A&P - Powerplant Oral (Jeppesen) Actual Exam All Questions And Well Elaborated Answers Top Rated Version For Already A+ Graded Highly Recommended |New And Revised

A&P - Powerplant Oral (Jeppesen)
Actual Exam All Questions And Well
Elaborated Answers Top Rated
Version For Already A+ Graded Highly
Recommended |New And Revised
1. Whatmismthempurposemofmdynamicmdampersmonmcrankshafts?m-
mCORRECTmANSWERmTheymreducemenginemvibration.




2. Whatmtypesmofmbearingsmaremgenerallymfoundminmreciprocatingmengines?m-
mCORRECTmANSWERmPlain,mballmandmrollermbearings.




3. Aremthemconnectingmrodsmusedminmeachmcylindermofmamradialmenginemthemsame?mExplain.m-
mCORRECTmANSWERmNo.mRadialmenginesmusemmastermandmarticulatingmrodmassemblies.




4. Namemthemdifferentmtypesmofmpistonmrings.m-
mCORRECTmANSWERmOilmcontrol,mcompression,mandmoilmscraper.




5. Wheremshouldmpistonmringmgapsmbeminstalledmrelativemtomeachmother,mandmwhy?m-
mCORRECTmANSWERmCompressionmringmgapsmshouldmbemstaggeredmsomthatmtheymdomnotma


lign.mThismpreventsmexcessivemblow-by.



6. Whatmcouldmresultmfrommincorrectlyminstalledmpistonmrings?m-
mCORRECTmANSWERmExcessivemoilmconsumption.




7. Whatmpurposemdomoilmcontrolmringsmserve?m-
mCORRECTmANSWERmTheymregulatemthemthicknessmofmthemoilmfilmmonmthemcylindermwalls.

,8. Whatmismusedmtomhelpmpreventmvalvemsurgemormfloatingminmanmaircraftmengine?m-
mCORRECTmANSWERmTwomormmoremspringsmaremusedmonmeachmvalve.




9. Onmenginesmequippedmwithmhydraulicmvalvemlifters,mwhatmshouldmthemrunningmvalvemclear
ancembe?m-mCORRECTmANSWERmZero.



10. Whatmismthempurposemofmvalvemoverlap?m-
mCORRECTmANSWERmItmallowsmbettermvolumetricmefficiencymandmlowersmcylindermoperatin


gmtemperatures



11. Whatmindicationsmaremgivenminmthemeventmofmamleakingmormopenmprimermwhilemthemengine
mismrunning?m-mCORRECTmANSWERmThemenginemwillmnotmidlemproperly.




12. Amcoldmcylindermismfoundmwhenmtroubleshootingmamrunningmengine.mWhatmdoesmthismindic
ate?m-mCORRECTmANSWERmNomcombustionminmthatmcylinder.



13. Whenmpullingmampropellermthrough,mamhissingmsoundmismheard,mindicatingmvalvemblow-
by.mWhatmproceduremshouldmbemperformedmnext?m-
mCORRECTmANSWERmAmcompressionmcheckmshouldmbemperformedmtomidentifymthemfaultym


cylinder.



14. Whatmismthempurposemofmperformingmamcompressionmtest?m-
mCORRECTmANSWERmTomdeterminemifmthemvalves,mpistons,mandmringsmaremsealingmproperly




15. Whenmanmenginemismoverhauled,mhowmismthemtotalmtimemaffected?mWhenmanmenginemismre
built,mhowmismitsmoperatingmhistorymaffected?m-
mCORRECTmANSWERmThemtotalmtimemonmthemenginemmustmbemcontinuedmandmthemtimemsin


cemmajormoverhaulmismenteredmintomthemenginemlog.mItmthemmanufacturermrebuildsmthemen
gine,mitmismgrantedmamzero-
timemstatusmandmismconsideredmtomhavemnompreviousmoperatingmhistory.

