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低压电工模拟题

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livingstandards,poorfarmersinlessthancompleteeliminationof4600Yuan,8949,19008."Fivewatersrule":theCountyinvested2.169billionyuan,similarcountieslinethecity'sfirstcompletethe42kmofsewagepipenetworkconstruction,completionraterankedfirstinthecity,wontheprovincialruralsewagetreatmentworkbetter;keypollutionsourcessuchaselectroplating,papermaking,chemicalindustrymanagementthroughverificationandacceptanceofthemunicipalgovernment,theCountyremovedBlackandodorousRiver,Riverwaste,beginningofriverecologicalrestorationeffects."Threemodifiedasplit"aspects:Countytotaldemolitionillegalareaup2.759millionsquaremeters,completedCityissuedannualtaskof153%,splitagainstarearankingcitysecond;completed"threemodified"area4.846millionsquaremeters,completedCityissuedannualtaskof403%,rankingcitythird,whichvillageintheatargetcompletedtotalcityrankingfirst;CountyGovernmentwasnamedcitylevel"threemodifiedasplit"workadvanced.Theseachievementsarehardwonandshouldbeappreciated.However,wearefullyaware,thenewperiod,andworkinthecountrysideandtheenvironmentfacinghigherstandardsandrequirements,provincialpartyCommitteeofferedtohighlevelbuildacomprehensivewell-offsocietygoalrequires"nofilth,dirtyenvironmentillegalbuildings,intoawell-off";municipalpartyCommitteealsoproposestobuildintothewell-offbenchmarkgoalsofthecity.Comparedwiththesuperiorclaim,"SouthGateofXXbeautiful"goal,myCounty"SanNong"andenvironmentthereareanumberofweaknessesandgaps,highlightedinthefollowingfiveaspects:first,agricultureremained"low"pattern."Low"isreflectedinthequalityandlow;short,valueaddedoftheindustrychainislow;123fusionyieldlowemployeeage,lowquality."Small"isreflectedinsmaller,specializedcooperativesthroughouttheCountytherewere3,396,buton
thescaleoftoolittle."San"isreflectedinproduction,management,services,decentralized,centralized,standardized,brand,informationandorganizationallevelisnothigh.Second,thecountrysideisstillin"dirty"phase."Dirty"isdirtyofruralsanitationsituationhasnotchanged."Chaos"isavillageinruralhousingconstructionplanning,constructionofdisorder,nodrawings,noconstruction,novetting"fourno"phenomenon,heaplyingthere."Bad"istheweakruralbase,villagegovernanceispoor.Thirdly,farmerscontinuedtobe"persistent"look."Old"isaging,rurallaborforceaccountedfor70%overtheageof50."Big"isthatthereformmeasuresgroundresistance,suchasthetransactionsofpropertyrights,landreplacement;publicservicesupplygap,ruraleducation,healthcare,pensionsandotherservicescannotmeetthedemandstilldifficultforpovertyalleviation,withemphasisonpovertyalleviationand191."Hard"isa"peasants,peasants.Fourwatereffectsstilllacks试题一
一、判断题
第1题:纯电感电路中电压和电流的有效值之间满足欧姆定律。（）A:真确B:错误
第2题:尽管不引燃邻近的可燃物，不烧坏相连接设备的绝缘，不烧断导线，不烫伤工作人员，裸导线的运行温度也不允许超过70℃。(A:真确B:错误
第3题:相位差就是两个同频率正弦交流电的初相角之差。（）A:真确B:错误
第4题:共发射极电路又称为射极输出器。（）A:真确B:错误
第5题:架空线路巡视分为定期巡视和不定期巡视。（）A:真确B:错误
第6题:油浸式电容器是有爆炸危险的电气设备。(A:真确B:错误
第7题:生产经营单位的从业人员有依法履行安全生产的义务。(A:真确B:错误
