Alberta Plumber Apprenticeship Exam
Practice Questions And Correct Answers
1. Which of the following is the standard material for residential
water supply piping in Alberta?
A. Cast iron
B. Copper
C. PEX
D. Galvanized steel
PEX is widely used in residential plumbing due to its flexibility, corrosion
resistance, and ease of installation.
2. The primary purpose of a trap in a plumbing system is to:
A. Increase water pressure
B. Prevent sewer gases from entering the building
C. Filter debris
D. Control water temperature
A trap holds a small amount of water that blocks sewer gases from
entering occupied spaces.
3. What is the minimum slope required for a 3-inch horizontal drain line
according to the Alberta Plumbing Code?
A. 1/16 inch per foot
B. 1/8 inch per foot
C. 1/4 inch per foot
D. 1/2 inch per foot
Proper slope ensures adequate drainage and prevents blockages.
4. When soldering copper pipes, it is essential to:
A. Apply flux only after heating
B. Clean the pipe and fitting, apply flux, and heat evenly
C. Heat one side of the fitting only
, D. Use water to cool immediately after soldering
Cleaning removes oxidation, flux promotes solder flow, and even heating
ensures a leak-free joint.
5. The primary function of a vent pipe is to:
A. Increase water pressure
B. Allow air to enter the drainage system to prevent siphoning
C. Carry sewage to the main line
D. Filter water entering the system
Vents maintain proper pressure and allow waste to flow smoothly.
6. Which type of valve is typically used to control water flow to a
fixture?
A. Gate valve
B. Globe valve
C. Angle stop valve
D. Butterfly valve
Angle stop valves provide localized control at fixtures for maintenance
and repair.
7. What is the maximum allowable temperature for domestic hot water
supplied to a fixture?
A. 45°C
B. 55°C
C. 60°C
D. 70°C
This prevents scalding while maintaining effective bacterial control.
8. When joining PVC pipes, the primer is used to:
A. Seal the pipe
B. Clean and soften the surface for solvent cement
C. Lubricate the fitting
D. Protect against corrosion
Primer ensures the solvent cement properly fuses the pipe and fitting.
, 9. The term "backflow" refers to:
A. Water leaking from a pipe
B. Water flowing in the opposite direction, potentially
contaminating potable water
C. Water pressure fluctuations
D. Air entering the water system
Backflow can introduce contaminants into a drinking water system, so
prevention devices are critical.
10. Which of the following is a common backflow prevention
device?
A. Ball valve
B. Check valve
C. Double check valve assembly (DCVA)
D. Gate valve
DCVAs prevent water from flowing back into the potable water system
under normal conditions.
11. The minimum size of a water service line for a single-family
dwelling is usually:
A. 15 mm
B. 20 mm
C. 25 mm
D. 40 mm
This ensures adequate flow and pressure for typical residential fixtures.
12. What is the purpose of a pressure-reducing valve (PRV)?
A. Increase pressure
B. Reduce excessive incoming water pressure to safe levels
C. Control water temperature
D. Prevent backflow
High pressure can damage plumbing; PRVs protect pipes and fixtures.
13. What is the standard pipe material for underground drainage in
Alberta?
Practice Questions And Correct Answers
1. Which of the following is the standard material for residential
water supply piping in Alberta?
A. Cast iron
B. Copper
C. PEX
D. Galvanized steel
PEX is widely used in residential plumbing due to its flexibility, corrosion
resistance, and ease of installation.
2. The primary purpose of a trap in a plumbing system is to:
A. Increase water pressure
B. Prevent sewer gases from entering the building
C. Filter debris
D. Control water temperature
A trap holds a small amount of water that blocks sewer gases from
entering occupied spaces.
3. What is the minimum slope required for a 3-inch horizontal drain line
according to the Alberta Plumbing Code?
A. 1/16 inch per foot
B. 1/8 inch per foot
C. 1/4 inch per foot
D. 1/2 inch per foot
Proper slope ensures adequate drainage and prevents blockages.
4. When soldering copper pipes, it is essential to:
A. Apply flux only after heating
B. Clean the pipe and fitting, apply flux, and heat evenly
C. Heat one side of the fitting only
, D. Use water to cool immediately after soldering
Cleaning removes oxidation, flux promotes solder flow, and even heating
ensures a leak-free joint.
5. The primary function of a vent pipe is to:
A. Increase water pressure
B. Allow air to enter the drainage system to prevent siphoning
C. Carry sewage to the main line
D. Filter water entering the system
Vents maintain proper pressure and allow waste to flow smoothly.
6. Which type of valve is typically used to control water flow to a
fixture?
A. Gate valve
B. Globe valve
C. Angle stop valve
D. Butterfly valve
Angle stop valves provide localized control at fixtures for maintenance
and repair.
7. What is the maximum allowable temperature for domestic hot water
supplied to a fixture?
A. 45°C
B. 55°C
C. 60°C
D. 70°C
This prevents scalding while maintaining effective bacterial control.
8. When joining PVC pipes, the primer is used to:
A. Seal the pipe
B. Clean and soften the surface for solvent cement
C. Lubricate the fitting
D. Protect against corrosion
Primer ensures the solvent cement properly fuses the pipe and fitting.
, 9. The term "backflow" refers to:
A. Water leaking from a pipe
B. Water flowing in the opposite direction, potentially
contaminating potable water
C. Water pressure fluctuations
D. Air entering the water system
Backflow can introduce contaminants into a drinking water system, so
prevention devices are critical.
10. Which of the following is a common backflow prevention
device?
A. Ball valve
B. Check valve
C. Double check valve assembly (DCVA)
D. Gate valve
DCVAs prevent water from flowing back into the potable water system
under normal conditions.
11. The minimum size of a water service line for a single-family
dwelling is usually:
A. 15 mm
B. 20 mm
C. 25 mm
D. 40 mm
This ensures adequate flow and pressure for typical residential fixtures.
12. What is the purpose of a pressure-reducing valve (PRV)?
A. Increase pressure
B. Reduce excessive incoming water pressure to safe levels
C. Control water temperature
D. Prevent backflow
High pressure can damage plumbing; PRVs protect pipes and fixtures.
13. What is the standard pipe material for underground drainage in
Alberta?
