Water Supply
CHAPTER and
12- Plumbing
J&B Practice
DRIVER/ OPERATOR WATER SUPPLY AND
Test
PLUMBING PRACTICE TEST SOLVED QUESTIONS WITH
CORRECT APPROVED ANSWERS WITH COMPLETE
SOLUTION |ALREADY GRADED A+ |2026 LATEST UPLOAD
1. A riser is a ______ pipe which supplies the sprinkler system.
lateral
horizontal
secondary
vertical
2. If a plumbing system experiences a malfunction that causes the water heater to
overheat, what role does the Temperature and Pressure Relief (T&P) valve play in this
scenario?
It will automatically shut off the water supply to the heater.
It will release water to lower the temperature and pressure, preventing
damage.
It will divert water to a secondary storage tank.
It will increase the pressure to stabilize the system.
3. What is the definition of potable water according to the Public Health Service
Drinking Water Standards?
Water that contains high levels of impurities but is still safe to drink
Water that is free from impurities that can cause disease and meets specific
quality standards
Water that is treated with chemicals to enhance its taste
Water that is sourced from natural springs without any treatment
4. Explain the role of a water heater in maintaining the efficiency of a potable hot water
,distribution system.
It ensures that water is heated to a safe temperature for consumption.
It prevents the contamination of nonpotable water.
It regulates the pressure of the water supply.
It eliminates the need for plumbing maintenance.
,5. Explain how a meter contributes to the efficiency of water supply systems.
It prevents leaks in plumbing systems
It helps in monitoring and managing water consumption
It ensures the water is potable
It controls the temperature of the water
6. In a classification of plumbing fixtures, " ___ " applies to plumbing fixtures in
residences and apartments, to private bathrooms in hotels and hospitals, to
restrooms in commercial establishments for restricted use, single fixture or group of
single fixtures and to similar installations where the fixtures are intended for the use of
a family or an individual.
Private
Unit
Confined Space
Public
7. ______________________________ is water heated between 85 degrees Fahrenheit and 120 degrees
Fahrenheit.
Hot water
Warm water
Tempered Water
Chilled water
8. A device that moves water from your basement to the outside of your home
Sump Pump
Piston Pump
Centrifugal Pump
Gear Pump
9. What is the primary function of a temperature relief valve in plumbing systems?
To regulate water pressure in pipes
, To discharge water automatically at a set temperature
To filter impurities from potable water
To control the flow of hot water in circulation systems
10. A building has a system of pipes and drains installed for the purpose of distribution
of potable drinking water and the removal of waterborne wastes
Venting system
Water system
Drainage system
Plumbing system
11. A public water system (PWS) is a supply of piped water for human consumption that
has at least ___ service connections, or serves ___ or more persons 60 or more days
per year.
15; 25
1; 10
25; 15
250; 250
12. A water supply pipe, which extends vertically to one full story or more to convey
water into pipe branches or plumbing fixtures.
Stack
Riser
Branch interval
Water distribution pipe
13. What is the maximum allowable lead composition in a solder classifieds as lead free?
0%
0.2%
2%
8%
CHAPTER and
12- Plumbing
J&B Practice
DRIVER/ OPERATOR WATER SUPPLY AND
Test
PLUMBING PRACTICE TEST SOLVED QUESTIONS WITH
CORRECT APPROVED ANSWERS WITH COMPLETE
SOLUTION |ALREADY GRADED A+ |2026 LATEST UPLOAD
1. A riser is a ______ pipe which supplies the sprinkler system.
lateral
horizontal
secondary
vertical
2. If a plumbing system experiences a malfunction that causes the water heater to
overheat, what role does the Temperature and Pressure Relief (T&P) valve play in this
scenario?
It will automatically shut off the water supply to the heater.
It will release water to lower the temperature and pressure, preventing
damage.
It will divert water to a secondary storage tank.
It will increase the pressure to stabilize the system.
3. What is the definition of potable water according to the Public Health Service
Drinking Water Standards?
Water that contains high levels of impurities but is still safe to drink
Water that is free from impurities that can cause disease and meets specific
quality standards
Water that is treated with chemicals to enhance its taste
Water that is sourced from natural springs without any treatment
4. Explain the role of a water heater in maintaining the efficiency of a potable hot water
,distribution system.
It ensures that water is heated to a safe temperature for consumption.
It prevents the contamination of nonpotable water.
It regulates the pressure of the water supply.
It eliminates the need for plumbing maintenance.
,5. Explain how a meter contributes to the efficiency of water supply systems.
It prevents leaks in plumbing systems
It helps in monitoring and managing water consumption
It ensures the water is potable
It controls the temperature of the water
6. In a classification of plumbing fixtures, " ___ " applies to plumbing fixtures in
residences and apartments, to private bathrooms in hotels and hospitals, to
restrooms in commercial establishments for restricted use, single fixture or group of
single fixtures and to similar installations where the fixtures are intended for the use of
a family or an individual.
Private
Unit
Confined Space
Public
7. ______________________________ is water heated between 85 degrees Fahrenheit and 120 degrees
Fahrenheit.
Hot water
Warm water
Tempered Water
Chilled water
8. A device that moves water from your basement to the outside of your home
Sump Pump
Piston Pump
Centrifugal Pump
Gear Pump
9. What is the primary function of a temperature relief valve in plumbing systems?
To regulate water pressure in pipes
, To discharge water automatically at a set temperature
To filter impurities from potable water
To control the flow of hot water in circulation systems
10. A building has a system of pipes and drains installed for the purpose of distribution
of potable drinking water and the removal of waterborne wastes
Venting system
Water system
Drainage system
Plumbing system
11. A public water system (PWS) is a supply of piped water for human consumption that
has at least ___ service connections, or serves ___ or more persons 60 or more days
per year.
15; 25
1; 10
25; 15
250; 250
12. A water supply pipe, which extends vertically to one full story or more to convey
water into pipe branches or plumbing fixtures.
Stack
Riser
Branch interval
Water distribution pipe
13. What is the maximum allowable lead composition in a solder classifieds as lead free?
0%
0.2%
2%
8%
