Preview Questions Plumber | Role Specific Skill

Question 1: What is the most common issue when installing hot water piping in large commercial buildings?

Which action should you take?

Choose only one option

Incorrect installation of shut-off valves

Pipe expansion and contraction

Incorrect pipe sizing

Pressure drop in the farthest fixtures

Question 2: When installing pipe systems for a radiant heating system, what is the most crucial step to ensure proper heat distribution?

Which action should you take?

Choose only one option

Ensuring that the pipe system is fully sealed at joints

Correct placement of pipes within the flooring material

Using only copper pipes for heat transfer

Installing insulation around the pipes to prevent heat loss

Question 3: What is the maximum recommended pressure for PVC pipes used in domestic water systems?

Which action should you take?

Choose only one option

80 psi

100 psi

160 psi

120 psi

Question 4: Which of the following tools is most essential when performing pipe threading for high-pressure systems?

Which action should you take?

Choose only one option

Pipe wrench

Pipe threading machine

Pipe bender

Pipe cutter

Question 5: In residential plumbing, which is the best method to ensure long-term pipe integrity in a system that uses copper piping and soldered joints?

Which action should you take?

Choose only one option

Installing water softeners to reduce calcium buildup

Use of fluoropolymer coatings inside pipes

Application of water conditioning systems

Regular inspection and re-soldering of joints

Question 6: What is the most effective method for detecting subtle leaks in high-density polyethylene (HDPE) pipes used for irrigation systems?

Which action should you take?

Choose only one option

Ultrasound monitoring of pressure variations

Visual inspection using transparent pipe sections

Pressure testing with dye

Acoustic leak detection