FAA-机务基础执照题2

06/25/2009Bank:(AviationMechanicPowerplant)AirmanKnowledgeTestQuestionBankTheFAAcomputer-assistedtestingsystemissupportedbyaseriesofsupplementpublications.Thesepublications,availablethroughseveralaviationpublishers,includethegraphics,legends,andmapsthatareneededtosuccessfullyrespondtocertaintestitems.UsethefollowingURLtodownloadacompletelistofassociatedsupplementbooks::(allotherfactorsremainingconstant)?A)Amixtureleanerthanarichbestpowermixtureof.085.B)Amixturericherthanafullrichmixtureof.087.C)Amixtureleanerthanamanualleanmixtureof.060.2.AMP008AMPAcharacteristicofdynafocalenginemountsasappliedtoaircraftreciprocatingenginesisthattheA)shockmountseliminatethetorsionalflexingofthepowerplant.B)engineattachestotheshockmountsattheengine'scenterofgravity.C)shockmountspointtowardtheengine'scenterofgravity.3.AMP057AMPWhatisthepurposeofapowercheckonareciprocatingengine?A)Tocheckmagnetodrop.B)Todeterminesatisfactoryperformance.C)Todetermineifthefuel/airmixtureisadequate.4.AMP056AMPThehorsepowerdevelopedinthecylindersofareciprocatingengineisknownastheA)shafthorsepower.B)indicatedhorsepower.C)brakehorsepower.5.AMP056AMPEngineoperatingflexibilityistheabilityoftheenginetoA)delivermaximumhorsepowerataspecificaltitude.B)meetexactingrequirementsofefficiencyandlowweightperhorsepowerratio.C)runsmoothlyandgivethedesiredperformanceatallspeeds.6.AMP056AMPIftheoilpressureofacoldengineishigherthanatnormaloperatingtemperatures,theA)oilsystemreliefvalveshouldbereadjusted.B)engine'slubricationsystemisprobablyoperatingnormally.C)oildilutionsystemshouldbeturnedonimmediately.7.AMP056AMPEnginecrankshaftrunoutisusuallychecked1.duringengineoverhaul.2.duringannualinspection.3.aftera'propstrike'orsuddenenginestoppage.4.during100-hourinspection.A)1,3,and4.B)1and3.C)1,2and3.8.AMP057AMPAnenginemissesinboththerightandleftpositionsofthemagnetoswitch.ThequickestmethodforlocatingthetroubleistoA)checkforoneormorecoldcylinders.B)performacompressioncheck.C)checkeachsparkplug.9.AMP056AMPIfanenginecylinderistoberemoved,atwhatpositioninthecylindershouldthepistonbe?A)Bottomdeadcenter.B)Topdeadcenter.C)Halfwaybetweentopandbottomdeadcenter.10.AMP063AMPIftheignitionswitchismovedfromBOTHtoeitherLEFTorRIGHTduringanenginegroundcheck,normaloperationisusuallyindicatedbyaA)largedropinRPM.B)momentaryinterruptionofbothignitionsystems.C)slightdropinRPM.11.AMP031AMPIftheoilpressuregaugefluctuatesoverawiderangefromzerotonormaloperatingpressure,themostlikelycauseisA)lowoilsupply.B)brokenorweakpressurereliefvalvespring.C)airlockinthescavengepumpintake.12.AMP056AMPAftersparkplugsfromanopposedenginehavebeenserviced,inwhatpositionshouldtheybereinstalled?A)Nextinfiringordertotheonefromwhichtheywereremoved.B)Swappedbottomtotop.C)Nextinfiringordertotheonefromwhichtheywereremovedandswappedbottomtotop.13.AMP056AMPWhatdoesvalveoverlappromote?A)Lowerintakemanifoldpressureandtemperatures.B)Abackflowofgasesacrossthecylinder.C)Betterscavengingandcoolingcharacteristics.14.AMP056AMPWhendoesvalveoverlapoccurintheoperationofanaircraftreciprocatingengine?A)Attheendoftheexhauststrokeandthebeginningoftheintakestroke.B)Attheendofthepowerstrokeandthebeginningoftheexhauststroke.C)Attheendofthecompressionstrokeandthebeginningofthepowerstroke.15.AMP056AMPWhatisthebestindicationofwornvalveguides?A)Highoilconsumption.B)Lowcompression.C)Lowoilpressure.16.AMP056AMPWhichstatementistrueregardingbearingsusedinhighpoweredreciprocatingaircraftengines?A)Theouterraceofasinglerow,selfaligningballbearingwillalwayshavearadiusequaltotheradiusoftheballs.B)Thereislessrollingfrictionwhenballbearingsareusedthanwhenrollerbearingsareemployed.C)Crankshaftbearingsaregenerallyoftheball-typeduetotheirabilitytowithstandextremeloadswithoutoverheating.17.AMP056AMPWhichofthefollowingisacharacteristicofathrustbearingusedinmostradialengines?A)Taperedroller.B)Doublerowball.C)Deepgrooveball.18.AMP056AMPWhichconditionwouldbetheleastlikelytobecausedbyfailedorfailingenginebearings?A)Excessiveoilconsumption.B)Highoiltemperatures.C)Lowoiltemperatures.19.AMP053AMPWhatistheprincipaladvantageofusingpropellerreductiongears?A)ToenablethepropellerRPMtobeincreasedwithoutanaccompanyingincreaseinengineRPM.B)ToenabletheengineRPMtobeincreasedwithanaccompanyingincreaseinpowerandallowthepropellertoremainatalower,moreefficientRPM.C)ToenabletheengineRPMtobeincreasedwithanaccompanyingincreaseinpropellerRPM.20.AMP056AMPThefiveeventsofafourstrokecycleengineintheorderoftheiroccurrenceareA)intake,ignition,compression,power,exhaust.B)intake,power,compression,ignition,exhaust.C)intake,compression,ignition,power,exhaust.21.AMP057AMPWhichofthefollowingengineservicingoperationsgenerallyrequiresenginep