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TX General Pump Installer Exam ALL 250
QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE THIS YEAR
TX General Pump Installer –
BATCH 1 (Questions 1–50)
1. Which pump type moves fluid by trapping and forcing a fixed volume?
A) Centrifugal
B) Submersible
C) Jet
D) Positive displacement
Answer: D
Rationale: Positive displacement pumps move a fixed amount of fluid each cycle.
2. What happens if a centrifugal pump runs against a closed valve?
A) Pressure decreases
B) Motor overloads
C) Flow increases
D) System drains
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Answer: B
Rationale: Dead-heading causes overheating and motor overload.
3. Which pump is most affected by changes in system pressure?
A) Jet
B) Submersible
C) Centrifugal
D) Piston
Answer: C
Rationale: Centrifugal pump flow varies with pressure.
4. What is cavitation in pumps?
A) Motor failure
B) Formation of vapor bubbles
C) Electrical short
D) Pipe corrosion
Answer: B
Rationale: Cavitation occurs when pressure drops and vapor bubbles form.
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5. Which condition promotes cavitation?
A) High inlet pressure
B) Low suction head
C) Clean filters
D) Large pipes
Answer: B
Rationale: Low suction pressure causes vaporization.
6. What is the main function of a pump seal?
A) Reduce noise
B) Prevent leakage
C) Increase flow
D) Improve cooling
Answer: B
Rationale: Seals prevent fluid from leaking along the shaft.
7. Which pump can handle viscous fluids best?
A) Centrifugal
B) Jet
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C) Positive displacement
D) Submersible
Answer: C
Rationale: PD pumps work well with thick fluids.
8. What does “head” represent in pumping systems?
A) Pipe length
B) Water height
C) Motor size
D) Flow speed
Answer: B
Rationale: Head is the vertical height fluid is lifted.
9. Which component converts mechanical energy to fluid energy?
A) Shaft
B) Bearing
C) Impeller
D) Coupling
Answer: C
Rationale: The impeller transfers energy to fluid.
4
TX General Pump Installer Exam ALL 250
QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE THIS YEAR
TX General Pump Installer –
BATCH 1 (Questions 1–50)
1. Which pump type moves fluid by trapping and forcing a fixed volume?
A) Centrifugal
B) Submersible
C) Jet
D) Positive displacement
Answer: D
Rationale: Positive displacement pumps move a fixed amount of fluid each cycle.
2. What happens if a centrifugal pump runs against a closed valve?
A) Pressure decreases
B) Motor overloads
C) Flow increases
D) System drains
1
, Page 2 of 84
Answer: B
Rationale: Dead-heading causes overheating and motor overload.
3. Which pump is most affected by changes in system pressure?
A) Jet
B) Submersible
C) Centrifugal
D) Piston
Answer: C
Rationale: Centrifugal pump flow varies with pressure.
4. What is cavitation in pumps?
A) Motor failure
B) Formation of vapor bubbles
C) Electrical short
D) Pipe corrosion
Answer: B
Rationale: Cavitation occurs when pressure drops and vapor bubbles form.
2
, Page 3 of 84
5. Which condition promotes cavitation?
A) High inlet pressure
B) Low suction head
C) Clean filters
D) Large pipes
Answer: B
Rationale: Low suction pressure causes vaporization.
6. What is the main function of a pump seal?
A) Reduce noise
B) Prevent leakage
C) Increase flow
D) Improve cooling
Answer: B
Rationale: Seals prevent fluid from leaking along the shaft.
7. Which pump can handle viscous fluids best?
A) Centrifugal
B) Jet
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C) Positive displacement
D) Submersible
Answer: C
Rationale: PD pumps work well with thick fluids.
8. What does “head” represent in pumping systems?
A) Pipe length
B) Water height
C) Motor size
D) Flow speed
Answer: B
Rationale: Head is the vertical height fluid is lifted.
9. Which component converts mechanical energy to fluid energy?
A) Shaft
B) Bearing
C) Impeller
D) Coupling
Answer: C
Rationale: The impeller transfers energy to fluid.
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