Power Engineering 4A Questions And Answers 2025/2026
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 - CORRECT ANSWER-C
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 - CORRECT ANSWER-C
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 - CORRECT ANSWER-A
,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 - CORRECT ANSWER-D
The test material for a penetrant test (PT) must be:
Select one:
a. ferrous
b. non-ferrous
c. porous
d. non-porous - CORRECT ANSWER-D
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 - CORRECT ANSWER-A
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 - CORRECT ANSWER-B
Which of the following is a single pass boiler?
Select one:
a. HRT
b. Scotch marine
c. Packaged firetube
d. Vertical firetube - CORRECT ANSWER-D
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 - CORRECT ANSWER-D
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 - CORRECT ANSWER-C
, 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 - CORRECT ANSWER-A
Which of the following emissions is NOT considered a gaseous pollutant?
Select one:
a. Nitrogen
b. Methane
c. Sulphur oxides
d. Carbon monoxide - CORRECT ANSWER-A
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 - CORRECT ANSWER-B
A typical application of forged steel in a power plant is:
Select one:
a. Ash handling systems
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 - CORRECT ANSWER-C
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 - CORRECT ANSWER-C
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 - CORRECT ANSWER-A
,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 - CORRECT ANSWER-D
The test material for a penetrant test (PT) must be:
Select one:
a. ferrous
b. non-ferrous
c. porous
d. non-porous - CORRECT ANSWER-D
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 - CORRECT ANSWER-A
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 - CORRECT ANSWER-B
Which of the following is a single pass boiler?
Select one:
a. HRT
b. Scotch marine
c. Packaged firetube
d. Vertical firetube - CORRECT ANSWER-D
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 - CORRECT ANSWER-D
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 - CORRECT ANSWER-C
, 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 - CORRECT ANSWER-A
Which of the following emissions is NOT considered a gaseous pollutant?
Select one:
a. Nitrogen
b. Methane
c. Sulphur oxides
d. Carbon monoxide - CORRECT ANSWER-A
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 - CORRECT ANSWER-B
A typical application of forged steel in a power plant is:
Select one:
a. Ash handling systems
