TEXAS PLUMBING JOURNEYMAN
EXAMINATION ACTUAL EXAM COMPLETE
QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR JUST
RELEASED
1.
A plumber installs a horizontal drainage pipe carrying
wastewater from several fixtures. Which minimum
condition best promotes proper self-scouring action within
the piping system?
A. Excessive oversizing of pipe
B. Proper slope according to code requirements
C. Elimination of cleanouts
D. Increased vent pipe diameter
Answer: B
Rationale: Proper slope maintains flow velocity and
minimizes solids accumulation.
2.
,A building owner reports frequent siphoning of sink traps
after nearby fixtures discharge large volumes of water.
What is the most likely cause?
A. Excessive water pressure
B. Improper venting arrangement
C. Oversized water heater
D. Defective shutoff valves
Answer: B
Rationale: Inadequate venting creates pressure
fluctuations that can empty traps.
3.
A plumbing system contains a direct connection between
potable water and a potential contamination source. What
hazard exists?
A. Water hammer
B. Cross-connection contamination
C. Thermal expansion
D. Pipe corrosion
Answer: B
Rationale: Cross-connections may allow contaminants to
enter drinking water.
,4.
A plumber must determine the amount of water demand
expected within a building. Which code-based method is
commonly used?
A. Fixture unit calculations
B. Pipe color identification
C. Vent terminal count
D. Cleanout spacing
Answer: A
Rationale: Fixture units estimate probable water demand.
5.
When testing newly installed drainage piping, the primary
purpose is to verify:
A. Decorative appearance
B. Leak-free performance
C. Pipe labeling accuracy
D. Water pressure increase
Answer: B
Rationale: Testing confirms system integrity before
operation.
, 6.
A water heater temperature setting is excessively high.
Which risk increases significantly?
A. Reduced pressure losses
B. Scald injuries to occupants
C. Improved fixture operation
D. Larger vent capacity
Answer: B
Rationale: Excessive temperatures create burn hazards.
7.
A cleanout is primarily installed to:
A. Increase water pressure
B. Improve fixture appearance
C. Provide maintenance access for drainage piping
D. Support vent piping
Answer: C
Rationale: Cleanouts facilitate inspection and blockage
removal.
8.
EXAMINATION ACTUAL EXAM COMPLETE
QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR JUST
RELEASED
1.
A plumber installs a horizontal drainage pipe carrying
wastewater from several fixtures. Which minimum
condition best promotes proper self-scouring action within
the piping system?
A. Excessive oversizing of pipe
B. Proper slope according to code requirements
C. Elimination of cleanouts
D. Increased vent pipe diameter
Answer: B
Rationale: Proper slope maintains flow velocity and
minimizes solids accumulation.
2.
,A building owner reports frequent siphoning of sink traps
after nearby fixtures discharge large volumes of water.
What is the most likely cause?
A. Excessive water pressure
B. Improper venting arrangement
C. Oversized water heater
D. Defective shutoff valves
Answer: B
Rationale: Inadequate venting creates pressure
fluctuations that can empty traps.
3.
A plumbing system contains a direct connection between
potable water and a potential contamination source. What
hazard exists?
A. Water hammer
B. Cross-connection contamination
C. Thermal expansion
D. Pipe corrosion
Answer: B
Rationale: Cross-connections may allow contaminants to
enter drinking water.
,4.
A plumber must determine the amount of water demand
expected within a building. Which code-based method is
commonly used?
A. Fixture unit calculations
B. Pipe color identification
C. Vent terminal count
D. Cleanout spacing
Answer: A
Rationale: Fixture units estimate probable water demand.
5.
When testing newly installed drainage piping, the primary
purpose is to verify:
A. Decorative appearance
B. Leak-free performance
C. Pipe labeling accuracy
D. Water pressure increase
Answer: B
Rationale: Testing confirms system integrity before
operation.
, 6.
A water heater temperature setting is excessively high.
Which risk increases significantly?
A. Reduced pressure losses
B. Scald injuries to occupants
C. Improved fixture operation
D. Larger vent capacity
Answer: B
Rationale: Excessive temperatures create burn hazards.
7.
A cleanout is primarily installed to:
A. Increase water pressure
B. Improve fixture appearance
C. Provide maintenance access for drainage piping
D. Support vent piping
Answer: C
Rationale: Cleanouts facilitate inspection and blockage
removal.
8.
