FDNY CYCLE 1 AND 2 Questions and Answers 2025

FDNY CYCLE 1 AND 2 Questions and
Answers 2025
Combustion-ACORRECTAANSWERSA-
Self-sustainingAprocessAofArapidAoxidationAofAaAfuel,AwhichAproducesAheatAandAlight
FireA-ACORRECTAANSWERSA-theAresultAofAaArapidAcombustionAreaction
FlammableAorAexplosiveAlimitsA-ACORRECTAANSWERSA-
%AofAaAsubstanceAinAtheAairAthatAwillAburnAonceAitAisAignited
FlashpointA-ACORRECTAANSWERSA-
TheAlowestAtemperatureAatAwhichAaAcombustibleAmaterialAwillAproduceAanAignitableAvapor.
AtAthisAtemperature,AigniteAwillAflashAbutAnotAcontinueAtoAburn
HeatA-ACORRECTAANSWERSA-FormAofAenergyAthatAraisesAtemperature
IgnitionAtemperatureA-ACORRECTAANSWERSA-
minimumAtemperatureAtoAwhichAaAfuelAinAtheAairAmustAbeAheatedAtoAstartAaAself-
sustainedAcombustionAwithoutAaAseparateAignitionAsource
ConductionA-ACORRECTAANSWERSA-
TheAdirectAtransferAofAheatAfromAoneAsubstanceAtoAanotherAsubstanceAthatAitAisAtouching.
ConvectionA-ACORRECTAANSWERSA-transferAofAheatAbyAtheAmovementAofAairAorAliquid
RadiationA-ACORRECTAANSWERSA-
heatAtravelingAthroughAspaceAuntilAitAreachesAanAopaqueAobject.
FireATetrahedronA-ACORRECTAANSWERSA-
Heat,AFuel,AOxygen,AChemicalAChainAReaction
FuelAcanAbeAfoundAinA-ACORRECTAANSWERSA-solids,AliquidsAandAgasses.
PyrolisisA-ACORRECTAANSWERSA-
ProcessAofAheatingAaAliquidAorAsolidAtoAtheApointAwhereAitAgivesAoffAgassesAcapableAofAcom
bustion
PhasesAofAfireA-ACORRECTAANSWERSA-Incipient,ASteady-
AState,ARollover,AFlashover,AHotAsmoldering,ABackdraft

incipientA-ACORRECTAANSWERSA-
earliestAphaseAofAaAfireAbeginningAwithAtheAactualAignition.
Steady-StateABurningAPhaseA-ACORRECTAANSWERSA-
PhaseAofAfireAwhereAthereAisAsufficientAoxygenAandAfuelAforAfireAgrowthAandAopenAburningAt
oAaApointAwhereAtotal
involvementAisApossible
Rollover(Flameover)A-ACORRECTAANSWERSA-
unburnedAcombustibleAgassesAreleasedAduringAtheAincipientAorAsteadyAstateAburningAphas
eAaccumulateAatAceilingAlevel
FlashoverA-ACORRECTAANSWERSA-
FlamesAflashAoverAtheAentireAsurfaceAofAaAroomAorAarea
HotAsmolderingAphaseA-ACORRECTAANSWERSA-ifAconfinementAisAsufficientlyAair-
tight.AAsAflamesAdieAdown,AtheAroom.AfillsAwithAdenseAsmokeAandAgas

, BackdraftA-ACORRECTAANSWERSA-
BurningAisAincompleteAbecauseAofAinsufficientAoxygenAtoAsustainAfire.AHeatAremains,AandAc
arbonAproductsAand
otherAgassesAareAavailableAforAinstantAcombustionAwhenAmoreAoxygenAisAsupplied
ThermalALayeringA-ACORRECTAANSWERSA-
TendencyAofAgassesAtoAformAintoAlayersAaccordingAtoAtemperature
FireAwillAalwaysAgoAfromA-ACORRECTAANSWERSA-HighAtoAlowAPressure
FourAProductsAofACombustionA-ACORRECTAANSWERSA-1.AHeat
2.ASmoke
3.AGases
4.ALightA(Flame)
FourAmethodsAofAfireAextinguishment.A-ACORRECTAANSWERSA-
Cooling,AFuelAremoval,AoxygenAreductionAandAChemicalAflameAinhibition
ClassesAofAFireA-ACORRECTAANSWERSA-"Classes
AA-Awood,Acloth,Apaper,ArubberAandAplastics
BA-AflammableAliquidAandAgases
CA-AfireAinvolvingAenergizedAelectricalAequipment
DA-AinvolvingAcombustibleAmetalsA(suchAasAmagnesium,Asodium,Apotassium)
CouplingAofAaADiameterA1A3/4AHose?A-ACORRECTAANSWERSA-1A1/2''
CouplingAofAaADiameterA2A1/2AHose?A-ACORRECTAANSWERSA-2A1/2''
CouplingAofAaADiameterA3A1/2AHose?A-ACORRECTAANSWERSA-3''
HowAmuchAoxygenANormalAAirAcontainsA-ACORRECTAANSWERSA-21%AOxygen
MostAfiresArequireAatAleastA-ACORRECTAANSWERSA-16%AOxygen
MaxApressureAofAaAAttackAlineA-ACORRECTAANSWERSA-250APSI
MaxApressureAofAaASupplyAlineA-ACORRECTAANSWERSA-250APSI
MaxApressureAofAaAStandpipeA-ACORRECTAANSWERSA-250APSI
ShutAoffAValesASizesA-ACORRECTAANSWERSA-1A½"andA2A½"
1A¾"AHoseLine(MSTAsize,AGPM,APSI,AFrictionAlost)A-ACORRECTAANSWERSA-
15/16AinchAMainAStreamATipA(MST)
180AGPMAofAwater
50APSIAatAtheAtipAofAnozzle
FrictionAlostA20APSIAperA50'Alength
2A½"AHoseALine(MSTAsize,AGPM,APSI,AFrictionAlost)A-ACORRECTAANSWERSA-
1A1/8AinchAMainAStreamTipA(MST)
225AtoA250AGPMAofAwater
40APSIAatAtheAtipAofAnozzle
FrictionAlostA5APSIAperA50'Alength
3A½"AHoseALineA-ACORRECTAANSWERSA-
GreatAflowAwithAlessAtoAnoneAfriction.ASupplyAstandpipeAandAsprinklerAsystems.
HowAmanyAlengthAshouldAbeAusedAinAaAhoseAstretchA-ACORRECTAANSWERSA-
6ALengthAmax
EngineAmustAcarryAnoAlessAthanA-ACORRECTAANSWERSA-
3AlengthsAofA2A½"AandAnoAlessAthenA3AlengthsAofA1A¾"
HoseAmustAbeAloadedA-ACORRECTAANSWERSA-LeftAtoAright
MaleAEndAofAaAhoseAalwaysAfacesA-ACORRECTAANSWERSA-TheAfire
TheA4AS'sA-ACORRECTAANSWERSA-Sex,ASize,ASolidAtoASolidAandASwivel