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 water well system?
A. To chlorinate water
B. To increase water temperature
C. To maintain water pressure and reduce pump cycling
D. To filter sediment
Rationale: Pressure tanks store pressurized water and reduce frequent pump
starts, extending pump life.
2. Which component prevents backflow into a well system?
A. Pressure switch
B. Foot valve
C. Check valve
D. Pressure gauge
Rationale: A check valve allows water flow in one direction and prevents
contaminated water from flowing backward.
3. What is the minimum separation distance generally required between a
water well and a septic tank in Texas?
,A. 10 feet
B. 25 feet
C. 50 feet
D. 100 feet
Rationale: Texas well regulations commonly require at least 50 feet
separation from septic tanks to reduce contamination risk.
4. Which type of pump is commonly used for deep wells?
A. Jet pump
B. Booster pump
C. Centrifugal pump
D. Submersible pump
Rationale: Submersible pumps are designed to operate underwater and are
effective for deep wells.
5. What electrical device controls pump start and stop operations based on
pressure?
A. Circuit breaker
B. Transformer
C. Pressure switch
D. Relay box
Rationale: Pressure switches activate the pump at cut-in pressure and stop it
at cut-out pressure.
,6. What is “drawdown” in a water well?
A. Pump voltage loss
B. Difference between static and pumping water levels
C. Sediment accumulation
D. Water storage capacity
Rationale: Drawdown measures how far the water level drops during
pumping.
7. Which wire size factor is most important for submersible pump
installation?
A. Pipe color
B. Pump diameter
C. Voltage drop
D. Water temperature
Rationale: Proper wire sizing minimizes voltage drop and prevents motor
damage.
8. What is the purpose of a well seal?
A. Increase water pressure
B. Reduce electrical load
C. Prevent contaminants from entering the well
D. Filter bacteria
, Rationale: Well seals close the top of the casing to protect groundwater
quality.
9. Which material is commonly used for well casing?
A. Copper
B. Aluminum
C. Steel or PVC
D. Brass
Rationale: Steel and PVC resist corrosion and provide structural support.
10. A pump that starts and stops too frequently is said to be:
A. Primed
B. Overloaded
C. Short cycling
D. Cavitating
Rationale: Short cycling often indicates pressure tank or switch problems.
11. What tool measures electrical current in a pump circuit?
A. Voltmeter
B. Ohmmeter
C. Pressure gauge
D. Clamp meter
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 water well system?
A. To chlorinate water
B. To increase water temperature
C. To maintain water pressure and reduce pump cycling
D. To filter sediment
Rationale: Pressure tanks store pressurized water and reduce frequent pump
starts, extending pump life.
2. Which component prevents backflow into a well system?
A. Pressure switch
B. Foot valve
C. Check valve
D. Pressure gauge
Rationale: A check valve allows water flow in one direction and prevents
contaminated water from flowing backward.
3. What is the minimum separation distance generally required between a
water well and a septic tank in Texas?
,A. 10 feet
B. 25 feet
C. 50 feet
D. 100 feet
Rationale: Texas well regulations commonly require at least 50 feet
separation from septic tanks to reduce contamination risk.
4. Which type of pump is commonly used for deep wells?
A. Jet pump
B. Booster pump
C. Centrifugal pump
D. Submersible pump
Rationale: Submersible pumps are designed to operate underwater and are
effective for deep wells.
5. What electrical device controls pump start and stop operations based on
pressure?
A. Circuit breaker
B. Transformer
C. Pressure switch
D. Relay box
Rationale: Pressure switches activate the pump at cut-in pressure and stop it
at cut-out pressure.
,6. What is “drawdown” in a water well?
A. Pump voltage loss
B. Difference between static and pumping water levels
C. Sediment accumulation
D. Water storage capacity
Rationale: Drawdown measures how far the water level drops during
pumping.
7. Which wire size factor is most important for submersible pump
installation?
A. Pipe color
B. Pump diameter
C. Voltage drop
D. Water temperature
Rationale: Proper wire sizing minimizes voltage drop and prevents motor
damage.
8. What is the purpose of a well seal?
A. Increase water pressure
B. Reduce electrical load
C. Prevent contaminants from entering the well
D. Filter bacteria
, Rationale: Well seals close the top of the casing to protect groundwater
quality.
9. Which material is commonly used for well casing?
A. Copper
B. Aluminum
C. Steel or PVC
D. Brass
Rationale: Steel and PVC resist corrosion and provide structural support.
10. A pump that starts and stops too frequently is said to be:
A. Primed
B. Overloaded
C. Short cycling
D. Cavitating
Rationale: Short cycling often indicates pressure tank or switch problems.
11. What tool measures electrical current in a pump circuit?
A. Voltmeter
B. Ohmmeter
C. Pressure gauge
D. Clamp meter
