Period 2 Automotive Service
Technician Questions and
Answers Updated 2026
AnBinternalBcombustionBengineBconvertsBtheBpotentialBenergyBinBgasolineBinto:B-
BAnswerBmechanicalBenergyBandBwastedBheatBenergy
WhatBisBtheBcompressionBratioBofBanBengineBthatBhasBaBboreBofB89mm,BaBstrokeBof
B88mmBandBaBclearanceBvolumeBofB69.72cm3?B-BAnswerB8.85:1
TheBangleBinBaBVBinBtheBvariousBV-configuredBenginesBmayBbe:B-
BAnswerB90°,B60°BandB15°
ABfour-strokeBcycleBengineBcompletesBoneBfullBcycleBin:B-BAnswerB720°
StrokeBisBaBmeasurementBof:B-BAnswerBTheBtravelBofBtheBpistonBfromBTDCBtoBBDC
WhatBisBtheBtypicalBcompressionBratioBforBanBautomotiveBdieselBengine?B-
BAnswerB17:1
WhatBisBtheBmainBpurposeBofBaBturbochargerBorBaBsupercharger?B-
BAnswerBToBincreaseBtheBvolumetricBefficiencyBofBanBengine
TheBengineBcylinderBblockBformsBwhatBforBallBmajorBengineBcomponents?B-
BAnswerBABrigidBfoundationBandBmountingBpointsBforBaccessories.
WhatBisBtheBformulaBtoBcalculateBengineBdisplacement?B-
BAnswerBboreBxBboreBxBstrokeBxB0.7854BxBnumberBofBcylinders
WhatBisBtheBformulaBtoBcalculateBcompressionBratio?B-
BAnswerBClearanceBVolumeB+BSweptBVolume
, ---------------------------------------
BClearanceBVolume
WhatBareBtheBthreeBmethodsBforBcastingBaBcylinderBblock?B-
BAnswerBSandBCasting,BDieBCastingBandBLostBFoamBCasting
WhatBareBexpansionBplugsB(frostBplugs)BinBanBengineBblockBusedBfor?B-
BAnswerBToBsealBoffBopeningsBcreatedBduringBmanufactureBofBtheBcylinderBblock.
WhichBstyleBofBcylinderBblockBisBleastBexpensiveBtoBmanufacture?B-BAnswerBOne-
PieceBwithBintegralBcylinders
WhatBareBsomeBadvantagesBofBMulti-PieceBengineBblocks?B-
BAnswerBReducedBnoise,BvibrationBandBharshnessBasBwellBasBincreasedBbottomBendBr
igidity
WhatBisBtheBmostBcommonBcauseBforBrejectionBofBanBengineBblock?B-
BAnswerBCracking
AtBwhatBtemperatureBandBdurationBshouldByouBimmerseBaBcylinderBblockBbeforeBperf
ormingBpressureBtesting?B-BAnswerB93.3ºCB(200ºF)BforB15-20Bminutes
WhatBshouldBdeckBwarpageBnotBexceed?B-BAnswerB0.12mmB(0.004in)
HowBshouldBmachinedBsurfacesBonBaBcylinderBblockBbeBmeasuredBforBflatness?B-
BAnswerBUsingBaBstraightedgeBandBfeelerBblade
WhichBprecisionBmeasuringBtoolsBcanBbeBusedBtoBmeasureBboreBsize?B-
BAnswerBTelescopingBgaugeBandBoutsideBmicrometer,BinsideBmicrometerBorBdialBbore
Bgauge
Technician Questions and
Answers Updated 2026
AnBinternalBcombustionBengineBconvertsBtheBpotentialBenergyBinBgasolineBinto:B-
BAnswerBmechanicalBenergyBandBwastedBheatBenergy
WhatBisBtheBcompressionBratioBofBanBengineBthatBhasBaBboreBofB89mm,BaBstrokeBof
B88mmBandBaBclearanceBvolumeBofB69.72cm3?B-BAnswerB8.85:1
TheBangleBinBaBVBinBtheBvariousBV-configuredBenginesBmayBbe:B-
BAnswerB90°,B60°BandB15°
ABfour-strokeBcycleBengineBcompletesBoneBfullBcycleBin:B-BAnswerB720°
StrokeBisBaBmeasurementBof:B-BAnswerBTheBtravelBofBtheBpistonBfromBTDCBtoBBDC
WhatBisBtheBtypicalBcompressionBratioBforBanBautomotiveBdieselBengine?B-
BAnswerB17:1
WhatBisBtheBmainBpurposeBofBaBturbochargerBorBaBsupercharger?B-
BAnswerBToBincreaseBtheBvolumetricBefficiencyBofBanBengine
TheBengineBcylinderBblockBformsBwhatBforBallBmajorBengineBcomponents?B-
BAnswerBABrigidBfoundationBandBmountingBpointsBforBaccessories.
WhatBisBtheBformulaBtoBcalculateBengineBdisplacement?B-
BAnswerBboreBxBboreBxBstrokeBxB0.7854BxBnumberBofBcylinders
WhatBisBtheBformulaBtoBcalculateBcompressionBratio?B-
BAnswerBClearanceBVolumeB+BSweptBVolume
, ---------------------------------------
BClearanceBVolume
WhatBareBtheBthreeBmethodsBforBcastingBaBcylinderBblock?B-
BAnswerBSandBCasting,BDieBCastingBandBLostBFoamBCasting
WhatBareBexpansionBplugsB(frostBplugs)BinBanBengineBblockBusedBfor?B-
BAnswerBToBsealBoffBopeningsBcreatedBduringBmanufactureBofBtheBcylinderBblock.
WhichBstyleBofBcylinderBblockBisBleastBexpensiveBtoBmanufacture?B-BAnswerBOne-
PieceBwithBintegralBcylinders
WhatBareBsomeBadvantagesBofBMulti-PieceBengineBblocks?B-
BAnswerBReducedBnoise,BvibrationBandBharshnessBasBwellBasBincreasedBbottomBendBr
igidity
WhatBisBtheBmostBcommonBcauseBforBrejectionBofBanBengineBblock?B-
BAnswerBCracking
AtBwhatBtemperatureBandBdurationBshouldByouBimmerseBaBcylinderBblockBbeforeBperf
ormingBpressureBtesting?B-BAnswerB93.3ºCB(200ºF)BforB15-20Bminutes
WhatBshouldBdeckBwarpageBnotBexceed?B-BAnswerB0.12mmB(0.004in)
HowBshouldBmachinedBsurfacesBonBaBcylinderBblockBbeBmeasuredBforBflatness?B-
BAnswerBUsingBaBstraightedgeBandBfeelerBblade
WhichBprecisionBmeasuringBtoolsBcanBbeBusedBtoBmeasureBboreBsize?B-
BAnswerBTelescopingBgaugeBandBoutsideBmicrometer,BinsideBmicrometerBorBdialBbore
Bgauge