MILLWRIGHT LEVEL 3 ACTUAL EXAM PAPER
2026 QUESTIONS WITH ANSWERS GRADED
A+
◉ The biggest possible shaft diameter is smaller then the smallest
possible bearing bore.
Answer: A clearance fit
◉ What type of seal can be reused.
Answer: O-Ring
◉ What does a bigger gasket change.
Answer: The internal clearance of a bearing
◉ If you have 4 bearings on 1 shaft how many are fixed and where.
Answer: 1 bearing is fixed closeted to the drive coupling
◉ Inclusion.
Answer: What the weld has dirt contamination
◉ Porosity.
,Answer: Air pockets in the weld
◉ Asphyxiation.
Answer: Hazard with GTAW in confined space
◉ What is the minimum contact on a belt pulley.
Answer: 120
◉ What harmful gas is produced from GMAW.
Answer: Ozone
◉ How do you remove a tapered coupling.
Answer: Fluid injection
◉ The feet of a motor have machining defects and have an uneven
gap between the base what do you use.
Answer: Elastomer shim
◉ What is the purpose of flux in a welding consumable.
Answer: To protect the weld
◉ Why do you have post flow in GTAW.
, Answer: To protect the electrode
◉ What causes splatter in stick welding.
Answer: Arc gap to high or Arc blow
◉ What can a damp welding rod cause.
Answer: Porosity
◉ What happens to the puddle when you increase voltage.
Answer: The puddle will increase and the act size will increase
◉ What is soft foot.
Answer: Uneven distribution of weight
◉ What is the information in a belt code A355.
Answer: The A means 1/2 the 355 is 35.5" in length
◉ How is a chain sized.
Answer: In pitches
◉ How are pulley's aligned.
Answer: Straight edge
2026 QUESTIONS WITH ANSWERS GRADED
A+
◉ The biggest possible shaft diameter is smaller then the smallest
possible bearing bore.
Answer: A clearance fit
◉ What type of seal can be reused.
Answer: O-Ring
◉ What does a bigger gasket change.
Answer: The internal clearance of a bearing
◉ If you have 4 bearings on 1 shaft how many are fixed and where.
Answer: 1 bearing is fixed closeted to the drive coupling
◉ Inclusion.
Answer: What the weld has dirt contamination
◉ Porosity.
,Answer: Air pockets in the weld
◉ Asphyxiation.
Answer: Hazard with GTAW in confined space
◉ What is the minimum contact on a belt pulley.
Answer: 120
◉ What harmful gas is produced from GMAW.
Answer: Ozone
◉ How do you remove a tapered coupling.
Answer: Fluid injection
◉ The feet of a motor have machining defects and have an uneven
gap between the base what do you use.
Answer: Elastomer shim
◉ What is the purpose of flux in a welding consumable.
Answer: To protect the weld
◉ Why do you have post flow in GTAW.
, Answer: To protect the electrode
◉ What causes splatter in stick welding.
Answer: Arc gap to high or Arc blow
◉ What can a damp welding rod cause.
Answer: Porosity
◉ What happens to the puddle when you increase voltage.
Answer: The puddle will increase and the act size will increase
◉ What is soft foot.
Answer: Uneven distribution of weight
◉ What is the information in a belt code A355.
Answer: The A means 1/2 the 355 is 35.5" in length
◉ How is a chain sized.
Answer: In pitches
◉ How are pulley's aligned.
Answer: Straight edge
