Free practice test

CNC Operator Practice Test

Check what you know about the CNC operator 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 CNC operator 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 15G-code is:
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Answer: A machine programming language. Programming.

Question 2 of 15Feed hold:
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Answer: Pauses motion. Control.

Question 3 of 15Measure on first article:
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Answer: Every dimension. Quality.

Question 4 of 15Keep doors:
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Answer: Closed during cycles. Safety.

Question 5 of 15A work offset sets:
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Answer: Part zero. Setup.

Question 6 of 15Which term matches this definition: “Part zero location.”
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Answer: Work offset. Work offset: Part zero location.

Question 7 of 15What does “Program number” mean?
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Answer: ID for a part program.. Program number: ID for a part program.

Question 8 of 15Which term matches this definition: “Standard operating procedure.”
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Answer: SOP. SOP: Standard operating procedure.

Question 9 of 15What does “Feed hold” mean?
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Answer: Pauses motion.. Feed hold: Pauses motion.

Question 10 of 15Which term matches this definition: “Cutting tip.”
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Answer: Insert. Insert: Cutting tip.

Question 11 of 15What does “Tool offset” mean?
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Answer: Tool length or wear adjustment.. Tool offset: Tool length or wear adjustment.

Question 12 of 15Which term matches this definition: “Begins a program.”
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Answer: Cycle start. Cycle start: Begins a program.

Question 13 of 15What does “CNC” mean?
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Answer: Computer numerical control.. CNC: Computer numerical control.

Question 14 of 15Which term matches this definition: “Parts that fail inspection.”
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Answer: Scrap. Scrap: Parts that fail inspection.

Question 15 of 15What does “First article” mean?
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Answer: First part checked before a run.. First article: First part checked before a run.

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