Free Texas plumbing practice test with 20 questions on water supply, drainage and vent systems, plumbing code, and TSBPE licensing. Instant scoring.
These questions are for study practice only and are not official exam questions.
Question 1
1
A homeowner reports very low water pressure at a single upstairs fixture while other fixtures work normally. What is the most likely cause?
Question 2
2
Why does a drain, waste, and vent (DWV) system require vent piping in addition to drain piping?
Question 3
3
What is the primary purpose of a backflow prevention device on a potable water supply line?
Question 4
4
Why do plumbing codes typically specify minimum pipe slope requirements for horizontal drainage piping?
Question 5
5
In Texas, what is the primary purpose of a P-trap under a sink?
Question 6
6
What is the main purpose of a water supply system's pressure-reducing valve (PRV)?
Question 7
7
What is the general purpose of adopting a plumbing code, such as the Uniform Plumbing Code or International Plumbing Code, at the state or local level?
Question 8
8
A fixture trap loses its water seal repeatedly after use, and gurgling is heard from a nearby drain. What is the most likely cause?
Question 9
9
What is the purpose of an air gap between a faucet spout and the flood-level rim of a sink?
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