CPO CPO Pool Equipment and Mechanical Systems Questions and Answers

Question 1

What is the primary purpose of a pool pump's strainer basket?

Accepted Answer

To collect debris before water enters the pump impeller

Answer

To regulate water flow rate

Answer

To filter out bacteria from pool water

Answer

To monitor water pressure

Question 2

What does TDH stand for in pool pump hydraulics?

Accepted Answer

Total Dynamic Head

Answer

Total Drain Head

Answer

Turbine Drive Hydraulics

Answer

Tank Distribution Height

Question 3

At what pressure rise above the clean starting pressure should a sand filter typically be backwashed?

Accepted Answer

8–10 PSI

Answer

2–4 PSI

Answer

5–7 PSI

Answer

15–20 PSI

Question 4

What type of motor is most commonly used in modern variable-speed pool pumps?

Accepted Answer

Permanent magnet motor

Answer

Induction motor

Answer

Brushed DC motor

Answer

Synchronous reluctance motor

Question 5

What is the purpose of a check valve in pool plumbing?

Accepted Answer

To prevent backflow of water

Answer

To measure water flow velocity

Answer

To regulate chemical dosing

Answer

To balance pressure across multiple inlets

Question 6

What is cavitation in a pool pump?

Accepted Answer

The formation and collapse of vapor bubbles due to low suction pressure

Answer

The process of air being purged from filter media

Answer

Excessive vibration caused by motor imbalance

Answer

A pressure spike from rapid valve closure