí)，電壓表B的讀數(shù)是（D）。（A）120V；（B）80V；（C）40V；（D）20V。6、電功率的計(jì)算公式P＝UI，式中U表示電器兩端的電壓，I表示通過電器的電流強(qiáng)度。此公式適用于（B）（A）計(jì)算電

53、風(fēng)扇的電功率；（B）計(jì)算電燈泡電功率；（C）計(jì)算電容器電功率；（D）計(jì)算電動(dòng)機(jī)功率。7、恢復(fù)線路送電的操作順序是（B）。（A）合電源側(cè)隔離開關(guān)合斷路器合線路側(cè)隔離開關(guān)；(B)合電源側(cè)隔離開關(guān)合線路側(cè)隔離開關(guān)合斷路器；（C）合線路側(cè)隔離開關(guān)合電源側(cè)隔離開關(guān)合斷路器；（D）合斷路器合線路側(cè)隔離開關(guān)合電源側(cè)隔離開關(guān)。8、感性負(fù)載的電樞反應(yīng)將使發(fā)電機(jī)氣隙合成磁場(chǎng)(A)。（A）減小；（B)增大；（C）不變；（D）發(fā)生畸變。9、三相鼠籠式電動(dòng)機(jī)銘牌

54、上標(biāo)明額定電壓為380V／220V，Y，d接法，今接到380V電源上，可選用的降壓起動(dòng)方式是（C）。（A）可采用星三角降壓起動(dòng)；（B）可采用轉(zhuǎn)子回路串適當(dāng)電阻的方法起動(dòng)；（C）可采用自耦變壓器降壓起動(dòng)；（D）可采用轉(zhuǎn)子回路串入頻敏電阻的起動(dòng)。10、對(duì)于并列運(yùn)行的發(fā)電機(jī)組，分配負(fù)荷按(C)原則分配時(shí)，全網(wǎng)最經(jīng)濟(jì)。（A）單機(jī)容量；（B）微增率；（C）等微增率；（D）效率。11、采用雙層繞組的直流電機(jī)繞組元件數(shù)與換向片的數(shù)相比（D）。（A）多

55、一倍；（B）少一倍；（C）少一片；（D）相等。12、為改善直流電機(jī)的換向性能，換向極繞組應(yīng)（A）。（A）與電樞繞組串聯(lián)，并且極性正確；（B）與電樞繞組并聯(lián)，并且極性正確；（C）與補(bǔ)償繞組并聯(lián)，并且極性正確；（D）與勵(lì)磁繞組串聯(lián)，并且極性正確。13、繞線式異步電動(dòng)機(jī)轉(zhuǎn)子繞組為（A）。（A）三相對(duì)稱繞組；（B）單相繞組；（C）對(duì)稱多相繞組，其相數(shù)等于槽數(shù)除以極對(duì)數(shù)；（D）鼠籠式繞組。14、有一臺(tái)星形連接380V三相異步電動(dòng)機(jī)，現(xiàn)將繞組改接成