Preview Questions Plumber | Role Specific Skill

Question 1: When performing a water leak detection test on a drainage system, which pressure test method is commonly used?

Which action should you take?

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Positive pressure test

Hydrostatic pressure test

Dynamic pressure test

Vacuum pressure test

Question 2: What is the main disadvantage of using galvanized steel pipes for water supply systems in corrosive environments?

Which action should you take?

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Reduced thermal resistance

Corrosion inside the pipe leading to reduced water flow

Higher cost compared to copper pipes

Difficulty in bending the pipes

Question 3: What is the required inspection interval for plumbing systems in a newly constructed building before occupancy according to the IPC?

Which action should you take?

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48 hours

24 hours

96 hours

72 hours

Question 4: What is the most effective method for detecting a hidden water leak in a concrete slab foundation?

Which action should you take?

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Use of acoustic leak detection devices

Infrared thermography

Dye testing

Visual inspection of surface cracks

Question 5: When using a gas tracer to detect leaks, which gas is most commonly used for underground plumbing leak detection?

Which action should you take?

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Nitrogen

Carbon dioxide

Helium

Methane

Question 6: What is the primary cause of water hammer in a plumbing system, and how can it be resolved?

Which action should you take?

Choose only one option

Sudden changes in water flow velocity; installing air chambers

Water pressure drop due to blockages; replacing pipes

Insufficient pipe diameter; enlarging the pipe diameter

Excessive water pressure; installing a pressure-reducing valve