Preview Questions Plumber | Role Specific Skill

Question 1: What is the primary factor affecting the life span of flexible plumbing connections in a building's HVAC system?

Which action should you take?

Choose only one option

Temperature fluctuations inside the pipes

Chemical reactions from water treatment

Exposure to high-pressure conditions

Constant vibration from machinery

Question 2: What is the most effective way to prevent water contamination in plumbing systems during maintenance?

Which action should you take?

Choose only one option

Flushing all systems with disinfectant

Shut off all main valves and clean filters first

Isolate work areas and apply UV treatment

Use of chemical sanitizers in pipes

Question 3: What is the primary purpose of using threaded pipe fittings in a plumbing system?

Which action should you take?

Choose only one option

To prevent thermal expansion of the pipe

To add structural strength to the system

To prevent water leakage at connection points

To allow for easy disassembly and maintenance

Question 4: What is the primary advantage of using hydrogen as a tracer gas for leak detection?

Which action should you take?

Choose only one option

It is detectable by most gas detectors

It is cost-effective and easily available

It is heavier than air and stays in place longer

It is non-flammable and easy to store

Question 5: 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 6: 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