ABSA: 4TH CLASS PART B -
COMPREHENSIVE EXAM 1 WITH ALL
NEEDED TO PASS
Temporary nhardness nin nfeedwater nis ncaused nby:
Select none:
a. nMagnesium nsulphate
b. nCalcium ncarbonate
c. nMagnesium nbicarbonate
d. nSodium nnitrate n- ncorrect nanswers n-c
What nis nthe nrecommended nboiler nwater npH nfor nwet nlayup?
Select none:
a. n10
,b. n12
c. n7.5
d. n7 n- ncorrect nanswers n-a
A nphotoelectric nflame nscanner:
Select none:
a. nProduces na nsteady nvoltage nsignal
b. nRequires na nclear nline nof nsight nto nthe nflame
c. nconducts ncurrent nthrough nthe nflame
d. nuses na npilot-stat n- ncorrect nanswers n-b
Heavy noil nrecovered nusing nSAGD nor nCSS nis nproperly nreferred nto nas
Select none:
a. nbottoms
b. ncrude
c. ntar
d. nbitumen n- ncorrect nanswers n-d
Humidifying nunits nthat nforce nwarm nair nthrough na nwet npad, nand nreturn nthe nair nto
nthe nroom, nare ncalled:
Select none:
a. nWetted nelement nhumidifiers
b. nPan ntype nhumidifiers nwith nplates
c. nAtomizing nhumidifiers
d. nBypass ntype nhumidifiers n- ncorrect nanswers n-a
The nkind nof ngrease nused nfor nheavily nloaded nmachinery noperating nat nslow
nspeeds nis nthe:
Select none:
a. nSodium nbase ngrease
b. nSpecialty ngrease
c. nCalcium nbase ngrease
d. nAluminum nbase ngrease n- ncorrect nanswers n-b
One nof nthe nadvantages nof ngas-fired ninfrared nheating nover nother ntypes nof nheating
nsystems nis:
Select none:
a. nGas-fired ninfrared nheaters ncan nbe nused nas nthe nmain nheating nsource nfor na
nlarge nbuilding
b. nGas-fired ninfrared nheaters ncan nprovide neffective nspot nheating
c. nGas-fired ninfrared nheaters nrequire nno nfuel nhandling nequipment
, d. nGas-fired ninfrared nheaters ncan nheat nlarge nvolume nenclosures nwith nlittle nfuel n-
ncorrect nanswers n-b
The nnormal nloss nof nzeolite nin na nsodium nzeolite nsoftener nis nabout n_______ nper
nyear.
Select none:
a. n0.1
b. n0.15
c. n0.03
d. n0.05 n- ncorrect nanswers n-c
A nform nof nlubrication nthat nrequires ncontinual nmotion nof na nshaft nor nsurface nis:
Select none:
a. nFluid nfilm nlubrication
b. nForced nlubrication
c. nContinuous nlubrication
d. nBoundary nlubrication n- ncorrect nanswers n-a
A n________ nis na nfired nheater ninstalled nwhere nthe nheat nis nneeded, nthat nheats
nthe nair ndirectly nwithout nthe nuse nof nany nducting.
Select none:
a. nRooftop nunit
b. nUnit nventilator
c. nConvector
d. nUnit nheater n- ncorrect nanswers n-d
With nantifriction nbearings nusing ngrease, nthe nbearings:
Select none:
a. nNever nrequire ncleaning
b. nAre ncleaned nless noften nthan noil-lubricated nbearings
c. ncan nbe ncleaned nby nadding nsolvent nto nthe ngrease ncartridge
d. nMust nbe ncleaned ntwice nas noften nas noil-lubricated nbearings n- ncorrect nanswers
n-b
In na nreaction nturbine nthe nsteam n____________ nwhen npassing nthrough nmoving
nblades.