,16. Whatminspectionsmshouldmbemperformedmaftermampropellermstrikemwithoutmsuddenmstoppa
ge?m-
mCORRECTmANSWERm1.Inspectmenginemmounts,mthemcrankcase,mandmthemnosemsectionmfor


mdamage.m


17. 2.Inspectmthemoilmandmoilmfilters/screensmformmetalmparticles.m
18. 3.Inspectmthemcrankshaftmormdriveshaftmformcracksmandmmisalignment.



19. Namemsomemofmthemprecautionsmthatmshouldmbemperformedmpriormtomenginemremoval.m-
mCORRECTmANSWERmDisconnectmthembattery,mturnmoffmthemfuelmvalves,mchockmthemwheels


,mandmifmnecessary,minstallmamtailmstand.



20. Whenminspectingmampiston,mwheremaremcracksmmostmlikelymtombemfound?m-
mCORRECTmANSWERmInmthosemareasmthatmaremhighlymstressed;musuallymthembasemofmthempi


stonmbosses,minsidematmthemjunctionmofmthemboremandmthemwalls,mandmthemringmlands.



21. Whatmdoesmitmmeanmifmanmenginempartmismwithinm"serviceablemlimits"?m-
mCORRECTmANSWERmItmmeansmthatmthempartmismwithinmthemmanufacturer'smlimitsmandmca


nmbemusedminmanmenginem(doesmnotmrequiremreplacement).



22. Whatmtoolsmorminstrumentsmaremusedmtominspectmamcylindermbarrelmformout-of-
roundness?m-
mCORRECTmANSWERmAmdialmindicatormormanminsidemmicrometermismusuallymusedmtommeasu


remthemtopmofmthemcylindermandmatmthemskirt.mAmtelescopicmgaugemandmmicrometermcanmals
ombemused.mTwomreadingsmshouldmbemtakenm90#mtomeachmother.



23. Howmcanmamloosemstudminmanmenginemcrankcasembemrepaired?m-
mCORRECTmANSWERmRemovemthemloosemstudmandminspectmthemholemformsizemandmthreadmc


ondition.mItmmaymbemnecessarymtomusemanmoversizemstudmormHeli-Coil.



24. Whatmpublicationmismusedmtomcheckmanmenginemformnormalmoperation?m-
mCORRECTmANSWERmManufacturer'smmaintenancemmanual.

, 25. Amweakmcylindermismfoundmduringmamcompressionmcheck.mWhatmmustmbeminspected?m-
mCORRECTmANSWERmTheminsidemofmthemcylinder.




26. Whatmpurposemdoesmanmoilmanalysismserve?m-
mCORRECTmANSWERmMetalmparticlesminmthemoilmshowmnormalmandmabnormalmwearmofmthe


mengine.mThismhelpsminmevaluatingmthemengine'sminternalmcondition.




27. Whatminspectionsmshouldmbemperformedmonmanmenginemthatmhasmbeenminmstorage?m-
mCORRECTmANSWERmPerformmanminspectionmtomdeterminemifmtheremismanymcorrosionmdam


age.



28. Wheremwouldmamcarburetormairmtemperaturembulbmbemlocated?m-
mCORRECTmANSWERmInmthemrammairmintakemduct.




29. Whatmismthemfuelmpressuremrangemonmfloat-typemcarburetors?m-
mCORRECTmANSWERm3mtom5mpsi.




30. Wheremismthemfuelmflowmindicatingmsystemmgenerallymconnectedmwithinmamcarburetedmreci
procatingmengine?m-
mCORRECTmANSWERmBetweenmthemenginemfuelmpumpmandmthemindicator.




31. Namemthembasicmcomponentsmofmamfuelmflowmsystem.m-
mCORRECTmANSWERmThemtransmittermandmthemindicator.




32. Whatmunitmofmmeasuremismgenerallymusedmtomindicatemfuelmflow?m-
mCORRECTmANSWERmPoundsmormgallonsmpermhour.




33. Whymismfuelmflowmmonitored?m-
mCORRECTmANSWERmTomdeterminemfuelmconsumptionmandmenginemperformance.