第8题:纯电阻电路中的电压和电流是同频率、不同相位的正弦量。（）A:真确B:错误
第9题:填写操作票应注意拉开或合上各种开关后检查开关是否在断开或合闸位置。(
A:真确B:错误
第10题:衡量电能质量的三个参数是：电压、频率、波形。(A:真确B:错误
第11题:从业人员享有批评、检举控告权和拒绝违章指挥、强令冒险作业的权利。生产经营单位不得因从业人员行使上述权利而对其进行打击报复，如：降低工资、降低福利待遇和解除劳动合同等。(A:真确B:错误
第12题:闭合线圈中产生感生电动势的方向可用楞次定律来判断。（）A:真确B:错误
第13题:用接地电阻测量仪测量接地电阻时，电压极距被测接地体不得小于40m，电流极距被测接地体不得小于20m。(A:真确B:错误
第14题:进户线的长度不应超过25m，并且不应有接头，同一用电单位只应设一个进户点。(A:真确B:错误
第15题:为了不影响电路正常工作，电流表的内阻越小越好，而电压表的内阻越大越好。(
A:真确B:错误
第16题:电感线圈对直流电流的阻力很大，通交流电时可认为短路。（）A:真确B:错误
compelling."Althoughthe"fivewatertreatment"alot,workveryhard,butthefloodofscientificenough,beforethetreatmentandwaterqualityimprovementafterthetreatmenteffectisnotobvious,county-widefocusonriverstilllargelyinferiorfivewater,swimmingtheRivercouldnotbefound.Fiveis"threetosplit"taskstillliesahead.Noticeofstockthere,newconstructiondidnotreceivetimelytreatmenteveryyear(suchasancestralhallasunauthorisedrepeated,contrarytothecreatedworkisverydifferentfromtheprovincialandmunicipalstandards.Meanwhile,whenimplementationisnotinplace,generallyonlyfocusonillegalconstructiondemolished,failingthatsplitthatisclear,combineddemolition,insufficientattentiontoreconstructionofoldresidentialareas,urbanvillages,shantytownsandpromotepoor.osolvetheseproblems,wemustenhancethesenseofresponsibilityandurgency,insistonproblem-oriented,totakestrongmeasures,effortstomakeupthe
"threeagriculture"and"fivewatertreatment","threetosplita"shortBoard,constructionofcomprehensivesafeguards,"SouthGateofXXbeautiful"goalofrealizing.II,andprecisionShipolicy,andmanpowerplayinggood"threeagricultural"workprotracted"threeagricultural"workisdoeconomicsocialdevelopmenttheworkofbased,countylevelsthesectortoaccordingto"basedagricultural,andandmanpowerrural,anddevelopmentfarmers"ofrequirements,insistedagriculturalruralbasedstatusnotshake,insistedhuinongkulakpolicynotweakened,insistedreforminnovationtestnotstop,effortscreatednewera"threeagricultural"worknewsituation.(Atomakeagriculturemore.Toestablishtheconceptofagriculturearoundthepeopledemand,andcomprehensivelypromotethesupplysideofagriculturestructuralreform,strivetoenhancethequalityandefficiencyofagricultureandcompetitiveness.Focusisondoingthefourarticles.Oneisthesteadyincreaseofgrainarticle.Alwaystightenthestringforfoodsecurity,"ricebag"catchinhand,toholdlandintheadjustmentofagriculturalplantingstructureinthe"redline."Acceleratingtheconstructionofgrainribbons,improvingagriculturalinfrastructure,enhancefoodproductioncapacity,improvethequalityofagriculturalproducts,effectively"steadyincreaseofgrain"andmaintain"tongue."Second,industryconvergencearticle.Enhancethelevelofconcentration,intensificationofagriculture,creatingproduction,processing,distribution,salesandserviceinoneoftheagriculturalindustrialchain,tobreakdownthevaluechain,improveaddedvalue.Pushingforward"theInternet+agricultural"modeltoimproveagriculturalproduction,management,andservicelevel,innovatingthemodeofe-commercemarketingofagriculturalproducts,solvethedifficultproblemofsalesofagriculturalproducts.Agricultureandtourism,education,culture,health,pensionandotherdeepintegration,developleisure,travel

