FDNY Z51 TEST EXAM ,Z51 WRITTEN TEST TAURIS AN
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D A STUDY GUIDE EXAM 2024 VERSION 200
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QUESTIONS WITH DETAILED VERIFIED ANSWERS AN
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D RATIONALES /A+ GRADE ASSURED
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Ingagsteamgturbine,gwhatgisgthegfunctiongofgagKingsburygthrustgbearing?
A) Maintaingfirstgstagegsteamgpressure.
B) Compensategforgcouplinggmisalignment.
C) Adjustgshaftgtorquegatgstartgup.
D) Maintaingaxialgpositioninggofgthegrotorgshaft.g-gCORRECTgANSWER-
D)gMaintaingaxialgpositioninggofgthegrotorgshaft.
Hotgworkgauthorizationsgaregissuedgby
A) agResponsiblegPersongdesignatedgbygthegBuildinggOwner.
B) agBuildinggDepartmentginspector.
C) agFDNYginspector.
D) thegBuildinggowner'sginsurancegcompany.g-gCORRECTgANSWER-
A)gagResponsiblegPersongdesignatedgbygthegbuildinggowner.
Insecticidalgfogginggoperationsgareghazardousgbecausegchemicals
A) aregcorrosive.
B) aregwater-reactive.
C) maygbegtoxic.
D) areghighlygunstable.g-gCORRECTgANSWER-C)gmaygbegtoxic.
Whatgisgagcompressorgsafetyghead?
A) Rupturegdisc.
B) Agpressuregreliefgvalvegongtheglowgside.
C) Cylindergheadgwithgaglowgpressuregreliefgongtheghighgside.
D) Agspringgongthegvalvegplate.g-gCORRECTgANSWER-
,Thegoilgcollectedgingangoilgseparatorgisggenerally
A) causedgbygangoilgovercharge.
B) returnedgtogthegcompressor.
C) filteredgandgreturnedgtogthegcompressor.
D) drainedgandgreplacedgbygfreshgoil.g-gCORRECTgANSWER-
Wheregisgemergencygpowergnotgrequiredgaccordinggtogcode?
A) Firegpumps.
B) Highgrisegelevators.
C) Egressgillumination.
D) Datagcenters.g-gCORRECTgANSWER-D)gDatagcenters.
Moderngcompressorsgusuallygsealgthegrotatinggshaftgsealgasgitgexitsgthegcompressorghousinggagspring-
gloadedgsealgmadegof
A) low-frictiongplastic.
B) rubber.
C) metalgorgcarbon.
D) graphite-loadedgfiber.g-gCORRECTgANSWER-
Agtechniciangshowsgupgtogservicegthegfiregalarmgpanelgingyourgbuilding.gWhatgCOFgqualificationsgmustg
he/sheghave?
A) AgQ-01/Q-99gCertificategofgQualificationgholdergwhogisgdesignatedgbygthegbuildinggowner.
B) AgcertifiedgFiregSafetygDirectorgwhogisgdesignatedgbygthegbuildinggowner.
C) AgS-95gCertificategofgFitnessgholdergwhogisgemployedgbygagFDNYgcertifiedgcompany.
,D) AgS-97/S-98gCertificategofgFitnessgholdergwhogisgemployedgbygagFDNYgcertifiedgcompany.g-
gCORRECTgANSWER-D)gAgS-97/S-
98gCertificategofgFitnessgholdergwhogisgemployedgbygagFDNYgcertifiedgcompany.
Whichgstatementgisgcorrectgregardinggagfusiblegpluggongagcondenser?
A) Thegmeltinggpointgisgmarkedgongit.
B) Aregnotgallowedgbygcode.
C) Releasegrefrigerantgbygpressure.
D) Cangbegback-seated.g-gCORRECTgANSWER-
Ingangofficegbuilding,gthegdisplaygofgcutgnaturalgtreesg(Christmasgtrees)gis
A) nevergallowed.
B) allowedgprovidedgtheygaregremovedgoncegtheygdrygout.
C) alwaysgallowed.
D) allowedgduringgthegholidaygseason.g-gCORRECTgANSWER-A)gnevergallowed.
Describegthegequipment'sgfunctiongingthegpicture.
A) Controlgflowgofgrefrigerantgtogthegcompressor.
B) Removegnon-condensablegfromgthegcondenser.
C) Relievegexcessgpressuregfromgthegcondenser.
D) Relievegexcessgpressuregfromgthegevaporator.g-gCORRECTgANSWER-B)gRemovegnon-
condensablegfromgthegcondenser.