Select none:
a. nVelocity ndecreases
b. nVelocity nremains nconstant
c. nPressure ndecreases
d. nPressure nincreases n- ncorrect nanswers n-c
COMPREHENSIVE EXAM 1 WITH ALL
NEEDED TO PASS
Temporary nhardness nin nfeedwater nis ncaused nby:
Select none:
a. nMagnesium nsulphate
b. nCalcium ncarbonate
c. nMagnesium nbicarbonate
d. nSodium nnitrate n- ncorrect nanswers n-c
What nis nthe nrecommended nboiler nwater npH nfor nwet nlayup?
Select none:
a. n10
,b. n12
c. n7.5
d. n7 n- ncorrect nanswers n-a
A nphotoelectric nflame nscanner:
Select none:
a. nProduces na nsteady nvoltage nsignal
b. nRequires na nclear nline nof nsight nto nthe nflame
c. nconducts ncurrent nthrough nthe nflame
d. nuses na npilot-stat n- ncorrect nanswers n-b
Heavy noil nrecovered nusing nSAGD nor nCSS nis nproperly nreferred nto nas
Select none:
a. nbottoms
b. ncrude
c. ntar
d. nbitumen n- ncorrect nanswers n-d
Humidifying nunits nthat nforce nwarm nair nthrough na nwet npad, nand nreturn nthe nair nto
nthe nroom, nare ncalled:
Select none:
a. nWetted nelement nhumidifiers
b. nPan ntype nhumidifiers nwith nplates
c. nAtomizing nhumidifiers
d. nBypass ntype nhumidifiers n- ncorrect nanswers n-a
The nkind nof ngrease nused nfor nheavily nloaded nmachinery noperating nat nslow
nspeeds nis nthe:
Select none:
a. nSodium nbase ngrease
b. nSpecialty ngrease
c. nCalcium nbase ngrease
d. nAluminum nbase ngrease n- ncorrect nanswers n-b
One nof nthe nadvantages nof ngas-fired ninfrared nheating nover nother ntypes nof nheating
nsystems nis:
Select none:
a. nGas-fired ninfrared nheaters ncan nbe nused nas nthe nmain nheating nsource nfor na
nlarge nbuilding
b. nGas-fired ninfrared nheaters ncan nprovide neffective nspot nheating
c. nGas-fired ninfrared nheaters nrequire nno nfuel nhandling nequipment
, d. nGas-fired ninfrared nheaters ncan nheat nlarge nvolume nenclosures nwith nlittle nfuel n-
ncorrect nanswers n-b
The nnormal nloss nof nzeolite nin na nsodium nzeolite nsoftener nis nabout n_______ nper
nyear.
Select none:
a. n0.1
b. n0.15
c. n0.03
d. n0.05 n- ncorrect nanswers n-c
A nform nof nlubrication nthat nrequires ncontinual nmotion nof na nshaft nor nsurface nis:
Select none:
a. nFluid nfilm nlubrication
b. nForced nlubrication
c. nContinuous nlubrication
d. nBoundary nlubrication n- ncorrect nanswers n-a
A n________ nis na nfired nheater ninstalled nwhere nthe nheat nis nneeded, nthat nheats
nthe nair ndirectly nwithout nthe nuse nof nany nducting.
Select none:
a. nRooftop nunit
b. nUnit nventilator
c. nConvector
d. nUnit nheater n- ncorrect nanswers n-d
With nantifriction nbearings nusing ngrease, nthe nbearings:
Select none:
a. nNever nrequire ncleaning
b. nAre ncleaned nless noften nthan noil-lubricated nbearings
c. ncan nbe ncleaned nby nadding nsolvent nto nthe ngrease ncartridge
d. nMust nbe ncleaned ntwice nas noften nas noil-lubricated nbearings n- ncorrect nanswers
n-b
In na nreaction nturbine nthe nsteam n____________ nwhen npassing nthrough nmoving
nblades.
Select none:
a. nVelocity ndecreases
b. nVelocity nremains nconstant
c. nPressure ndecreases
d. nPressure nincreases n- ncorrect nanswers n-c
