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Exam (elaborations)

Power Engineering 4A.

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2025/2026 Written for academic year
Institution POWER ENGINEERING
Course POWER ENGINEERING
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POWER ENGINEERING 4A.

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POWER ENGINEERING 4A - TEST
REVIEW 4




The0typical0time0required0to0heat0a0fluidized0bed0to0ignition0temperature0prior0to0the0in
troduction0of0coal0is:
Select0one:
a.0Two0hours
b.0Three0hours
c.0One0hour
d.0300minutes0-0ans✔C

When0welding0thick0materials,0proper0weld0groove0selection0and0preparation0allows0fo
r:
Select0one:
a.0a0quick0weld
b.0proper0heat0treatment
c.0full0penetration
d.0omitting0the0root0pass0-0ans✔C

An0interrupted0pilot0of0an0automatic0boiler:
Select0one:
a.0Ignites,0is0proven0stable0and0extinguishes0after0the0main0flame0is0established
b.0Is0one0that0has0been0extinguished0by0an0inadequate0flame0signal
c.0Ignites0before0the0main0burner0ignites,0and0is0extinguished0when0the0main0burner0is
0extinguished
d.0Burns0continuously,0like0that0in0a0home0furnace0-0ans✔A

In0a0fluidized0bed0boiler,0a0gradual0loss0of0the0fluidized0bed,0including0fuel0(carbon)0pa
rticles,0is0due0to:
Select0one:
a.0Priming
b.0Sootblowing
c.0Uplift
d.0Carryover0-0ans✔D

The0test0material0for0a0penetrant0test0(PT)0must0be:
Select0one:

,a.0ferrous
b.0non-ferrous
c.0porous
d.0non-porous0-0ans✔D

If0your0plant0maintenance0department0neglects0oil0changes,0filter0replacement,0and0be
aring0lubrication,0your0plant0will0eventually0need0more0unscheduled0___________0mai
ntenance.
Select0one:
a.0Emergency
b.0Preventative
c.0Routine
d.0Project0-0ans✔A

The0holder0of0a0Certificate0of0Competency,0the0classification0of0which0authorises0him0
or0her0to0act0as0a0engineer,0may0sketch,0construct,0install,0operate,0repair,0and0give0a
dvice0on0all0things0pertaining0to0any0_____0in0which0that0person0is0employed.
Select0one:
a.0Welding0shop
b.0Power0plant
c.0Fish0plant
d.0Hydro0plant0-0ans✔B

Which0of0the0following0is0a0single0pass0boiler?
Select0one:
a.0HRT
b.0Scotch0marine
c.0Packaged0firetube
d.0Vertical0firetube0-0ans✔D

Iron0and0steel0may0be0magnetized0by0rubbing0the0metal0with0a:
Select0one:
a.0Stainless0steel
b.0Steel0wool
c.0Brass0rod
d.0Magnet0-0ans✔D

The0apparatus0which0converts0current0signals0to0pneumatic0and0pneumatic0to0current0
signals0is0called0a:
Select0one:
a.0Transformer
b.0Inverter
c.0Transducer
d.0Converter0-0ans✔C

, Before0a0steam0or0air0atomizing0oil0burner0is0removed0from0a0boiler0furnace,0the0burn
er0should0be0blown0out0with:
Select0one:
a.0Steam0or0air
b.0High0temperature0solvent
c.0Coal0oil
d.0Solvent0-0ans✔A

Which0of0the0following0emissions0is0NOT0considered0a0gaseous0pollutant?
Select0one:
a.0Nitrogen
b.0Methane
c.0Sulphur0oxides
d.0Carbon0monoxide0-0ans✔A

A0thermostatic0steam0trap0is0controlled0by0the:
Select0one:
a.0Bucket,0which0flips0when0filled0with0condensate
b.0Temperature0difference0between0condensate0and0steam
c.0air0pressure0built0up0on0top0of0disk
d.0Difference0in0velocity0between0condensate0and0steam0-0ans✔B

A0typical0application0of0forged0steel0in0a0power0plant0is:
Select0one:
a.0Ash0handling0systems
b.0Superheated0steam0lines
c.0Superheated0steam0lines
d.0Pipe0fittings0-0ans✔D

A0disadvantage0of0an0electric0boiler0is0that0it:
Select0one:
a.0Is0very0expensive0to0operate
b.0Is0inefficient
c.0Requires0alternating0current
d.0Has0no0chimney0-0ans✔A

The0amount0of0air0required0to0supply0just0enough0oxygen0for0complete0combustion0is0
called0the:
Select0one:
a.0Excess0air
b.0Perfect0air
c.0Primary0air
d.0Theoretical0air0-0ans✔D

"Transpiration"0is0the0process0where:
Select0one:

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