REF-B Power Engineering Concepts Exam Review 2026 | Verified
Q&A | Graded A+
1. What term describes heat that results in a temperature change of a substance
without altering its phase?
saturated
sensible
specific
superheat
2. Oil with a experiences large changes in viscosity due to temperature
fluctuations.
low viscosity index
high viscosity index
high flash point
low neutralization number
low fire point
3. Describe the significance of connecting the welding electrode to the
negative terminal in straight polarity welding.
Connecting to a good ground is essential for safety, but does not
affect the welding process.
Connecting the electrode to the positive terminal enhances the
welding speed.
Using either terminal provides the same welding results regardless of
polarity.
, Connecting the welding electrode to the negative terminal allows
for deeper penetration and better heat control during the welding
process.
4. What is the expected temperature of the evaporator when chilled water at
2°C circulates through it?
at 2°C
slightly higher than 2°C
unknown
less than 2°C
much higher than 2°C
5. Which of these is the 'Boiler, Pressure Vessel and Pressure Piping Code'?
CSA B52
ASME BPV-PPC
ASME Section I
CSA B51
6. Heat that causes an increase in temperature is called heat. Choose one
answer.
Radiant
Convective
Conductive
Latent
Sensible
,7. Particles that make up molecules are called
organisms.
cells.
atoms.
membranes.
8. All boiler fittings not properly or clearly identified should be:
Rejected
Sent back to the manufacturer for proper identification
Used for low-pressure services only
Acceptable for most powerhouse applications
First approved for use by the boiler inspector
9. The purpose of the Safety Codes Act and Engineer's Regulations is to
Ensure optimum performance of any boiler operating
Help control the power plant personnel
Ensure proper examinations are conducted
Ensure safe installation and operation of power plants
Help plants operating at high efficiency
10. What does a low viscosity index indicate about an oil's viscosity with respect
to temperature changes?
It indicates that the oil maintains a consistent viscosity despite
temperature changes.
It indicates that the oil has a high carbon residue.
, It indicates that the oil's viscosity changes significantly with little
temperature change.
It indicates that the oil has a high pour point.
11. Which method of weld testing is described as quick, easy, and inexpensive?
dye penetrant method
visual method
fluorescent penetrant method
ultrasonic method
12. A slight water leak past the packing around a pump shaft
Should be eliminated.
Means the shaft is worn.
Cannot be eliminated.
Is essential for proper operation.
13. If a technician uses acetylene at 30 kPa and oxygen at 300 kPa for cutting
steel plates, what potential issues might arise?
Reduced material waste during cutting.
No issues, as the pressures are within acceptable limits.
Inconsistent cutting quality and increased risk of accidents.
Improved cutting speed and efficiency.
14. If a pump and motor shop experiences frequent breakdowns, what steps
should be taken to assess potential misalignment issues?
Replace the pump with a new model without inspection.
Q&A | Graded A+
1. What term describes heat that results in a temperature change of a substance
without altering its phase?
saturated
sensible
specific
superheat
2. Oil with a experiences large changes in viscosity due to temperature
fluctuations.
low viscosity index
high viscosity index
high flash point
low neutralization number
low fire point
3. Describe the significance of connecting the welding electrode to the
negative terminal in straight polarity welding.
Connecting to a good ground is essential for safety, but does not
affect the welding process.
Connecting the electrode to the positive terminal enhances the
welding speed.
Using either terminal provides the same welding results regardless of
polarity.
, Connecting the welding electrode to the negative terminal allows
for deeper penetration and better heat control during the welding
process.
4. What is the expected temperature of the evaporator when chilled water at
2°C circulates through it?
at 2°C
slightly higher than 2°C
unknown
less than 2°C
much higher than 2°C
5. Which of these is the 'Boiler, Pressure Vessel and Pressure Piping Code'?
CSA B52
ASME BPV-PPC
ASME Section I
CSA B51
6. Heat that causes an increase in temperature is called heat. Choose one
answer.
Radiant
Convective
Conductive
Latent
Sensible
,7. Particles that make up molecules are called
organisms.
cells.
atoms.
membranes.
8. All boiler fittings not properly or clearly identified should be:
Rejected
Sent back to the manufacturer for proper identification
Used for low-pressure services only
Acceptable for most powerhouse applications
First approved for use by the boiler inspector
9. The purpose of the Safety Codes Act and Engineer's Regulations is to
Ensure optimum performance of any boiler operating
Help control the power plant personnel
Ensure proper examinations are conducted
Ensure safe installation and operation of power plants
Help plants operating at high efficiency
10. What does a low viscosity index indicate about an oil's viscosity with respect
to temperature changes?
It indicates that the oil maintains a consistent viscosity despite
temperature changes.
It indicates that the oil has a high carbon residue.
, It indicates that the oil's viscosity changes significantly with little
temperature change.
It indicates that the oil has a high pour point.
11. Which method of weld testing is described as quick, easy, and inexpensive?
dye penetrant method
visual method
fluorescent penetrant method
ultrasonic method
12. A slight water leak past the packing around a pump shaft
Should be eliminated.
Means the shaft is worn.
Cannot be eliminated.
Is essential for proper operation.
13. If a technician uses acetylene at 30 kPa and oxygen at 300 kPa for cutting
steel plates, what potential issues might arise?
Reduced material waste during cutting.
No issues, as the pressures are within acceptable limits.
Inconsistent cutting quality and increased risk of accidents.
Improved cutting speed and efficiency.
14. If a pump and motor shop experiences frequent breakdowns, what steps
should be taken to assess potential misalignment issues?
Replace the pump with a new model without inspection.
