ASVAB Auto and Shop information Questions with Answers 2025

ASVAB Auto and Shop information
Questions with Answers 2025
MixtureAofAGasAandAAir
(theAfuelAmixture)A-AcorrectAanswers-WhatAdoesAtheAInternalACombustionAengineAburn?
1.AIntake
2.ACompression
3.APower
4.AExhaustA-AcorrectAanswers-WhatAareAtheA4AstrokesAthatAmakeAupAaAcycle?
(inAcarAengine)
IntakeA-AcorrectAanswers-
ThisAvalveAopensAasAtheAconnectingArodApullsAtheApistonAdown,AdrawingAtheAgas/airAmixAin
toAtheAcylinder
CompressionA-AcorrectAanswers-
TheAvalvesAareAclosed.ATheAconnectingArodApushesAtheApistonAup,AcompressingAgas/airAm
ix
PowerA-AcorrectAanswers-
TheAsparAplugAignitesAtheAgas/airAmix,AforcingAtheApistonAdown.AThatApushesAdownAonAtheA
connectingArod,AturningAtheAcrankshaft;AtheAcrankshaftAturnsAtheAflywheel,AwhichAkeepsAth
eAengineAgoing
ExhaustA-AcorrectAanswers-
TheA___AvalveAopensAasAtheAconnectingArodAmovesAtheApistonAbackAup,ApushingAoutAtheAe
xplodedAgases.ATheAvalvesAareAtimes,AofAcourse,AusingApusArodsAattachedAtoAtheAcamshaf
t.
InlineA-AcorrectAanswers-TheAnameAforAcylindersAthatAareAarrangedAinAoneArow
VA-AcorrectAanswers-TheAnameAforAcylindersAthatAareAarrangedAinAtwoArows
Four-stroke,Aone-cycleAengineA-AcorrectAanswers-MostApeopleAreferAtoAenginesAasAfour-
cycleAenginesAbutAthisAisAfalse;AwhatAareAtheyAreallyAcalled?
TachometerA-AcorrectAanswers-
InstrumentAinAaAvehicleAtheAmeasuresArevolutionsAperAminute;Arpm
(e.g.AwhenAthisAdisplaysA4,800Arpm,AthatAmeansAtheAengineAisAperformingA4,800AcyclesAev
eryAminute)
FuelAmustAbeAproperlyAmixedAwithAairAandAtransportedAwithinAtheAcylinderAatAtheAproperAti
meA-AcorrectAanswers-WhatAmustAhappenAinAorderAforAtheAcycleAtoAhappenAatAall?
CarburetorsA-AcorrectAanswers-
___AareAusedA(preA1990)AtoAmixAtheAfuelAandAairAmechanically.AAsAairAmovesAquicklyAthrou
ghAthis,AitAcreatesAaAvacuum,AwhichAdrawsAmoreAandAmoreAfuelAintoAtheAmixture
FuelAInjectorsA-AcorrectAanswers-
___AhaveAreplacedAcarburetorsAonAnewerAcarsAtoAperformAtheAair/fuelAmixtureAfunction.
FuelAInjectorA-AcorrectAanswers-TheA___AactsAasAtheAfuel-
dispensingAnozzle.AItAinjectsAliquidAfuelAdirectlyAinAtoAtheAengine'sAairAstream.
(InAalmostAallAcasesAitArequiresAanAexternalApump)
ElectronicAFuelAInjectionAcomputerA-AcorrectAanswers-EFIAcomputerAstandsAforA___?

, DeterminesAtheAamountAofAfuelAenteringAtheAengine:AreceivesAinformationAfromAtheAsensor
sAinAtheAfuel,Aair,AandAexhaustAsystem,AandAfromAthatAinformation,AitAdeterminesAhowAmuc
hAfuelAtheAengineAneedsAtoAoperateAatAoptimumAlevelsA-AcorrectAanswers-
WhatAdoesAtheAEFIAcomputerAdo?
ThrottleA-AcorrectAanswers-___AisAmechanicallyAconnectedAtoAtheAcarburetorA
OR
___AisAelectronicallyAconnectedAtoAtheAEFIAcomputer
AdvancingA(opening)AtheAthrottleAcausesAmoreAfuelAtoAbeAtransferredAtoAtheAcarburetorAorA
theAfuelAinjectors.ATheAacceleratorA(gasApedal)AisAconnectedAtoAtheAthrottleAbyAmechanical
Alinkages.ATheAharderAyouApushAonAtheAgasApedal,AtheAfartherAtheAthrottleAisAadvancedA(op

ened).AThus,AmoreAfuelAisAtransportedAtoAtheAcarburetorAorAfuelAinjectors.A-
AcorrectAanswers-WhatAdoesAaAThrottleAdo?

CoolingAsystemA-AcorrectAanswers-
WhatAdoesAtheAengineAhaveAbecauseAofAtheAhighAtemperatureAatAwhichAfuelAburns?
WaterAJackets
WaterAPump
RadiatorA-AcorrectAanswers-WhatAareAtheA3AcomponentsAofAtheAengine'sAcoolingAsystem?
WaterAjacketsA-AcorrectAanswers-
TheseAsurroundAtheApartsAofAtheAengineAthatAreachAtheAhighestAtemperatures
(engineAcoolingAsystem)
WaterAPumpA-AcorrectAanswers-ThisAcirculatesAwaterAthroughAtheAwaterAjackets
(engineAcoolingAsystem)
RadiatorA-AcorrectAanswers-(engineAcoolingAsystem)
WhileAtheAwaterAcirculates,AitAabsorbsAheatAfromAtheAengineAandAthenApassesAthroughAtheA
___,AwhereAoutsideAairAcoolsAtheAwater.
AntifreezeA-AcorrectAanswers-
___A(aAcoolant)AraisesAtheAboilingApointAofAwaterA(whichAkeepsAwaterAfromAboilingAaway)Aa
ndAlowersAitsAfreezingApointA(whichAkeepsAtheAsystemAfromAfreezingAupAduringAcoldAweath
er)
AntifreezeA-AcorrectAanswers-
___AisAusuallyAmixedAwithAtheAwaterAinAanAengineAcoolingAsystem
OilAPumpA-AcorrectAanswers-
AA___AcirculatesAoilAthroughAtheAengine;AoilAflowsAthroughAtheAcrankshaftAandAconnectingA
rods,AlubricatingAitAasAitAgoes.
FrictionA&AHeatA-AcorrectAanswers-
LubricationA(fromAtheAoilApump)AreducesA___,AwhichAinAturnAreducesA___.
StarterA-AcorrectAanswers-
AnAelectricAmotorApoweredAbyAtheAbatteryAthatAstartsAtheAengineAwhenAyouAturnAtheAkey
AlternatorA-AcorrectAanswers-
ThisAsendsAanAelectricAcurrentAbackAtoAtheAbatteryAtoAkeepAtheAbatteryAchargedAandAalsoAp
owersAtheAotherAelectronicAgadgetsAonAyourAcarAwhenAtheAengineAisArunning
IgnitionAsystemA-AcorrectAanswers-ThisAsuppliesAaAhigh-
voltageAcurrentAtoAtheAsparkAplugsAtoAigniteAtheAfuelAmixtureAinAtheAcylinders
IgnitionAsystemA-AcorrectAanswers-TheA___AsystemAtakesAtheA12-
voltAcurrentAfromAtheAbattery,AstepsAitAupAtoAaboutA20,000Avolts,AandAthenAsendsAtheAcurre
ntAtoAtheAsparkAplugs