发动机航线维护智慧树知到期末考试答案2024年

发动机航线维护智慧树知到期末考试答案2024年发动机航线维护TheVBVsystemofCFM56-3orCFM56-5Bengineisoperatedbyafuelgearmotor.()

A:正确B:错误答案:正确ThelubeunitpadonCFM56-3enginedoesn’tneedtousecarbonseal.()

A:正确B:错误答案:正确TheaccurateoilquantityinCFM56-3enginecanbegotfromthesightglassofoiltank.()

A:正确B:错误答案:错误No.1,No.2andNo.3bearingsonCFM56-3enginearerollerbearing.()

A:错误B:正确答案:错误ServofuelheateronCFM56-3enginecanincreasetheservofueltemperature.()

A:正确B:错误答案:正确ForCFM56-3engineandB737-300airplane,aRVDTinMECsensesthePLAandsendsanelectricalsignaltoPMC.()

A:错误B:正确答案:正确LVDTandelectricalcablewillfeedbackVSV’spositontotheEEConCFM56-3engine.()

A:正确B:错误答案:错误TheoiltankonCFM56-3engineisventedtotheambientairdirectly.()

A:错误B:正确答案:错误MEConCFM56-3enginecancontrolandscheduleLPTCC.()

A:正确B:错误答案:错误CFM56-7Bisahighbypass,threerotorturbojetengine.()

A:错误B:正确答案:错误TheAMMis().

A:AircraftMaintenanceManagementB:AirMinimumMassC:AircraftMaintenanceManualD:AircraftManagementManual答案:AircraftMaintenanceManualBeforetoperformVBVsystemmaintenance,().

A:VBVshouldbeinfullyclosepositionB:BothVBVandVSVshouldbeinfullyopenpositionC:BothVBVandVSVshouldbeinfullyclosepositionD:VBVshouldbeinfullyopenposition答案:VBVshouldbeinfullyclosepositionWhatisusedtotheCFM56-3MECtometerfuelpressuretotheHPTCCvalve?()

A:EGT.B:N2speed.C:T3.D:N1speed.答案:N2speed.WhatcanweseethroughtheS1borescopeinspectionportonCFM56-3enginewithborescopeprobe?()

A:theleadingedgeof1stHPCbladesB:theleadingedgeof1stHPCvanesC:thetrailingedgeof1stHPCvanesD:thetrailingedgeof1stHPCblades答案:theleadingedgeof1stHPCbladesHowmanyenginemountsdoestheCFM56-3have?()

A:3B:4C:1D:2答案:2CFM56-3enginesuppliesthrustfor().

A:A318/A319/A320/A321aircraftB:B737-700/800/900aircraftC:B737-300/400/500aircraftD:C919andARJ21答案:B737-300/400/500aircraftThedataplatehasNOTthedataof().

A:Enginemodelnumber.B:Engineserialnumber.C:Airframetype.D:Thrustratings.答案:AirframetypeWhilePs12decreases,therequiredN2speedofCFM56-3enginewill().

A:firstincreaseandthendecreaseB:decreaseC:increaseD:remainunchanged答案:increaseTheN2feedbackforMECisfrom().

A:MECdriveshaftattachedtofuelpumpB:N2alternatorC:NoneofaboveiscorrectD:N2speedsensor答案:MECdriveshaftattachedtofuelpumpWhichfuelflowpathinfuelnozzlesisopenduringCFM56-3enginestartandatlowpoweroperation?()

A:PrimaryorSecondaryflowpathB:SecondaryflowpathC:PrimaryandSecondaryflowpathD:Primaryflowpath答案:PrimaryflowpathTheinputparametersusedbyMECtolimittherateofthefuelflowduringengineaccelerationanddecelerationare().

A:T2.5,N2andCDPB:T2.5,N1andCBPC:T2.5,N2,CDPandCBPD:T2.5andN2答案:T2.5,N2,CDPandCBPWhichistrueaboutoilservicing?()

A:In5-30minutesaftertheengineshut-downB:In1houraftertheengineshut-downC:NotimelimitD:In5minutesaftertheengineshut-down答案:In5-30minutesaftertheengineshut-downTheHPTclearanceis().

A:TheclearancebetweenHPTrotorandHPTnozzleB:TheclearancebetweenHPTrotorandLPTnozzlestage1C:TheclearancebetweenHPTbladesandHPTcaseD:TheclearancebetweenHPTbladesandHPTshrouds答案:TheclearancebetweenHPTbladesandHPTshroudsBeforetoreinstalltheVBVfuelgearmotortotheengine,theVBVstopmechanismshouldbe().

A:FullyopenB:NoneoftheaboveC:ArbitraryD:Fullyclose答案:FullycloseWhatisthefunctionoftheVBVKickersystem?()

A:TomaketheVBVdoorsmoreopenathighspeedB:ToincreasetheVBVopeningatlowspeedC:Noneoftheaboveistrue.D:TodecreasetheVBVopeningatlowspeed答案:ToincreasetheVBVopeningatlowspeedThesignalofFuelFlowTransmitterwillbesentto().

