Texas Water Well Pump Installer License
Practice Exam | Questions And Answers [ plus
Rationales] | Qs & Ans 2026/27 | Graded A
1. What is the primary purpose of a pressure tank in a residential water
well system?
A. Filter bacteria
B. Increase water temperature
C. Store pressurized water and reduce pump cycling
D. Remove iron from water
Rationale: Pressure tanks maintain system pressure and reduce the frequency
of pump starts and stops.
2. Which type of pump is most commonly used in deep residential wells?
A. Booster pump
B. Jet pump
C. Centrifugal surface pump
D. Submersible pump
Rationale: Submersible pumps are designed to operate underwater and are
efficient for deep well applications.
3. What is the function of a pressure switch?
,A. Chlorinate water
B. Measure water flow
C. Control pump operation based on pressure settings
D. Filter sediment
Rationale: Pressure switches automatically start and stop pumps according to
preset pressure levels.
4. Which device prevents water from flowing backward in a well system?
A. Pressure gauge
B. Relief valve
C. Foot clamp
D. Check valve
Rationale: Check valves prevent reverse flow and help maintain system
pressure.
5. What does PSI stand for?
A. Pressure system indicator
B. Pump speed index
C. Pounds per square inch
D. Pipe system interval
Rationale: PSI is the standard unit used to measure water pressure.
,6. What is “drawdown” in a well system?
A. Increase in pressure during pumping
B. Pump discharge capacity
C. Difference between static and pumping water levels
D. Volume of water stored in the pressure tank
Rationale: Drawdown measures how much the water level drops during
pumping.
7. Which condition may indicate a waterlogged pressure tank?
A. Constant high pressure
B. Reduced electrical usage
C. Frequent pump cycling
D. Increased water clarity
Rationale: Waterlogged tanks lose air cushion capacity, causing rapid pump
cycling.
8. What is the purpose of a well seal?
A. Improve pump speed
B. Increase flow rate
C. Prevent contaminants from entering the well
D. Raise water temperature
Rationale: Well seals protect groundwater from contamination at the surface.
, 9. Which electrical instrument measures current draw?
A. Pressure gauge
B. Voltmeter
C. Clamp meter
D. Water level indicator
Rationale: Clamp meters measure amperage without disconnecting wiring.
10. Why is grounding important in pump installations?
A. Increase flow rate
B. Lower water temperature
C. Reduce electrical shock hazards
D. Improve water quality
Rationale: Proper grounding protects people and equipment from electrical
faults.
11. What is the purpose of a foot valve in a jet pump system?
A. Increase pressure
B. Measure flow
C. Maintain pump prime by preventing backflow
D. Remove sediment
Practice Exam | Questions And Answers [ plus
Rationales] | Qs & Ans 2026/27 | Graded A
1. What is the primary purpose of a pressure tank in a residential water
well system?
A. Filter bacteria
B. Increase water temperature
C. Store pressurized water and reduce pump cycling
D. Remove iron from water
Rationale: Pressure tanks maintain system pressure and reduce the frequency
of pump starts and stops.
2. Which type of pump is most commonly used in deep residential wells?
A. Booster pump
B. Jet pump
C. Centrifugal surface pump
D. Submersible pump
Rationale: Submersible pumps are designed to operate underwater and are
efficient for deep well applications.
3. What is the function of a pressure switch?
,A. Chlorinate water
B. Measure water flow
C. Control pump operation based on pressure settings
D. Filter sediment
Rationale: Pressure switches automatically start and stop pumps according to
preset pressure levels.
4. Which device prevents water from flowing backward in a well system?
A. Pressure gauge
B. Relief valve
C. Foot clamp
D. Check valve
Rationale: Check valves prevent reverse flow and help maintain system
pressure.
5. What does PSI stand for?
A. Pressure system indicator
B. Pump speed index
C. Pounds per square inch
D. Pipe system interval
Rationale: PSI is the standard unit used to measure water pressure.
,6. What is “drawdown” in a well system?
A. Increase in pressure during pumping
B. Pump discharge capacity
C. Difference between static and pumping water levels
D. Volume of water stored in the pressure tank
Rationale: Drawdown measures how much the water level drops during
pumping.
7. Which condition may indicate a waterlogged pressure tank?
A. Constant high pressure
B. Reduced electrical usage
C. Frequent pump cycling
D. Increased water clarity
Rationale: Waterlogged tanks lose air cushion capacity, causing rapid pump
cycling.
8. What is the purpose of a well seal?
A. Improve pump speed
B. Increase flow rate
C. Prevent contaminants from entering the well
D. Raise water temperature
Rationale: Well seals protect groundwater from contamination at the surface.
, 9. Which electrical instrument measures current draw?
A. Pressure gauge
B. Voltmeter
C. Clamp meter
D. Water level indicator
Rationale: Clamp meters measure amperage without disconnecting wiring.
10. Why is grounding important in pump installations?
A. Increase flow rate
B. Lower water temperature
C. Reduce electrical shock hazards
D. Improve water quality
Rationale: Proper grounding protects people and equipment from electrical
faults.
11. What is the purpose of a foot valve in a jet pump system?
A. Increase pressure
B. Measure flow
C. Maintain pump prime by preventing backflow
D. Remove sediment
