ABSA: 4TH CLASS PART B -
COMPREHENSIVE EXAM 3 WITH FULL
PACK SOLUTIONS
Which ftype fof foil fproduces fhigher ffluid ffriction?
Select fone:
a. fHigh fviscosity foil
b. fLow fviscosity foil
c. fSynthetic foils
d. fFixed foils f- fcorrect fanswers f-a
A fcounter-flow fcooling ftower f_____________ fthan fa fcrossflow fcooling ftower.
Select fone:
,a. frequires fless ffan fpower
b. fhas fa flower fpressure fdrop
c. fis fshorter
d. frequires fless ffloor fspace f- fcorrect fanswers f-d
Which fof fthe ffollowing fare fchemicals fused ffor fboiler fcleaning fand ftreatment, fthat
frequire fcareful fcontrol fand fvigilant fmonitoring?
Select fone:
a. fChelants
b. fPhosphates
c. fSulfites
d. fSulfates f- fcorrect fanswers f-a
A fhot fwater fsystem fwhich fcirculates fwater fthrough fthe fpipes fwith fa fpump fis fknown
fas fa:
Select fone:
a. fForced fcirculation fsystem
b. fCirculating fsystem
c. fUpfeed fsystem
d. fClosed fsystem f- fcorrect fanswers f-a
Air fcompressor foil fshould:
Select fone:
a. fHave fa fvery flow fviscosity
b. fHave flow fcarbon fresidue
c. fHave fa flow fflash fpoint
d. fNot fcontain fanti-oxidants f- fcorrect fanswers f-b
Although fboilers fhave fmany fdifferent fignition fsystems, fthey fall ffollow fthe fsame
fsequence fof fsteps. fWhich fof fthe ffollowing fis fthe ffirst fstep?
Select fone:
a. fRun fperiod
b. fMain fburner fignition
c. fPilot fignition
d. fPre-purge f- fcorrect fanswers f-d
Most fmunicipal fwater fdistribution fsystems foperate fat fpressures fbetween:
Select fone:
a. f590 fand f602 fkPa
b. f490 fand f690 fkPa
, c. f250 fand f350 fkPa
d. f350 fand f490 fkPa f- fcorrect fanswers f-d
In fnewer fsteam fheating fsystems, fthe fcondensate fdischarged fby fthe fsteam ftraps
fdrains fby fgravity fthrough fthe freturn fpiping fto:
Select fone:
a. fA fdeaerator
b. fA fcombination ffeeder/cut-off fcontrol.
c. fA fcondensate ftank
d. fThe fboiler f- fcorrect fanswers f-c
The fpurpose fof fa fboiler fboil fout fis fto:
Select fone:
a. fclean fthe ffireside fsurfaces.
b. fdry fout fthe frefractory.
c. fdetermine fthe flevel fat fwhich fthe flow fwater fcut-off ffunctions.
d. fremove fgrease fand foil ffrom fthe fheat ftransfer fsurfaces. f- fcorrect fanswers f-d
A fhigh fwater flevel fin fa fboiler:
Select fone:
a. fMay fcause fwater fcarryover finto fthe fheader
b. fWill fnecessitate fan fimmediate fshutdown fand fcool fdown
c. fIs fusually fcaused fby fa fboiler ffeed fpump fmalfunction
d. fWill fcause fthe fhigh fwater fcut-off fto fshut fdown fthe fboiler f- fcorrect fanswers f-a
_____ fare finstalled fto fprevent fhot foil ffrom fspreading fbeyond fthe fconfines fof fa fhot
foil fheater fin fthe fevent fof fa fruptured ftube.
Select fone:
a. fBy-pass fpipes
b. fDitches
c. fTunnels
d. fDikes f- fcorrect fanswers f-d
When fused fon fa fboiler, fmodulating fcombustion fcontrol fwill:
Select fone:
a. fChange fair fand ffuel fflow fproportionally fto fchanges fin fsteam fpressure
b. fAlways fbe fat fset fpoint fwhen fdemand fis fat f50%
c. fAlter fonly fthe fair fflow fif fa fselector fstation fis fon fmanual
d. fRespond fto fchanges fin fatmospheric fpressure f- fcorrect fanswers f-a
COMPREHENSIVE EXAM 3 WITH FULL
PACK SOLUTIONS
Which ftype fof foil fproduces fhigher ffluid ffriction?
