ABSA: 4TH CLASS PART B -
COMPREHENSIVE EXAM 2 100%
SOLVED
What dmust dbe dlocated doutside da dClass dT dmachinery droom?
Select done:
a. dSpare dflashlights
b. dDisposable dcoveralls
c. dMachinery dshut doff dswitch
d. dLight dswitches d- dcorrect danswers d-c
Degradation dof dheat dtransfer dfluid dof da dhot doil dsystem dwill dbegin dto doccur dif:
Select done:
a. dThe doil dfilter dis dnot dserviced dregularly
,b. dThe doil dtemperature dis dabove da dspecified drange, dfor dan dextended dperiod dof
dtime
c. dThe doil dis dallowed dto dchurn din dthe dcirculating dpump
d. dThe doil dbecomes dtoo dviscous d- dcorrect danswers d-b
Dry dand dflooded devaporators ddiffer dprimarily din dwhat drespect?
Select done:
a. dDry devaporators duse dlow-side dfloats, dwhereas dflooded devaporators duse dhigh-
side dfloats
b. dFlooded dsystems dprimarily duse dGroup dB1 dand dB2 drefrigerants
c. dThe dheat dtransfer dsurfaces dof da dflooded devaporator dare dkept dcovered dwith
dliquid drefrigerant
d. dThe ddry devaporator dis ddesigned dto dcool dgases donly d- dcorrect danswers d-c
It dis dgood ddesign dpractice dto dselect da dsteam dcoil dsize dso dthat:
Select done:
a. dAt dleast d10% dof dthe dcoil dcapacity dis dneeded dwhen dthe dair dtemperature dat
dthe dcoil dinlet dis d€"5°C
b. dAt dleast d80% dof dthe dcoil dcapacity dis dneeded dwhen dthe dair dtemperature dat
dthe dcoil dinlet dis d€"1°C
c. dAt dleast d40% dof dthe dcoil dcapacity dis dneeded dwhen dthe dair dtemperature
dentering dthe dcoil dis d€"1°C
d. d100% dof dthe dcoil dcapacity dis dneeded dwhen dthe dair dtemperature dentering dthe
dcoil dis d€"1°C d- dcorrect danswers d-c
The dfinal dstep dwhen dreplacing da dfiretube dis:
Select done:
a. dRe-expansion
b. dHydrostatic dtest
c. dSeal dwelding
d. dAnnealing dthe dtube dends d- dcorrect danswers d-b
If da dboiler dsustains da dlow dwater dcondition
Select done:
a. dopen dthe dsafety dvalve dor ddrum dvent dvalve dto drelease dpressure.
b. duse dcool dfeedwater dto dquench dany doverheated dheating dsurface.
c. dshut ddown dthe dburner, dlet dthe dboiler dcool dslowly, dthen ddrain dand dinspect dit
dfor ddamage ddue dto doverheating.
d. dimmediately dfeed dwater dinto dthe dboiler dto draise dthe dlevel. d- dcorrect danswers d-
c
An dadvantage dof da dpump dusing da dmechanical dseal dis:
, Select done:
a. dEase dof drepair
b. dLess dlubrication
c. dLess dmaintenance
d. dLower dfirst dcost d- dcorrect danswers d-c
For deconomical doperation, dthe dsteam dsupply dto da dsteam dengine dis dcut doff donce
dthe dpiston dhas dtraveled d_______ dof dits dstroke.
Select done:
a. d1
b. d75% dto d90%
c. d1/2 dto d5/8
d. d1/4 dto d1/3 d- dcorrect danswers d-d
A dhigh dstack dtemperature din da dhot doil dheater dmay dindicate:
Select done:
a. dInadequate dcombustion dair
b. dA dtube dfailure
c. dExcessive doil dflow
d. dImproper dfuel-air dratio d- dcorrect danswers d-b
The dtype dof dpump dnormally dused dwith da dhot doil dsystem dis da:
Select done:
a. dSliding dvane dpump
b. dRotary dscrew dpump
c. dConventional, dsingle dstage dcentrifugal dpump
d. dMultistage dreciprocating dpump d- dcorrect danswers d-c
Temperature drelief ddevices dcan dopen don da drise din dtemperature dby dthe
dexpansion dof da dwax-filled drod dor dby dthe:
Select done:
a. dAction dof da dbellows
b. dAction dof da dbi-metal dstrip
c. dMelting dof da dfusible dlink
d. dMelting dof dthe dalloy din da dfusible dplug d- dcorrect danswers d-d
Who dshould dverify da dsteam dboiler dlockout?
Select done:
a. dEach dand devery dcontractor dor demployee dworking don dthe dboiler.
b. dA drepresentative dof dthe dplant dWorkplace dSafety dand dHealth dcommittee.