livingstandards,poorfarmersinlessthancompleteeliminationof4600Yuan,8949,19008."Fivewatersrule":theCountyinvested2.169billionyuan,similarcountieslinethecity'sfirstcompletethe42kmofsewagepipenetworkconstruction,completionraterankedfirstinthecity,wontheprovincialruralsewagetreatmentworkbetter;keypollutionsourcessuchaselectroplating,papermaking,chemicalindustrymanagementthroughverificationandacceptanceofthemunicipalgovernment,theCountyremovedBlackandodorousRiver,Riverwaste,beginningofriverecologicalrestorationeffects."Threemodifiedasplit"aspects:Countytotaldemolitionillegalareaup2.759millionsquaremeters,completedCityissuedannualtaskof153%,splitagainstarearankingcitysecond;completed"threemodified"area4.846millionsquaremeters,completedCityissuedannualtaskof403%,rankingcitythird,whichvillageintheatargetcompletedtotalcityrankingfirst;CountyGovernmentwasnamedcitylevel"threemodifiedasplit"workadvanced.Theseachievementsarehardwonandshouldbeappreciated.However,wearefullyaware,thenewperiod,andworkinthecountrysideandtheenvironmentfacinghigherstandardsandrequirements,provincialpartyCommitteeofferedtohighlevelbuildacomprehensivewell-offsocietygoalrequires"nofilth,dirtyenvironmentillegalbuildings,intoawell-off";municipalpartyCommitteealsoproposestobuildintothewell-offbenchmarkgoalsofthecity.Comparedwiththesuperiorclaim,"SouthGateofXXbeautiful"goal,myCounty"SanNong"andenvironmentthereareanumberofweaknessesandgaps,highlightedinthefollowingfiveaspects:first,agricultureremained"low"pattern."Low"isreflectedinthequalityandlow;short,valueaddedoftheindustrychainislow;123fusionyieldlowemployeeage,lowquality."Small"isreflectedinsmaller,specializedcooperativesthroughouttheCountytherewere3,396,buton
thescaleoftoolittle."San"isreflectedinproduction,management,services,decentralized,centralized,standardized,brand,informationandorganizationallevelisnothigh.Second,thecountrysideisstillin"dirty"phase."Dirty"isdirtyofruralsanitationsituationhasnotchanged."Chaos"isavillageinruralhousingconstructionplanning,constructionofdisorder,nodrawings,noconstruction,novetting"fourno"phenomenon,heaplyingthere."Bad"istheweakruralbase,villagegovernanceispoor.Thirdly,farmerscontinuedtobe"persistent"look."Old"isaging,rurallaborforceaccountedfor70%overtheageof50."Big"isthatthereformmeasuresgroundresistance,suchasthetransactionsofpropertyrights,landreplacement;publicservicesupplygap,ruraleducation,healthcare,pensionsandotherservicescannotmeetthedemandstilldifficultforpovertyalleviation,withemphasisonpovertyalleviationand191."Hard"isa"peasants,peasants.Fourwatereffectsstilllacks
第17题:摆脱电流是人能自主摆脱带电体的最大电流，人的工频摆脱电流约为10A。
A:真确B:错误
第18题:新参加电气工作的人员不得单独工作。（）A:真确B:错误
第19题:运行中的高压配电装置的二次回路，每年至少测量一次绝缘电阻。(A:真确B:错误
第20题:按导线安全载流量选择导线截面能满足导线发热的要求，但不一定能满足电压损失的要求。(A:真确B:错误
第21题:电容器由外壳和内芯组成。（）A:真确B:错误
第22题:通常要求电能表与配电装置装在一处。（）A:真确B:错误
第23题:屏护就是用防护装置将人体与带电体隔离开来。（）A:真确B:错误
第24题:居民区10kV架空线路对地面高度不得小于6m。(A:真确B:错误