A:theflightcompartmentforwarningoflowfuelflowrateB:theMECforN2speedcontrolC:theflightcompartmentforvisualindicationoffuelflowrateD:thePMCforN1speedcontrol答案:theflightcompartmentforvisualindicationoffuelflowratePrimaryairflowsuppliesapproximatelyoftheenginethrust.()

A:80%B:90%C:10%D:20%答案:20%WhatairsourceisusedtopressurizeforwardsumponCFM56engines?()

A:the5thbleedairfromHPCB:BoosterdischargeairC:CDPairD:Fandischargeair答案:BoosterdischargeairTheparametersusedbytheMECtoscheduleVSVare().

A:N2andT2.5B:N2andT2.0C:N1andN2D:T12andT2.5答案:N2andT2.5ThethrustrangeofCFM56-3engineis().

A:33Klbsto55Klbs.B:6.4Klbsto10.5Klbs.C:11Klbsto33Klbs.D:18.5Klbsto23.5Klbs.答案:18.5Klbsto23.5Klbs.WhichcomponentdoseCFM56-3engineusetotransferthethrustfromfanframetoaircraftstrut?()

A:FancaseB:TheforwardmountC:ThrustlinksD:Therearmount答案:ThrustlinksTheMCDsofoilsystemofCFM56-3arelocatedin().

A:theAGBB:theoilsupplycircuitC:theoilscavengecircuitD:theoiltank答案:theoilscavengecircuitBeforeinstallthefanblades,itshouldbe().

A:Applysomeoiltolubricatethefanbladeroot.B:Polishthecontactface.C:Lubricatethebladerootsbytheapplicationofsolidmolybdenum-baselubricant.D:Cleananddiscardtheanti-frictionplasmacoating(Cu-Ni-In).答案:Lubricatethebladerootsbytheapplicationofsolidmolybdenum-baselubricant.DuringthelinemaintenanceofCFM56-3engine,cannotbeseenwiththeborescopeinspectionequipment.().

A:ThecentralholeedgeoftheHPTdiscB:The4thstagebladesofHPCC:HPTBladesD:HPTNozzle答案:ThecentralholeedgeoftheHPTdiscWhatbearingsareballbearingonCFM56-3engine?()

A:No.1andNo.5B:No.2andNo.3C:No.1andNo.3D:No.2andNo.4答案:No.1andNo.3WhentheCFM56-3engineisrunningatidle,whereisthecoolingairfortheHPTCCfrom?()

A:CBPB:9thHPCC:5thHPCD:5th+9thHPC答案:9thHPCThefuellineidentifiedas“P6”ofCFM56-3enginecarriesfuelto().

A:Thecompressorinlettemperaturesensor(T2.5)B:ThefuelpumpC:Thefaninlettemperaturesensor(T2.0)D:Thehighpressureturbineclearancecontrolvalve答案:Thecompressorinlettemperaturesensor(T2.5)What’sthefunctionofN1speedsensorofCFM56-3?()

A:BothAandBB:TosupplyN1feedbacksignaltoMECC:TosupplyN1indicationtocockpitD:TosupplyN1feedbacksignaltoPMC答案:BothAandBWhichofthefollowingstatementaboutPMConCFM56-3engineiscorrect?()

A:BothAandBB:PMCisadigitalelectroniccontrolunitC:PMCgetsthesamePLAsignalasMECD:PMCisusedtocontrolN1speed答案:BothAandBHowmanyfanbladesdoesCFM56-3enginehave?()

A:18B:38C:36D:28答案:38EGTsensorsonCFM56engineare_____type.()

A:thermocoupletypeB:bimetallicstripC:bellowtypeD:resistivethermaldevices答案:thermocoupletypeWhichoneisTRUEinthefollowingdescriptionsabouttheservofuelpressure?()

A:Pc＞Pcr＞Pb＞PfB:Pcr＞Pc＞Pf＞PbC:Pf＞Pcr＞Pb＞PcD:Pf＞Pc＞Pcr＞Pb答案:Pf＞Pc＞Pcr＞PbTheairusedforCFM56-3HPTnozzlecoolingis().

A:HPC5thairB:CDPairC:HPC4thairD:Boosterdischargeair答案:CDPairWhichisNOTthepurposeoftheHMUoftheCFM56-7Bengine?()

A:Tocalculatethefuelflow.B:Totransfertheelectronicsignaltoservofuelpressure.C:TocontroltheengineaccordingtotheEECcommand.D:Toshutoffthefuelforcombustion.答案:Tocalculatethefuelflow.WhichfollowingstatementisNOTtrueaboutthetransportationofCFM56engine?()

A:Correcttransportationoftheengineisnecessarytopreventthedamagetothebearings.B:Thetie-downpointsoftheenginecanbeusedtoinstalltheenginestandonthetruck.C:Theenginecanbetransportedbytrain.D:Theenginecanbetransportedbytruckthathasapneumaticsuspension.答案:Theenginecanbetransportedbytrain.TheforwardvibrationsensorofCFM56-3engineislocatedon().

A:NO.2bearingsupportB:NO.3bearingC:NO.1bearingsupportD:Fanrearshaft答案:NO.1bearingsupportMECis().

A:anelectronicunitforN2controlB:ahydro-mechanicunitforN1controlC:anelectronicunitforN1controlD:ahydro-mechanicunitforN2control答案:AI参考:正确答案是：C:anelectronicunitforN1control。\n题目中的MEC应为机电系统或机电装置，结合后面的名词N1，可判断该选项应为“控制N1的电子装置”，所以