Select fone:
a. fHigh fviscosity foil
b. fLow fviscosity foil
c. fSynthetic foils
d. fFixed foils f- fcorrect fanswers f-a
A fcounter-flow fcooling ftower f_____________ fthan fa fcrossflow fcooling ftower.
Select fone:
,a. frequires fless ffan fpower
b. fhas fa flower fpressure fdrop
c. fis fshorter
d. frequires fless ffloor fspace f- fcorrect fanswers f-d
Which fof fthe ffollowing fare fchemicals fused ffor fboiler fcleaning fand ftreatment, fthat
frequire fcareful fcontrol fand fvigilant fmonitoring?
Select fone:
a. fChelants
b. fPhosphates
c. fSulfites
d. fSulfates f- fcorrect fanswers f-a
A fhot fwater fsystem fwhich fcirculates fwater fthrough fthe fpipes fwith fa fpump fis fknown
fas fa:
Select fone:
a. fForced fcirculation fsystem
b. fCirculating fsystem
c. fUpfeed fsystem
d. fClosed fsystem f- fcorrect fanswers f-a
Air fcompressor foil fshould:
Select fone:
a. fHave fa fvery flow fviscosity
b. fHave flow fcarbon fresidue
c. fHave fa flow fflash fpoint
d. fNot fcontain fanti-oxidants f- fcorrect fanswers f-b
Although fboilers fhave fmany fdifferent fignition fsystems, fthey fall ffollow fthe fsame
fsequence fof fsteps. fWhich fof fthe ffollowing fis fthe ffirst fstep?
Select fone:
a. fRun fperiod
b. fMain fburner fignition
c. fPilot fignition
d. fPre-purge f- fcorrect fanswers f-d
Most fmunicipal fwater fdistribution fsystems foperate fat fpressures fbetween:
Select fone:
a. f590 fand f602 fkPa
b. f490 fand f690 fkPa
, c. f250 fand f350 fkPa
d. f350 fand f490 fkPa f- fcorrect fanswers f-d
In fnewer fsteam fheating fsystems, fthe fcondensate fdischarged fby fthe fsteam ftraps
fdrains fby fgravity fthrough fthe freturn fpiping fto:
Select fone:
a. fA fdeaerator
b. fA fcombination ffeeder/cut-off fcontrol.
c. fA fcondensate ftank
d. fThe fboiler f- fcorrect fanswers f-c
The fpurpose fof fa fboiler fboil fout fis fto:
Select fone:
a. fclean fthe ffireside fsurfaces.
b. fdry fout fthe frefractory.
c. fdetermine fthe flevel fat fwhich fthe flow fwater fcut-off ffunctions.
d. fremove fgrease fand foil ffrom fthe fheat ftransfer fsurfaces. f- fcorrect fanswers f-d
A fhigh fwater flevel fin fa fboiler:
Select fone:
a. fMay fcause fwater fcarryover finto fthe fheader
b. fWill fnecessitate fan fimmediate fshutdown fand fcool fdown
c. fIs fusually fcaused fby fa fboiler ffeed fpump fmalfunction
d. fWill fcause fthe fhigh fwater fcut-off fto fshut fdown fthe fboiler f- fcorrect fanswers f-a
_____ fare finstalled fto fprevent fhot foil ffrom fspreading fbeyond fthe fconfines fof fa fhot
foil fheater fin fthe fevent fof fa fruptured ftube.
Select fone:
a. fBy-pass fpipes
b. fDitches
c. fTunnels
d. fDikes f- fcorrect fanswers f-d
When fused fon fa fboiler, fmodulating fcombustion fcontrol fwill:
Select fone:
a. fChange fair fand ffuel fflow fproportionally fto fchanges fin fsteam fpressure
b. fAlways fbe fat fset fpoint fwhen fdemand fis fat f50%
c. fAlter fonly fthe fair fflow fif fa fselector fstation fis fon fmanual
d. fRespond fto fchanges fin fatmospheric fpressure f- fcorrect fanswers f-a