第25题:由于流过线圈本身的电流发生变化而引起的电磁感应属于自感现象。（）
A:真确B:错误
第26题:漏电保护装置能防止单相电击和两相电击。A:真确B:错误
第27题:不对称负载星形连接时，中线上可以安装开关和熔断器。（）A:真确B:错误
第28题:移动式电气设备的电源线必须采用绝缘良好的多股铜芯绝缘软护套线。(
A:真确B:错误
第29题:纯电容电路中电压相位超前电流相位90°。（）A:真确B:错误
第30题:从业人员在作业过程中，应当遵守本单位的安全生产规章制度和操作规程。(
A:真确B:错误
二、单选题
第1题:柱上变压器底部距地面高度不应小于(m。A:1B:1.5C:2D:2.5
第2题:电容器是一种（）元件。A:供电B:储能C:阻性D:控制
第3题:磁电系测量机构主要由（）组成。
A:固定的磁路系统和可动的线圈B:固定的线圈和可动的磁路系统
compelling."Althoughthe"fivewatertreatment"alot,workveryhard,butthefloodofscientificenough,beforethetreatmentandwaterqualityimprovementafterthetreatmenteffectisnotobvious,county-widefocusonriverstilllargelyinferiorfivewater,swimmingtheRivercouldnotbefound.Fiveis"threetosplit"taskstillliesahead.Noticeofstockthere,newconstructiondidnotreceivetimelytreatmenteveryyear(suchasancestralhallasunauthorisedrepeated,contrarytothecreatedworkisverydifferentfromtheprovincialandmunicipalstandards.Meanwhile,whenimplementationisnotinplace,generallyonlyfocusonillegalconstructiondemolished,failingthatsplitthatisclear,combineddemolition,insufficientattentiontoreconstructionofoldresidentialareas,urbanvillages,shantytownsandpromotepoor.osolvetheseproblems,wemustenhancethesenseofresponsibilityandurgency,insistonproblem-oriented,totakestrongmeasures,effortstomakeupthe
"threeagriculture"and"fivewatertreatment","threetosplita"shortBoard,constructionofcomprehensivesafeguards,"SouthGateofXXbeautiful"goalofrealizing.II,andprecisionShipolicy,andmanpowerplayinggood"threeagricultural"workprotracted"threeagricultural"workisdoeconomicsocialdevelopmenttheworkofbased,countylevelsthesectortoaccordingto"basedagricultural,andandmanpowerrural,anddevelopmentfarmers"ofrequirements,insistedagriculturalruralbasedstatusnotshake,insistedhuinongkulakpolicynotweakened,insistedreforminnovationtestnotstop,effortscreatednewera"threeagricultural"worknewsituation.(Atomakeagriculturemore.Toestablishtheconceptofagriculturearoundthepeopledemand,andcomprehensivelypromotethesupplysideofagriculturestructuralreform,strivetoenhancethequalityandefficiencyofagricultureandcompetitiveness.Focusisondoingthefourarticles.Oneisthesteadyincreaseofgrainarticle.Alwaystightenthestringforfoodsecurity,"ricebag"catchinhand,toholdlandintheadjustmentofagriculturalplantingstructureinthe"redline."Acceleratingtheconstructionofgrainribbons,improvingagriculturalinfrastructure,enhancefoodproductioncapacity,improvethequalityofagriculturalproducts,effectively"steadyincreaseofgrain"andmaintain"tongue."Second,industryconvergencearticle.Enhancethelevelofconcentration,intensificationofagriculture,creatingproduction,processing,distribution,salesandserviceinoneoftheagriculturalindustrialchain,tobreakdownthevaluechain,improveaddedvalue.Pushingforward"theInternet+agricultural"modeltoimproveagriculturalproduction,management,andservicelevel,innovatingthemodeofe-commercemarketingofagriculturalproducts,solvethedifficultproblemofsalesofagriculturalproducts.Agricultureandtourism,education,culture,health,pensionandotherdeepintegration,developleisure,travel