Whengthegexpansiongvalvegisgoperatinggproperly,gthegendgofgthegevaporatorgwillgcontain
A) onlygsuperheatedgvapor.
B) saturatedgliquidgrefrigerant
C) onlygvapor.
D) onlygliquidgrefrigerant.g-gCORRECTgANSWER-A)gonlygsuperheatedgvapor.
, Howgmuchgextragrefrigerantgcongbegstoredgingagmachinegroom?
A) 330glbs.
B) Thegamountgequalgtogthegdesigngpressure.
C) 20%gabovegnormalgcharge.
D) 220glbs.g-gCORRECTgANSWER-C)g20%gabovegnormalgcharge.
Agrefrigerationgcompressorghasgfailedgtogturngon.gThegrefrigerationgengineergongdutygverifiesgthatgtheg
electricalgcircuitgtogthegmotor,gincludinggallgswitchesgandgcircuitgbreakers,gisgcompletegaccordinggtogrec
ommendedgservicegpractice.gThegnextgitemgtogbegcheckedgwouldglikelygbygthe
A) temperaturegandgpressuregcontrols.
B) refrigerantgcharge.
C) coolinggtowergoperation.
D) liquid-linegsolenoidgvalve.g-gCORRECTgANSWER-A)gtemperaturegandgpressuregcontrols.
Thegusegofgoilgingthegrefrigerationgmachinegisgto
A) Addgnon-condensatesgtogrefrigerant.
B) Mixgthegoilgwithgliquidgrefrigerant.
C) Reducegweargandgfrictiongingcompressorgparts.
D) Nonegofgtheganswersgaregcorrect.g-gCORRECTgANSWER-
C)gReducegweargandgfrictiongingcompressorgparts.
Thegheatgremovedgfromgthegrefrigerantgcondensergis
A) latentgheatgonly.
B) sensiblegheatgonly.
C) sensiblegandglatentgheat.
D) Radiantgheatgonly.g-gCORRECTgANSWER-C)gsensiblegandglatentgheat.
Whichgservicegvalvegshouldgbeginstalledgingagdualgpressuregreleasegvalvegwhilegkeepinggsystemgingservice?
A) Two-waygvalve.
B) Pluggvalve.
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D A STUDY GUIDE EXAM 2024 VERSION 200
g g g g g g g
QUESTIONS WITH DETAILED VERIFIED ANSWERS AN
g g g g g
D RATIONALES /A+ GRADE ASSURED
g g g g
Ingagsteamgturbine,gwhatgisgthegfunctiongofgagKingsburygthrustgbearing?
A) Maintaingfirstgstagegsteamgpressure.
B) Compensategforgcouplinggmisalignment.
C) Adjustgshaftgtorquegatgstartgup.
D) Maintaingaxialgpositioninggofgthegrotorgshaft.g-gCORRECTgANSWER-
D)gMaintaingaxialgpositioninggofgthegrotorgshaft.
Hotgworkgauthorizationsgaregissuedgby
A) agResponsiblegPersongdesignatedgbygthegBuildinggOwner.
B) agBuildinggDepartmentginspector.
C) agFDNYginspector.
D) thegBuildinggowner'sginsurancegcompany.g-gCORRECTgANSWER-
A)gagResponsiblegPersongdesignatedgbygthegbuildinggowner.
Insecticidalgfogginggoperationsgareghazardousgbecausegchemicals
A) aregcorrosive.
B) aregwater-reactive.
C) maygbegtoxic.
D) areghighlygunstable.g-gCORRECTgANSWER-C)gmaygbegtoxic.
Whatgisgagcompressorgsafetyghead?
A) Rupturegdisc.
B) Agpressuregreliefgvalvegongtheglowgside.
C) Cylindergheadgwithgaglowgpressuregreliefgongtheghighgside.
D) Agspringgongthegvalvegplate.g-gCORRECTgANSWER-
,Thegoilgcollectedgingangoilgseparatorgisggenerally
A) causedgbygangoilgovercharge.
B) returnedgtogthegcompressor.
C) filteredgandgreturnedgtogthegcompressor.
D) drainedgandgreplacedgbygfreshgoil.g-gCORRECTgANSWER-
Wheregisgemergencygpowergnotgrequiredgaccordinggtogcode?
A) Firegpumps.
B) Highgrisegelevators.
C) Egressgillumination.
D) Datagcenters.g-gCORRECTgANSWER-D)gDatagcenters.
