Power Engineering 4A Exam With
Latest Updated Solutions 2026| All
Correct
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 - Ans--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 - Ans--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 - Ans--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 - Ans--D
The test material for a penetrant test (PT) must be:
Select one:
a. ferrous
b. non-ferrous
c. porous
d. non-porous - Ans--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 - Ans--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 - Ans--B
Which of the following is a single pass boiler?
Select one:
a. HRT
b. Scotch marine
c. Packaged firetube
d. Vertical firetube - Ans--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 - Ans--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 - Ans--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 - Ans--A
Which of the following emissions is NOT considered a gaseous pollutant?
Select one:
a. Nitrogen
b. Methane
c. Sulphur oxides
d. Carbon monoxide - Ans--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 - Ans--B
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 - Ans--D
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 - Ans--A
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 - Ans--D
"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 - Ans--C
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 - Ans--B
Current transformers are:
Select one:
a. Voltage step-up transformers
b. K-type transformers
c. High power factor transformers
d. Current step-up transformers - Ans--A
Latest Updated Solutions 2026| All
Correct
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 - Ans--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 - Ans--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 - Ans--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 - Ans--D
The test material for a penetrant test (PT) must be:
Select one:
a. ferrous
b. non-ferrous
c. porous
d. non-porous - Ans--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 - Ans--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 - Ans--B
Which of the following is a single pass boiler?
Select one:
a. HRT
b. Scotch marine
c. Packaged firetube
d. Vertical firetube - Ans--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 - Ans--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 - Ans--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 - Ans--A
Which of the following emissions is NOT considered a gaseous pollutant?
Select one:
a. Nitrogen
b. Methane
c. Sulphur oxides
d. Carbon monoxide - Ans--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 - Ans--B
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 - Ans--D
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 - Ans--A
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 - Ans--D
"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 - Ans--C
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 - Ans--B
Current transformers are:
Select one:
a. Voltage step-up transformers
b. K-type transformers
c. High power factor transformers
d. Current step-up transformers - Ans--A
