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Journeyman Plumber Exam

Tools and techniques: practice questions

Our Journeyman Plumber bank has 16 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.

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Question 1

What is used on pipe threads to seal threaded joints?

  1. Wax
  2. Solder
  3. Pipe thread compound or PTFE tape approved for the use
  4. Glue
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C. Pipe thread compound or PTFE tape approved for the use — Gas lines need yellow PTFE tape or approved compound.

Question 2

What is a flaring tool used for?

  1. Forming flared ends on soft copper tubing for flare fittings
  2. Cutting cast iron
  3. Gluing PVC
  4. Crimping PEX
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A. Forming flared ends on soft copper tubing for flare fittings — Flare fittings are used for gas and some water lines.

Question 3

What is a sewer camera inspection used for?

  1. Locating electrical wires and gas lines before digging any trench
  2. Viewing the inside of drain and sewer lines to find problems
  3. Measuring gas pressure
  4. Testing water quality
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B. Viewing the inside of drain and sewer lines to find problems — It helps diagnose root intrusion and breaks.

Question 4

What is the correct way to heat a copper joint for soldering?

  1. Heat the pipe far from the fitting
  2. Don't use heat
  3. Heat the solder directly
  4. Heat the fitting, not the solder, until solder melts on contact and is drawn into the joint
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D. Heat the fitting, not the solder, until solder melts on contact and is drawn into the joint — Capillary action draws solder in.

Question 5

Why must copper tubing be reamed after cutting?

  1. To thread it
  2. To remove the inside burr that restricts flow and causes turbulence
  3. To heat it
  4. To make it shiny
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B. To remove the inside burr that restricts flow and causes turbulence — Burrs can cause erosion.

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