Moderngcompressorsgusuallygsealgthegrotatinggshaftgsealgasgitgexitsgthegcompressorghousinggagspring-
gloadedgsealgmadegof
A) low-frictiongplastic.
B) rubber.
C) metalgorgcarbon.
D) graphite-loadedgfiber.g-gCORRECTgANSWER-
Agtechniciangshowsgupgtogservicegthegfiregalarmgpanelgingyourgbuilding.gWhatgCOFgqualificationsgmustg
he/sheghave?
A) AgQ-01/Q-99gCertificategofgQualificationgholdergwhogisgdesignatedgbygthegbuildinggowner.
B) AgcertifiedgFiregSafetygDirectorgwhogisgdesignatedgbygthegbuildinggowner.
C) AgS-95gCertificategofgFitnessgholdergwhogisgemployedgbygagFDNYgcertifiedgcompany.
,D) AgS-97/S-98gCertificategofgFitnessgholdergwhogisgemployedgbygagFDNYgcertifiedgcompany.g-
gCORRECTgANSWER-D)gAgS-97/S-
98gCertificategofgFitnessgholdergwhogisgemployedgbygagFDNYgcertifiedgcompany.
Whichgstatementgisgcorrectgregardinggagfusiblegpluggongagcondenser?
A) Thegmeltinggpointgisgmarkedgongit.
B) Aregnotgallowedgbygcode.
C) Releasegrefrigerantgbygpressure.
D) Cangbegback-seated.g-gCORRECTgANSWER-
Ingangofficegbuilding,gthegdisplaygofgcutgnaturalgtreesg(Christmasgtrees)gis
A) nevergallowed.
B) allowedgprovidedgtheygaregremovedgoncegtheygdrygout.
C) alwaysgallowed.
D) allowedgduringgthegholidaygseason.g-gCORRECTgANSWER-A)gnevergallowed.
Describegthegequipment'sgfunctiongingthegpicture.
A) Controlgflowgofgrefrigerantgtogthegcompressor.
B) Removegnon-condensablegfromgthegcondenser.
C) Relievegexcessgpressuregfromgthegcondenser.
D) Relievegexcessgpressuregfromgthegevaporator.g-gCORRECTgANSWER-B)gRemovegnon-
condensablegfromgthegcondenser.
Whengthegexpansiongvalvegisgoperatinggproperly,gthegendgofgthegevaporatorgwillgcontain
A) onlygsuperheatedgvapor.
B) saturatedgliquidgrefrigerant
C) onlygvapor.
D) onlygliquidgrefrigerant.g-gCORRECTgANSWER-A)gonlygsuperheatedgvapor.
, Howgmuchgextragrefrigerantgcongbegstoredgingagmachinegroom?
A) 330glbs.
B) Thegamountgequalgtogthegdesigngpressure.
C) 20%gabovegnormalgcharge.
D) 220glbs.g-gCORRECTgANSWER-C)g20%gabovegnormalgcharge.
Agrefrigerationgcompressorghasgfailedgtogturngon.gThegrefrigerationgengineergongdutygverifiesgthatgtheg
electricalgcircuitgtogthegmotor,gincludinggallgswitchesgandgcircuitgbreakers,gisgcompletegaccordinggtogrec
ommendedgservicegpractice.gThegnextgitemgtogbegcheckedgwouldglikelygbygthe
A) temperaturegandgpressuregcontrols.
B) refrigerantgcharge.
C) coolinggtowergoperation.
D) liquid-linegsolenoidgvalve.g-gCORRECTgANSWER-A)gtemperaturegandgpressuregcontrols.
Thegusegofgoilgingthegrefrigerationgmachinegisgto
A) Addgnon-condensatesgtogrefrigerant.
B) Mixgthegoilgwithgliquidgrefrigerant.
C) Reducegweargandgfrictiongingcompressorgparts.
D) Nonegofgtheganswersgaregcorrect.g-gCORRECTgANSWER-
C)gReducegweargandgfrictiongingcompressorgparts.
Thegheatgremovedgfromgthegrefrigerantgcondensergis
A) latentgheatgonly.
B) sensiblegheatgonly.
C) sensiblegandglatentgheat.
D) Radiantgheatgonly.g-gCORRECTgANSWER-C)gsensiblegandglatentgheat.
Whichgservicegvalvegshouldgbeginstalledgingagdualgpressuregreleasegvalvegwhilegkeepinggsystemgingservice?
A) Two-waygvalve.
B) Pluggvalve.