COMPREHENSIVE EXAM 2 100%
SOLVED
What dmust dbe dlocated doutside da dClass dT dmachinery droom?
Select done:
a. dSpare dflashlights
b. dDisposable dcoveralls
c. dMachinery dshut doff dswitch
d. dLight dswitches d- dcorrect danswers d-c
Degradation dof dheat dtransfer dfluid dof da dhot doil dsystem dwill dbegin dto doccur dif:
Select done:
a. dThe doil dfilter dis dnot dserviced dregularly
,b. dThe doil dtemperature dis dabove da dspecified drange, dfor dan dextended dperiod dof
dtime
c. dThe doil dis dallowed dto dchurn din dthe dcirculating dpump
d. dThe doil dbecomes dtoo dviscous d- dcorrect danswers d-b
Dry dand dflooded devaporators ddiffer dprimarily din dwhat drespect?
Select done:
a. dDry devaporators duse dlow-side dfloats, dwhereas dflooded devaporators duse dhigh-
side dfloats
b. dFlooded dsystems dprimarily duse dGroup dB1 dand dB2 drefrigerants
c. dThe dheat dtransfer dsurfaces dof da dflooded devaporator dare dkept dcovered dwith
dliquid drefrigerant
d. dThe ddry devaporator dis ddesigned dto dcool dgases donly d- dcorrect danswers d-c
It dis dgood ddesign dpractice dto dselect da dsteam dcoil dsize dso dthat:
Select done:
a. dAt dleast d10% dof dthe dcoil dcapacity dis dneeded dwhen dthe dair dtemperature dat
dthe dcoil dinlet dis d€"5°C
b. dAt dleast d80% dof dthe dcoil dcapacity dis dneeded dwhen dthe dair dtemperature dat
dthe dcoil dinlet dis d€"1°C
c. dAt dleast d40% dof dthe dcoil dcapacity dis dneeded dwhen dthe dair dtemperature
dentering dthe dcoil dis d€"1°C
d. d100% dof dthe dcoil dcapacity dis dneeded dwhen dthe dair dtemperature dentering dthe
dcoil dis d€"1°C d- dcorrect danswers d-c
The dfinal dstep dwhen dreplacing da dfiretube dis:
Select done:
a. dRe-expansion
b. dHydrostatic dtest
c. dSeal dwelding
d. dAnnealing dthe dtube dends d- dcorrect danswers d-b
If da dboiler dsustains da dlow dwater dcondition
Select done:
a. dopen dthe dsafety dvalve dor ddrum dvent dvalve dto drelease dpressure.
b. duse dcool dfeedwater dto dquench dany doverheated dheating dsurface.
c. dshut ddown dthe dburner, dlet dthe dboiler dcool dslowly, dthen ddrain dand dinspect dit
dfor ddamage ddue dto doverheating.
d. dimmediately dfeed dwater dinto dthe dboiler dto draise dthe dlevel. d- dcorrect danswers d-
c
An dadvantage dof da dpump dusing da dmechanical dseal dis:
, Select done:
a. dEase dof drepair
b. dLess dlubrication
c. dLess dmaintenance
d. dLower dfirst dcost d- dcorrect danswers d-c
For deconomical doperation, dthe dsteam dsupply dto da dsteam dengine dis dcut doff donce
dthe dpiston dhas dtraveled d_______ dof dits dstroke.
Select done:
a. d1
b. d75% dto d90%
c. d1/2 dto d5/8
d. d1/4 dto d1/3 d- dcorrect danswers d-d
A dhigh dstack dtemperature din da dhot doil dheater dmay dindicate:
Select done:
a. dInadequate dcombustion dair
b. dA dtube dfailure
c. dExcessive doil dflow
d. dImproper dfuel-air dratio d- dcorrect danswers d-b
The dtype dof dpump dnormally dused dwith da dhot doil dsystem dis da:
Select done:
a. dSliding dvane dpump
b. dRotary dscrew dpump
c. dConventional, dsingle dstage dcentrifugal dpump
d. dMultistage dreciprocating dpump d- dcorrect danswers d-c
Temperature drelief ddevices dcan dopen don da drise din dtemperature dby dthe
dexpansion dof da dwax-filled drod dor dby dthe:
Select done:
a. dAction dof da dbellows
b. dAction dof da dbi-metal dstrip
c. dMelting dof da dfusible dlink
d. dMelting dof dthe dalloy din da dfusible dplug d- dcorrect danswers d-d
Who dshould dverify da dsteam dboiler dlockout?
Select done:
a. dEach dand devery dcontractor dor demployee dworking don dthe dboiler.
b. dA drepresentative dof dthe dplant dWorkplace dSafety dand dHealth dcommittee.
