TEXAS PUMP INSTALLER EXAM PREP: 200 EXPERT-VERIFIED
QUESTIONS WITH ANSWERS & DETAILED RATIONALES |
COMPLETE TDLR COVERAGE | LATEST
1. Which Texas agency is responsible for regulating and licensing water
well pump installers?
A. Texas Commission on Environmental Quality (TCEQ)
B. Texas Water Development Board (TWDB)
C. Texas Department of Licensing and Regulation (TDLR)
D. Texas Department of State Health Services (DSHS)
Answer: C
Rationale: The Texas Department of Licensing and Regulation (TDLR)
Water Well Driller and Pump Installer Program oversees all testing,
compliance, and enforcement for the industry in Texas.
2. What is the primary purpose of a pressure tank in a residential well
water system?
A. To increase the pump motor's horsepower
B. To store water and reduce frequent pump cycling
C. To chemically filter out surface contaminants
D. To automatically increase the maximum pressure rating of the pipe
Answer: B
Rationale: Pressure tanks maintain a reserve of pressurized water so
the pump does not have to start and stop every time a faucet is opened,
minimizing mechanical wear.
,3. Which type of pump is best suited for installation in deep water
wells exceeding 100 feet?
A. Shallow-well jet pump
B. Straight centrifugal pump
C. Submersible well pump
D. Diaphragm booster pump
Answer: C
Rationale: Submersible pumps push water upward from inside the well
and are highly efficient at moving water from depths greater than 100
feet.
4. Total Dynamic Head (TDH) is mathematically calculated as which of
the following?
A. Static lift minus the pipe diameter
B. Total system voltage divided by friction
C. Static head plus friction losses
D. The drawdown level multiplied by 2.31
Answer: C
Rationale: TDH accounts for the total equivalent height the water must
be lifted (static head) combined with the physical resistance created by
the interior walls of the pipe and fittings (friction loss).
5. Which protective electrical device prevents a submersible pump
from running dry when the well water level drops below the intake?
A. Pressure switch
B. Inline check valve
C. Low-water cutoff switch
D. Gate valve
Answer: C
Rationale: A low-water cutoff switch is a protective device that shuts off
,the pump to prevent it from running without water, which can cause
overheating and damage.
6. What is the static water level in a well?
A. The water level while the pump is running
B. The water level after one hour of pumping
C. The resting water level when the pump is off
D. The depth of the pump intake below the ground surface
Answer: C
Rationale: Static water level is the resting elevation of water inside the
well column before any pumping activity begins.
7. What is the typical voltage for a residential submersible pump
motor?
A. 120 V
B. 240 V
C. 480 V
D. 12 V
Answer: B
Rationale: Most residential well pumps are wired for 240 volts.
8. Which component protects the pump motor from overcurrent?
A. Foot valve
B. Pressure switch
C. Circuit breaker or fuse
D. Pitless adapter
Answer: C
Rationale: Overcurrent devices such as circuit breakers or fuses shut
power off to prevent damage to the motor from excessive current.
, 9. A pitless adapter allows for:
A. Horizontal drilling
B. A frost-proof connection below ground
C. Pump priming
D. Water sampling
Answer: B
Rationale: It provides a sanitary, freeze-proof connection to the well.
10. A pressure switch set at 40/60 psi turns the pump on at:
A. 30 psi
B. 40 psi
C. 50 psi
D. 60 psi
Answer: B
Rationale: The lower number (cut-in pressure) is the pressure at which
the pump turns on.
11. Which disinfectant is most commonly used to sanitize a new well?
A. Ozone
B. UV light
C. Chlorine bleach (sodium hypochlorite)
D. Hydrogen peroxide
Answer: C
Rationale: Chlorination is the standard method used to kill bacteria
before system start-up.
12. The minimum burial depth for underground electrical conduit in
Texas is typically:
A. 6 inches
B. 18 inches
QUESTIONS WITH ANSWERS & DETAILED RATIONALES |
COMPLETE TDLR COVERAGE | LATEST
1. Which Texas agency is responsible for regulating and licensing water
well pump installers?
A. Texas Commission on Environmental Quality (TCEQ)
B. Texas Water Development Board (TWDB)
C. Texas Department of Licensing and Regulation (TDLR)
D. Texas Department of State Health Services (DSHS)
Answer: C
Rationale: The Texas Department of Licensing and Regulation (TDLR)
Water Well Driller and Pump Installer Program oversees all testing,
compliance, and enforcement for the industry in Texas.
2. What is the primary purpose of a pressure tank in a residential well
water system?
A. To increase the pump motor's horsepower
B. To store water and reduce frequent pump cycling
C. To chemically filter out surface contaminants
D. To automatically increase the maximum pressure rating of the pipe
Answer: B
Rationale: Pressure tanks maintain a reserve of pressurized water so
the pump does not have to start and stop every time a faucet is opened,
minimizing mechanical wear.
,3. Which type of pump is best suited for installation in deep water
wells exceeding 100 feet?
A. Shallow-well jet pump
B. Straight centrifugal pump
C. Submersible well pump
D. Diaphragm booster pump
Answer: C
Rationale: Submersible pumps push water upward from inside the well
and are highly efficient at moving water from depths greater than 100
feet.
4. Total Dynamic Head (TDH) is mathematically calculated as which of
the following?
A. Static lift minus the pipe diameter
B. Total system voltage divided by friction
C. Static head plus friction losses
D. The drawdown level multiplied by 2.31
Answer: C
Rationale: TDH accounts for the total equivalent height the water must
be lifted (static head) combined with the physical resistance created by
the interior walls of the pipe and fittings (friction loss).
5. Which protective electrical device prevents a submersible pump
from running dry when the well water level drops below the intake?
A. Pressure switch
B. Inline check valve
C. Low-water cutoff switch
D. Gate valve
Answer: C
Rationale: A low-water cutoff switch is a protective device that shuts off
,the pump to prevent it from running without water, which can cause
overheating and damage.
6. What is the static water level in a well?
A. The water level while the pump is running
B. The water level after one hour of pumping
C. The resting water level when the pump is off
D. The depth of the pump intake below the ground surface
Answer: C
Rationale: Static water level is the resting elevation of water inside the
well column before any pumping activity begins.
7. What is the typical voltage for a residential submersible pump
motor?
A. 120 V
B. 240 V
C. 480 V
D. 12 V
Answer: B
Rationale: Most residential well pumps are wired for 240 volts.
8. Which component protects the pump motor from overcurrent?
A. Foot valve
B. Pressure switch
C. Circuit breaker or fuse
D. Pitless adapter
Answer: C
Rationale: Overcurrent devices such as circuit breakers or fuses shut
power off to prevent damage to the motor from excessive current.
, 9. A pitless adapter allows for:
A. Horizontal drilling
B. A frost-proof connection below ground
C. Pump priming
D. Water sampling
Answer: B
Rationale: It provides a sanitary, freeze-proof connection to the well.
10. A pressure switch set at 40/60 psi turns the pump on at:
A. 30 psi
B. 40 psi
C. 50 psi
D. 60 psi
Answer: B
Rationale: The lower number (cut-in pressure) is the pressure at which
the pump turns on.
11. Which disinfectant is most commonly used to sanitize a new well?
A. Ozone
B. UV light
C. Chlorine bleach (sodium hypochlorite)
D. Hydrogen peroxide
Answer: C
Rationale: Chlorination is the standard method used to kill bacteria
before system start-up.
12. The minimum burial depth for underground electrical conduit in
Texas is typically:
A. 6 inches
B. 18 inches
