ABSA 4A Exam Questions and Answers Verified Solutions Latest
Update
Question: The typical time required to heat a fluidized bed to ignition temperature prior to the
introduction of coal is: Select one: a. Two hours b. Three hours c. One hour d. 30 minutes When
welding thick materials, proper weld groove selection and preparation allows for: Select one: a. a quick
weld b. proper heat treatment c. full penetration d. omitting the root pass An interrupted pilot of an
automatic boiler: Select one: a. Ignites, is proven stable and extinguishes after the main flame is
established b. Is one that has been extinguished by an inadequate flame signal c. Ignites before the
main burner ignites, and is extinguished when the main burner is extinguished d. Burns continuously,
like that in a home furnace https://quizlet. com/ca/870360272/absa-4a-flash-cards/1/18
Answer:
CCA
Question: In a fluidized bed boiler, a gradual loss of the fluidized bed, including fuel (carbon)
particles, is due to: Select one: a. Priming b. Sootblowing c. Uplift d. Carryover The test material for a
penetrant test (PT) must be: Select one: a. ferrous b. non-ferrous c. porous d. non-porous If your plant
maintenance department neglects oil changes, filter replacement, and bearing lubrication, your plant
will eventually need more unscheduled _ ______ maintenance. Select one: a. Emergency b.
Preventative c. Routine d. Project The holder of a Certificate of Competency, the classification of
which authorises him or her to act as a engineer, may sketch, construct, install, operate, repair, and give
advice on all things pertaining to any in which that person is employed. Select one: a. Welding shop b.
Power plant c. Fish plant d. Hydro plant Which of the following is a single pass boiler? Select one: a.
HRT b. Scotch marine c. Packaged firetube d. Vertical firetube Iron and steel may be magnetized by
rubbing the metal with a: Select one: a. Stainless steel b. Steel wool c. Brass rod d. Magnet
https://quizlet. com/ca/870360272/absa-4a-flash-cards/2/18
Answer:
DDABDD
, Question: The apparatus which converts current signals to pneumatic and pneumatic to current signals
is called a: Select one: a. Transformer b. Inverter c. Transducer d. Converter Before a steam or air
atomizing oil burner is removed from a boiler furnace, the burner should be blown out with: Select one:
a. Steam or air b. High temperature solvent c. Coal oil d. Solvent Which of the following emissions is
NOT considered a gaseous pollutant? Select one: a. Nitrogen b. Methane c. Sulphur oxides d. Carbon
monoxide A thermostatic steam trap is controlled by the: Select one: a. Bucket, which flips when filled
with condensate b. Temperature difference between condensate and steam c. air pressure built up on
top of disk d. Difference in velocity between condensate and steam A typical application of forged steel
in a power plant is: Select one: a. Ash handling systems b. Superheated steam lines c. Superheated
steam lines d. Pipe fittings A disadvantage of an electric boiler is that it: Select one: a. Is very
expensive to operate b. Is inefficient c. Requires alternating current d. Has no chimney https://quizlet.
com/ca/870360272/absa-4a-flash-cards/3/18
Answer:
CAABDA
Question: The amount of air required to supply just enough oxygen for complete combustion is called
the: Select one: a. Excess air b. Perfect air c. Primary air d. Theoretical air "Transpiration" is the
process where: Select one: a. dissolved oxygen is expelled from water b. water vapour goes through a
phase change c. plants release water d. animals inhale oxygen A Van Stone flange is fitted ________
on a pipe: Select one: a. With evenly spaced set screws b. Loosely c. By threading coursely d. with tack
welds Current transformers are: Select one: a. Voltage step-up transformers b. K-type transformers c.
High power factor transformers d. Current step-up transformers A multi-burner cluster has secondary
and tertiary nozzles ignited by: Select one: a. The primary burner b. An interrupted pilot c. An igniter
spark d. An intermittent pilot flame The flow of electrons in a uniform direction is called: Select one: a.
