Free practice test

Welder Practice Test

Check what you know about the welder job with 15 free questions and instant explanations.

Updated By the Career Education Institute Curriculum Team
About this practice test

15 multiple-choice questions on welder knowledge, safety and vocabulary. Submit to see your score and explanations, or open any question’s answer as you go. Nothing is saved or shared.

Question 1 of 15Which process uses a continuously fed wire and shielding gas?
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Answer: GMAW (MIG). MIG welding feeds wire continuously with shielding gas.

Question 2 of 15Pinholes on a weld surface are called:
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Answer: Porosity. Porosity comes from trapped gas.

Question 3 of 15What does 1G refer to?
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Answer: A flat groove weld. 1G is the flat groove position.

Question 4 of 15Why use preheat on some metals?
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Answer: To reduce the risk of cracking. Preheat slows cooling and reduces cracking.

Question 5 of 15A hot work permit is needed to:
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Answer: Weld in areas with fire risk. Hot work permits control fire hazards.

Question 6 of 15Which term matches this definition: “The deposit of weld metal along a joint.”
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Answer: Bead. Bead: The deposit of weld metal along a joint.

Question 7 of 15What does “Fillet weld” mean?
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Answer: A triangular weld joining two surfaces at roughly right angles.. Fillet weld: A triangular weld joining two surfaces at roughly right angles.

Question 8 of 15Which term matches this definition: “Gas metal arc welding: uses a continuously fed wire and shielding gas.”
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Answer: GMAW (MIG). GMAW (MIG): Gas metal arc welding: uses a continuously fed wire and shielding gas.

Question 9 of 15What does “Porosity” mean?
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Answer: Gas pockets trapped in a weld, usually from contamination or poor shielding.. Porosity: Gas pockets trapped in a weld, usually from contamination or poor shielding.

Question 10 of 15Which term matches this definition: “A groove melted into the base metal next to the weld that isn’t filled.”
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Answer: Undercut. Undercut: A groove melted into the base metal next to the weld that isn’t filled.

Question 11 of 15What does “SMAW (stick)” mean?
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Answer: Shielded metal arc welding: uses a flux-coated electrode; good for outdoor and repair work.. SMAW (stick): Shielded metal arc welding: uses a flux-coated electrode; good for outdoor and repair work.

Question 12 of 15Which term matches this definition: “Codes describing joint orientation, from flat (1G) to fixed pipe at 45 degrees (6G).”
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Answer: Weld positions (1G–6G). Weld positions (1G–6G): Codes describing joint orientation, from flat (1G) to fixed pipe at 45 degrees (6G).

Question 13 of 15What does “GTAW (TIG)” mean?
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Answer: Gas tungsten arc welding: precise welding with a tungsten electrode and separate filler.. GTAW (TIG): Gas tungsten arc welding: precise welding with a tungsten electrode and separate filler.

Question 14 of 15Which term matches this definition: “Direct current electrode positive: the most common polarity for stick and MIG.”
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Answer: Polarity (DCEP). Polarity (DCEP): Direct current electrode positive: the most common polarity for stick and MIG.

Question 15 of 15What does “Hot work permit” mean?
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Answer: Authorization required before welding in areas with fire risk.. Hot work permit: Authorization required before welding in areas with fire risk.

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