Preview Questions Plumber | Role Specific Skill

Question 1: When performing a hydrostatic pressure test on a newly installed piping system, what is the required procedure?

Which action should you take?

Choose only one option

Test the system for a minimum of 24 hours

Bleed air from the pipes before testing

Ensure all fittings and joints are tight and pressurized to test level

Start testing from the farthest point

Question 2: According to the International Plumbing Code (IPC), what is the minimum slope required for a drain pipe?

Which action should you take?

Choose only one option

1/4 inch per foot

1/2 inch per foot

1/16 inch per foot

1/8 inch per foot

Question 3: In commercial buildings, which of the following is not a permissible use of copper pipes under the National Plumbing Code (NPC)?

Which action should you take?

Choose only one option

Gas distribution

Hot water systems

Fire sprinkler systems

Drinking water distribution

Question 4: When installing water heater systems, what is the key factor in ensuring efficient energy use and preventing potential overheating?

Which action should you take?

Choose only one option

Installing an energy-efficient valve for temperature regulation

Properly sizing the tank and insulation materials

Installing a dual-element heating system

Ensuring proper venting and placement of the water heater

Question 5: When installing a new hot water system, what is the recommended pipe material for durability and efficiency?

Which action should you take?

Choose only one option

CPVC

Copper

PEX

Stainless Steel

Question 6: What is the best practice when installing a toilet in a new building?

Which action should you take?

Choose only one option

Use wax rings exclusively

Ensure the flange is properly aligned

Use a plastic flange

Install a flange with a built-in gasket