Voltage drop b. Electric current flow c. Potential difference d. Electromotive flow The advantage of
using a venturi tube, rather than an orifice plate for flow measurement is it: Select one: a. Is less bulky
b. Requires only one pressure tap c. Costs less to install d. Produces less permanent pressure drop
https://quizlet. com/ca/870360272/absa-4a-flash-cards/4/18
Answer:
DCBAABD
Update
Question: The typical time required to heat a fluidized bed to ignition temperature prior to the
introduction of coal is: Select one: a. Two hours b. Three hours c. One hour d. 30 minutes When
welding thick materials, proper weld groove selection and preparation allows for: Select one: a. a quick
weld b. proper heat treatment c. full penetration d. omitting the root pass An interrupted pilot of an
automatic boiler: Select one: a. Ignites, is proven stable and extinguishes after the main flame is
established b. Is one that has been extinguished by an inadequate flame signal c. Ignites before the
main burner ignites, and is extinguished when the main burner is extinguished d. Burns continuously,
like that in a home furnace https://quizlet. com/ca/870360272/absa-4a-flash-cards/1/18
Answer:
CCA
Question: In a fluidized bed boiler, a gradual loss of the fluidized bed, including fuel (carbon)
particles, is due to: Select one: a. Priming b. Sootblowing c. Uplift d. Carryover The test material for a
penetrant test (PT) must be: Select one: a. ferrous b. non-ferrous c. porous d. non-porous If your plant
maintenance department neglects oil changes, filter replacement, and bearing lubrication, your plant
will eventually need more unscheduled _ ______ maintenance. Select one: a. Emergency b.
Preventative c. Routine d. Project The holder of a Certificate of Competency, the classification of
which authorises him or her to act as a engineer, may sketch, construct, install, operate, repair, and give
advice on all things pertaining to any in which that person is employed. Select one: a. Welding shop b.
Power plant c. Fish plant d. Hydro plant Which of the following is a single pass boiler? Select one: a.
HRT b. Scotch marine c. Packaged firetube d. Vertical firetube Iron and steel may be magnetized by
rubbing the metal with a: Select one: a. Stainless steel b. Steel wool c. Brass rod d. Magnet
https://quizlet. com/ca/870360272/absa-4a-flash-cards/2/18
Answer:
DDABDD
, Question: The apparatus which converts current signals to pneumatic and pneumatic to current signals
is called a: Select one: a. Transformer b. Inverter c. Transducer d. Converter Before a steam or air
atomizing oil burner is removed from a boiler furnace, the burner should be blown out with: Select one:
a. Steam or air b. High temperature solvent c. Coal oil d. Solvent Which of the following emissions is
NOT considered a gaseous pollutant? Select one: a. Nitrogen b. Methane c. Sulphur oxides d. Carbon
monoxide A thermostatic steam trap is controlled by the: Select one: a. Bucket, which flips when filled
with condensate b. Temperature difference between condensate and steam c. air pressure built up on
top of disk d. Difference in velocity between condensate and steam A typical application of forged steel
in a power plant is: Select one: a. Ash handling systems b. Superheated steam lines c. Superheated
steam lines d. Pipe fittings A disadvantage of an electric boiler is that it: Select one: a. Is very
expensive to operate b. Is inefficient c. Requires alternating current d. Has no chimney https://quizlet.
com/ca/870360272/absa-4a-flash-cards/3/18
Answer:
CAABDA
Question: The amount of air required to supply just enough oxygen for complete combustion is called
the: Select one: a. Excess air b. Perfect air c. Primary air d. Theoretical air "Transpiration" is the
process where: Select one: a. dissolved oxygen is expelled from water b. water vapour goes through a
phase change c. plants release water d. animals inhale oxygen A Van Stone flange is fitted ________
on a pipe: Select one: a. With evenly spaced set screws b. Loosely c. By threading coursely d. with tack
welds Current transformers are: Select one: a. Voltage step-up transformers b. K-type transformers c.
High power factor transformers d. Current step-up transformers A multi-burner cluster has secondary
and tertiary nozzles ignited by: Select one: a. The primary burner b. An interrupted pilot c. An igniter
spark d. An intermittent pilot flame The flow of electrons in a uniform direction is called: Select one: a.
Voltage drop b. Electric current flow c. Potential difference d. Electromotive flow The advantage of
using a venturi tube, rather than an orifice plate for flow measurement is it: Select one: a. Is less bulky
b. Requires only one pressure tap c. Costs less to install d. Produces less permanent pressure drop
https://quizlet. com/ca/870360272/absa-4a-flash-cards/4/18
Answer:
DCBAABD
