The TX General Pump Installer Practice Exam is designed for professionals installing and servicing pumps in Texas. Topics include pump installation, system design, maintenance, and regulatory compliance. Candidates are tested on their ability to install and repair pumps in residential, agricultural...
1. Which type of pump is most commonly used for high-volume, low-pressure
applications?
● A) Centrifugal pump
● B) Submersible pump
● C) Jet pump
● D) Positive displacement pump
● Answer: A) Centrifugal pump
● Explanation: Centrifugal pumps are designed to handle high-volume, low-pressure
applications due to their ability to generate high flow rates efficiently.
2. What is the main principle behind the operation of a centrifugal pump?
● A) Displacement
● B) Centrifugal force
● C) Reciprocation
● D) Suction
● Answer: B) Centrifugal force
● Explanation: Centrifugal pumps operate by converting rotational kinetic energy to
hydrodynamic energy of fluid flow through the use of centrifugal force.
3. Which type of pump is typically used in deep well applications?
● A) Centrifugal pump
● B) Submersible pump
● C) Jet pump
● D) Positive displacement pump
● Answer: B) Submersible pump
● Explanation: Submersible pumps are designed to operate while fully submerged in
water, making them suitable for deep well applications.
4. What type of pump uses an impeller to move fluid through the system?
● A) Centrifugal pump
● B) Submersible pump
● C) Jet pump
● D) Positive displacement pump
● Answer: A) Centrifugal pump
● Explanation: Centrifugal pumps use an impeller to generate flow by converting
mechanical energy from a motor to fluid flow energy.
5. Which pump type is best suited for high-pressure, low-flow applications?
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● A) Centrifugal pump
● B) Submersible pump
● C) Jet pump
● D) Positive displacement pump
● Answer: D) Positive displacement pump
● Explanation: Positive displacement pumps are effective for high-pressure, low-flow
applications as they displace a fixed amount of fluid per cycle, maintaining consistent
flow regardless of pressure.
6. Which of the following statements best describes a jet pump?
● A) It uses centrifugal force to move water.
● B) It is designed to operate underwater.
● C) It uses a venturi effect to draw water.
● D) It displaces fluid through a reciprocating action.
● Answer: C) It uses a venturi effect to draw water.
● Explanation: Jet pumps use a venturi effect to create suction, which draws water
from a well or reservoir.
7. What characteristic is common to all positive displacement pumps?
● A) They can run dry without damage.
● B) They maintain a constant flow rate regardless of pressure.
● C) They are used primarily for water applications.
● D) They are limited to low-pressure applications.
● Answer: B) They maintain a constant flow rate regardless of pressure.
● Explanation: Positive displacement pumps deliver a consistent flow rate regardless
of the pressure in the system.
8. What does a pump curve typically display?
● A) The size of the pump
● B) The efficiency of the pump
● C) The relationship between flow rate and head
● D) The weight of the pump
● Answer: C) The relationship between flow rate and head
● Explanation: A pump curve graphically represents the relationship between the flow
rate and the head (pressure) of the pump, indicating performance characteristics.
9. In which application would a submersible pump be inappropriate?
● A) Shallow well
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● B) Deep well
● C) Flooded basement
● D) Industrial chemical transfer
● Answer: D) Industrial chemical transfer
● Explanation: Submersible pumps are primarily designed for water applications, and
may not be suitable for transferring industrial chemicals due to material compatibility
issues.
10. What is the main advantage of using a centrifugal pump in water distribution
systems?
● A) Ability to handle viscous fluids
● B) High efficiency at high flow rates
● C) Consistent flow rate regardless of system pressure
● D) Low initial cost
● Answer: B) High efficiency at high flow rates
● Explanation: Centrifugal pumps are highly efficient at handling high flow rates,
making them ideal for water distribution systems.
11. What component in a jet pump creates the suction needed to lift water?
● A) Impeller
● B) Venturi
● C) Diaphragm
● D) Piston
● Answer: B) Venturi
● Explanation: The venturi component in a jet pump creates a low-pressure area that
generates the suction required to lift water.
12. What type of pump is typically used for dosing or precise fluid measurement
applications?
● A) Centrifugal pump
● B) Submersible pump
● C) Jet pump
● D) Positive displacement pump
● Answer: D) Positive displacement pump
● Explanation: Positive displacement pumps are ideal for dosing and precise fluid
measurement due to their ability to deliver exact amounts of fluid per cycle.
13. What happens to the flow rate in a centrifugal pump if the discharge pressure
increases?
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● A) Flow rate increases
● B) Flow rate decreases
● C) Flow rate remains the same
● D) Pump stops working
● Answer: B) Flow rate decreases
● Explanation: In a centrifugal pump, as discharge pressure increases, the flow rate
decreases due to the nature of its performance curve.
14. Which factor is least likely to affect the performance of a centrifugal pump?
● A) Impeller size
● B) Pump speed
● C) Fluid viscosity
● D) Color of the fluid
● Answer: D) Color of the fluid
● Explanation: The color of the fluid does not affect the performance of a centrifugal
pump, whereas impeller size, pump speed, and fluid viscosity are significant factors.
15. Why are submersible pumps often preferred for deep well applications?
● A) They are less expensive.
● B) They are easier to maintain.
● C) They prevent cavitation issues.
● D) They can handle solids.
● Answer: C) They prevent cavitation issues.
● Explanation: Submersible pumps prevent cavitation issues since they are submerged
and operate below the water level, reducing the risk of cavitation.
16. What is the primary function of a pump impeller?
● A) To filter debris from the fluid
● B) To convert electrical energy to mechanical energy
● C) To increase the velocity of the fluid
● D) To measure the flow rate
● Answer: C) To increase the velocity of the fluid
● Explanation: The impeller in a pump increases the velocity of the fluid, which is then
converted to pressure.
17. Which type of pump is typically used for irrigation systems?
● A) Centrifugal pump
● B) Submersible pump
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