发动机航线维护智慧树知到答案章节测试2023年中国民用航空飞行学院

第一章测试ThedescriptioninChapter73ofAMMisabout().

A:EngineFuelandControlSystem

B:AirSystem

C:ExhaustSystem

D:OilSystem

答案:AHowmanyenginemountsdoestheCFM56-3have?（）。

A:2

B:1

C:3

D:4

答案:ACFM56-3isa_______turbofanengine.()

A:Lowbypass,dualrotor

B:Highbypass,dualrotor

C:Highbypass,threerotor

D:Lowbypass,threerotor

答案:BThedataplatehasNOTthedataof（）。

A:Airframetype

B:TCNumber

C:Enginemodelnumber

D:Thrustratings

答案:ATheCFM56-3enginesupplies____fortheBoeing737-300/-400/-500aircraft.()

A:thrust,bleedair,hydraulic,pneumatic

B:thrust,electric,hydraulic,fuelandoil

C:thrust,electric,hydraulic,pneumatic

D:thrust,liftforce,hydraulic,pneumatic

答案:C第二章测试WhichcomponentonCFM56-3engineproducesthemostthrust?()

A:Exhaustnozzle

B:Fan

C:Combustor

D:Turbine

答案:BTheaerodynamicstationof12onCFM56-3engineis().

A:Theinletofbooster

B:Theprimaryairinlet

C:Thesecondaryairinlet

D:Theengineinlet

答案:CWhichbearingcanholdtheaxiallyloadoftheN2rotor?()

A:No.1ballbearing

B:No.2ballbearing

C:No.3ballbearing

D:No.4rollerbearing

答案:CWhatbearingsonCFM56-3enginearerollerbearing?()

A:No.2,No.4andNo.5bearings

B:No.3,No.4andNo.5bearings

C:No.1,No.2andNo.3bearings

D:No.2,No.3andNo.4bearings

答案:AThepowersourcefordrivingfanandboosterrotorisfrom().

A:CSDassembly

B:Air-drivinggearbox

C:LPT

D:HPT

答案:CTheairusedforCFM56-3HPTbladescoolingis().

A:HPC4thair

B:CDPair

C:Boosterdischargeair

D:HPC5thair

答案:BHowmanyfanbladesdoesCFM56-7Benginehave?()

A:36

B:38

C:18

D:24

答案:DWhichbalancingscrewfortherebalanceofCFM56-3engineisthelightest?()

A:P01

B:P06

C:P08

D:P07

答案:DInthefollowingaccessorypadsonCFM56-3engine,whichoneneedtousecarbonseal?()

A:Lubeunitandhydraulicpump

B:Airstarterandhydraulicpump

C:Controlalternatorandfuelpump

D:Lubeunitandfuelpump

答案:BHowmanystagesofLPTdoesCFM56-3enginehave?()

A:1

B:2

C:3

D:4

答案:D第三章测试Inthefollowingdescriptions,whichoneisNOTthefunctionofMEConCFM56-3engine?()

A:SchedulestheLPTCCvalve

B:Schedulesfuelflow

C:SchedulesVSV’sandVBV’spositions

D:SchedulestheHPTCCvalve

答案:AWhat’sthemainpurposeoftheservofuelheateronCFM56-3engine?()

A:Todecreasethesupplyoiltemperature

B:Todecreasethescavengeoiltemperature

C:Toincreasetheservofueltemperature

D:Toincreasethecombustionfueltemperature

答案:CInthefollowingfuelnozzlesonCFM56-3engine,whichonemusthavearicherprimaryflowpath?()

A:fuelnozzlepositions1and2

B:fuelnozzlepositions1and20

C:fuelnozzlepositions4and5

D:fuelnozzlepositions14and15

答案:DWhat’stheFail-SafesettingofT2.5sensoronCFM56-3engine?()

A:59℉/15℃

B:36℉/0℃

C:14.7PSI/15℃

D:760mmHg/15℃

答案:ATheCFM56-3enginesymptomsforaT2.5coldshiftare().

A:PossibleN1overshoot/bloomontakeoff

B:PossiblycannotgettakeoffpowerwithhighN2andEGT

C:VSVtrackclosedVBVtrackopen

D:Slowstartsandaccelerations

答案:AT2.0sensoronCFM56-3enginesuppliesfuelpressure_________totheMECinproportiontotheFIT.()

A:P6-Pb

B:P7-Pb

C:Pc-Pb

D:P7-P6

答案:BWhichofthefollowingsignalsgoesintoPMCthroughtheJ2connector?()

A:PS12

B:N1andT12

C:Electricalpowerfromcontrolalternator

D:Groundsupportequipment

答案:CHowmanythrottlepositionsdoesB737-300aircrafthavewhenCFM56-3engineisatidlespeed?()