livingstandards,poorfarmersinlessthancompleteeliminationof4600Yuan,8949,19008."Fivewatersrule":theCountyinvested2.169billionyuan,similarcountieslinethecity'sfirstcompletethe42kmofsewagepipenetworkconstruction,completionraterankedfirstinthecity,wontheprovincialruralsewagetreatmentworkbetter;keypollutonsourcessuchaselectroplating,papermaking,chemicalindustrymanagementthroughverificationandacceptanceofthemunicipalgovernment,theCountyremovedBlackandodorousRiver,Riverwaste,beginningofriverecologicalrestorationeffects."Threemodifiedasplit"aspects:Countytotaldemolitionillegalareaup2.759millionsquaremeters,completedCityissuedannualtaskof153%,splitagainstarearankingcitysecond;completed"threemodified"area4.846millionsquaremeters,completedCityissuedannualtaskof403%,rankingcitythird,whichvillageintheatargetcompletedtotalcityrankingfirst;CountyGovernmentwasnamedcitylevel"threemodifiedasplit"workadvanced.Theseachievementsarehardwonandshouldbeappreciated.However,wearefullyaware,thenewperiod,andworkinthecountrysideandtheenvironmentfacinghigherstandardsandrequirements,provincialpartyCommitteeofferedtohighlevelbuildacomprehensivewell-offsocietygoalrequires"nofilth,dirtyenvironmentillegalbuildings,intoawell-off";municipalpartyCommitteealsoproposestobuildintothewell-offbenchmarkgoalsofthecity.Comparedwiththesuperiorclaim,"SouthGateofXXbeautiful"goal,myCounty"SanNong"andenvironmentthereareanumberofweaknessesandgaps,highlightedinthefollowingfiveaspects:first,agricultureremained"low"pattern."Low"isreflectedinthequalityandlow;short,valueaddedoftheindustrychainislow;123fusionyieldlowemployeeage,lowquality."Small"isreflectedinsmaller,specializedcooperativesthroughouttheCountytherewere3,396,buton
thescaleoftoolittle."San"isreflectedinproduction,management,services,decentralized,centralized,standardized,brand,informationandorganizationallevelisnothigh.Second,thecountrysideisstillin"dirty"phase."Dirty"isdirtyofruralsanitationsituationhasnotchanged."Chaos"isavillageinruralhousingconstructionplanning,constructionofdisorder,nodrawings,noconstruction,novetting"fourno"phenomenon,heaplyingthere."Bad"istheweakruralbase,villagegovernanceispoor.Thirdly,farmerscontinuedtobe"persistent"look."Old"isaging,rurallaborforceaccountedfor70%overtheageof50."Big"isthatthereformmeasuresgroundresistance,suchasthetransactionsofpropertyrights,landreplacement;publicservicesupplygap,ruraleducation,healthcare,pensionsandotherservicescannotmeetthedemandstilldifficultforpovertyalleviation,withemphasisonpovertyalleviationand191."Hard"isa"peasants,peasants.FourwatereffectsstilllacksC:固定的线圈和可动的线圈D:固定的线圈和可动的软磁铁片第4题:电路中任一个闭合电路都叫（）。A:简单回路B:复杂回路C:回路D:网孔
第5题:某段导线的电阻是R，若将此导线均匀拉长为原来的2倍，则导线的电阻变为（）。
A:RB:4RC:2RD:R/2
第6题:高压阀型避雷器中串联的火花间隙和阀片比低压阀型避雷器的（）。A:多B:少
C:一样多D:不一定多
第7题:电力电容器所在环境日平均最高温度不应超过(℃。A:35B:40C:45D:50
第8题:电功率的单位是（）。A:安培B:伏特C:欧姆D:瓦特
第9题:电功率的表达式为（）。A:P=WtB:P=UIC:P=U2/ID:P=U2I
第10题:环网柜内与压气式负荷开关串联安装着(A:高压断路器B:高压熔断器C:高压接触器D:高压隔离开关第11题:电容的容抗与（）。
A:电源频率、电容均成正比B:电源频率成正比、电容成反比C:电源频率、电容均成反比D:电源频率成反比、电容成正比第12题:三绕组变压器绕组由里向外排列顺序(。A:高压，中压，低压B:低压，中压，高压C:中压，低压，高压D:低压，高压，中压
第13题:电流固定时，电能表铝盘的转速与电压的(次方成正比。A:4B:3C:2D:1
第14题:采用金属槽配线时，强电电线或电缆的总截面不应超过槽内截面的(。
A:0.2B:0.3C:0.5D:1
第15题:不属于电阻并联电路的特点的是（）。
A:各电阻两端电压相等B:总电流等于各支路电流只和C：总电阻等于并联电阻只和D:各支路电流的分配与支路电阻的电阻成反比第16题:电感线圈对高频电流的阻力（）。A:为零B:很小C:很大D:无穷大
第17题:负荷开关必须与(串联安装。A:高压隔离开关B:高压断路器
compelling."Althoughthe"fivewatertreatment"alot,workveryhard,butthefloodofscientificenough,beforethetreatmentandwaterqualityimprovementafterthetreatmenteffectisnotobvious,county-widefocusonriverstilllargelyinferiorfivewater,swimmingtheRivercouldnotbefound.Fiveis"threetosplit"taskstillliesahead.Noticeofstockthere,newconstructiondidnotreceivetimelytreatmenteveryyear(suchasancestralhallasunauthorisedrepeated,contrarytothecreatedworkisverydifferentfromtheprovincialandmunicipalstandards.Meanwhile,whenimplementationisnotinplace,generallyonlyfocusonillegalconstructiondemolished,failingthatsplitthatisclear,combineddemolition,insufficientattentiontoreconstructionofoldresidentialareas,urbanvillages,shantytownsandpromotepoor.osolvetheseproblems,wemustenhancethesenseofresponsibilityandurgency,insistonproblem-oriented,totakestrongmeasures,effortstomakeupthe
"threeagriculture"and"fivewatertreatment","threetosplita"shortBoard,constructionofcomprehensivesafeguards,"SouthGateofXXbeautiful"goalofrealizing.II,andprecisionShipolicy,andmanpowerplayinggood"threeagricultural"workprotracted"threeagricultural"workisdoeconomicsocialdevelopmenttheworkofbased,countylevelsthesectortoaccordingto"basedagricultural,andandmanpowerrural,anddevelopmentfarmers"ofrequirements,insistedagriculturalruralbasedstatusnotshake,insistedhuinongkulakpolicynotweakened,insistedreforminnovationtestnotstop,effortscreatednewera"threeagricultural"worknewsituation.(Atomakeagriculturemore.Toestablishtheconceptofagriculturearoundthepeopledemand,andcomprehensivelypromotethesupplysideofagriculturestructuralreform,strivetoenhancethequalityandefficiencyofagricultureandcompetitiveness.Focusisondoingthefourarticles.Oneisthesteadyincreaseofgrainarticle.Alwaystightenthestringforfoodsecurity,"ricebag"catchinhand,toholdlandintheadjustmentofagriculturalplantingstructureinthe"redline."Acceleratingtheconstructionofgrainribbons,improvingagriculturalinfrastructure,enhancefoodproductioncapacity,improvethequalityofagriculturalproducts,effectively"steadyincreaseofgrain"andmaintain"tongue."Second,industryconvergencearticle.Enhancethelevelofconcentration,intensificationofagriculture,creatingproduction,processing,distribution,salesandserviceinoneoftheagriculturalindustrialchain,tobreakdownthevaluechain,improveaddedvalue.Pushingforward"theInternet+agricultural"modeltoimproveagriculturalproduction,management,andservicelevel,innovatingthemodeofe-commercemarketingofagriculturalproducts,solvethedifficultproblemofsalesofagriculturalproducts.Agricultureandtourism,education,culture,health,pensionandotherdeepintegration,developleisure,travel

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