A:Four

B:Onlyone

C:Three

D:Two

答案:BHowthePMCofCFM56-3engineknowsthethrustleverangle?()

A:aRVDTinMECsensesthePLAandsendsanelectricalsignaltoPMC

B:aRVDTincockpitsensesthePLAandsendsanelectricalsignaldirectlytoPMC

C:aLVDTincockpitsensesthePLAandsendsanelectricalsignaldirectlytoPMC

D:N2controlalternatorontheAGBsendsanelectricalpowertoPMC

答案:AWhatequipmentcantransfertheelectricalsignalfromPMCintoservofuelsignalinMECofCFM56-3engine?()

A:ApilotvalveinMEC

B:AtorquemotoronMEC

C:AnEHSVonMEC

D:SixEHSVsonHMU

答案:B第四章测试HowmanyigniterplugsdoesCFM56-3enginehave?()

A:2

B:4

C:5

D:3

答案:ATheCONTpositionsuppliescontinuouspowertotheignitionexcitersduring().

A:enginestartontheground

B:flight

C:enginerestartintheflight

D:aircraftontheground

答案:BWhichoneisTRUEinthefollowingdescriptionsabouttheignitionsystemofCFM56-3engine?()

A:TheLow-energyexciteroutputis1sparkpersecond,1joulesperspark.

B:Onlyneedonegasketcontrolsthedepththeigniterplugsgointothecombustionchamber.

C:Donotapplygreasetothethreadsontheignitionleadendoftheigniterplug.

D:Thereisnoneedtoprovidecoolingairaroundtheignitionleadstodecreasetemperature

答案:COnCFM56-3engine,high-energyexciteroutputis().

A:1sparkspersecond,1joulesperspark

B:1sparkspersecond,2joulesperspark

C:2sparkspersecond,2joulesperspark

D:2sparkspersecond,1joulesperspark

答案:CWhataretheinputoftheignitionexcitersoftheCFM56-3?

A:

14－20KVinput.

B:28VDC.

C:

115VACinput.

D:230VACinput.

答案:C第五章测试HowmanyVSVactuatorsdoesCFM56-3have?()

A:2

B:1

C:10

D:20

答案:AWhat’sthefeedbackequipmentofVSVandVBV’spositiontotheMECofCFM56-3engine?()

A:Arm,leverandflexibleshaft

B:Resolverandflexiblecable

C:RVDTandelectricalcable

D:LVDTandelectricalcable

答案:AWhenCFM56-3engineisstartingoratidlespeedcondition,theVBVdoorsis().

A:closed

B:atanypositon

C:opened

D:halfopened

答案:CTheVBVsystemofCFM56-3engineisoperatedby().

A:theoilscavengepump

B:thefuelgearmotor

C:thehydraulicpump

D:twofuelactuators

答案:BWhentheCFM56-3engineisrunningatCRUISE,whereisthecoolingairfortheHPTCCfrom?()

A:9thHPC

B:CBP

C:5thHPC

D:5th+9thHPC

答案:C第六章测试TherearvibrationsensorofCFM56-3engineislocatedon().

A:NO.2bearingsupport

B:the3o’clockpositionoffanframe

C:the12o’clockpositionofturbineframe

D:NO.1bearingsupport

答案:CWhichspeedsignalsofCFM56-3enginedoesAVMsystemneed?()

A:N1

B:N2

C:AVMsystemdoesn’tneedspeedsignals

D:N1andN2

答案:DTheEGTindicatingsystemsuppliestheflightcompartmentwiththeEGTasthegasflowsthroughthestage2LPTnozzle.()

A:lowest

B:true

C:highest

D:average

答案:DHowmanythermocouplesdoestheEGTindicatingsystemofCFM56-3enginehave?()

A:9

B:8

C:10

D:11

答案:AWhichvibrationsignalwillbesenttotheflightcompartmentforeachengineonB737-300aircraft?()

A:thelowestvibrationsignal

B:thefan’svibrationsignal

C:thestrongestvibrationsignal

D:thecore’svibrationsignal

答案:C第七章测试InthefollowingdescriptionsabouttheoilsystemofCFM56-3engine,whichoneisTRUE?()

A:TheoilsumpsareDry-Sumpdesigned

B:Theoiltankisventedtotheambientairdirectly

C:Noneoftheabove

D:Theoilquantitycanbegotfromthesightglassoftheoiltank

答案:AWhatairsourceisusedtopressurizerearsumpinCFM56engines?()

A:CBPair

B:the5thbleedairfromHPC

C:Boosterdischargeair

D:Fandischargeair

答案:CTheoilcoolerofoilsystemonCFM56-3enginearelocatedin().

A:theoiltank

B:theAGB

C:theoilscavengecircuit

D:theoilsupplycircuit

答案:CHowmanyoilpumpsdoe