10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The COP exam has 60 questions and runs 3 hours.
These 10 free COP questions are organized by exam domain, so you can see how each part of the Certified Onshape Professional (COP) blueprint is tested. Reveal the answer and explanation under each question.
A row of separate support posts must end at a sloping reference surface. The seed post is an Extrude set to New and Up to next. A linear feature pattern copies the seed result, leaving later posts short of the surface. Their profiles and locations are correct. How can each post resolve its own termination as the surface changes?
Correct answer: B - Enable Reapply features in the existing feature pattern.
Two hole circles must always have equal diameters. Their centers are fully located, an Equal constraint connects the circles, and the left circle has a 12 mm driving diameter. A diameter added to the right circle appears light gray. The reviewer wants both diameters visible while future size changes remain controlled from the left circle. What should be retained?
Correct answer: D - The driven right-hand dimension and the Equal constraint.
A bridging curve meets an existing styling curve at the same endpoint and with the same tangent direction. At the join, curvature is 0.040 mm⁻¹ on the existing curve and 0.025 mm⁻¹ on the bridge. The specification requires G2 continuity. Which edit addresses the unmet condition?
Correct answer: B - Use Match curvature against the adjacent curve at that end.
A fixture's shipping mass must not exceed 210 g. Its carrier, insert, and cover are all selected in a Part Studio mass check. The displayed mass is 186 g, but the dialog notes that the cover has no assigned material. There are no mass overrides. The cover is required in the shipped fixture. What is the appropriate basis for accepting or rejecting the mass requirement?
Correct answer: D - Assign the correct material to the cover and repeat the mass check.
Two closed end profiles produce a valid loft until a smooth boundary guide is added. The guide intersects the first profile, but its crossing of the second profile's plane lies 0.6 mm outside that profile's boundary. The profiles are correctly ordered and their dimensions must stay unchanged. Where should the repair be made?
Correct answer: C - Adjust the guide so it intersects the second profile boundary.
A shaft is connected to a fixed bearing housing by a Cylindrical mate. It spins correctly but also slides along its axis. The connector Z-axes are correctly aligned, and there are no other mates or limits. The design requires rotation with no axial travel. Select the single change that gives the intended motion.
Correct answer: C - Replace the Cylindrical mate with a Revolute mate.
In a screw-driven adjuster, a Screw relation couples a Cylindrical mate at 3.2 mm of axial travel per revolution. Positive rotation increases Z. The current position is Z = 4.0 mm, and translation is limited to 0.0-11.0 mm. No rotational limit applies. An engineer proposes a further positive rotation of 900°. Which assessment of that requested move is correct?
Correct answer: B - It requires Z = 12.0 mm, exceeding the upper translation limit.
Manufacturing needs an unchanging, named snapshot of today's fixture geometry in its existing Onshape document. The design team must keep editing Main while tooling is made. Both groups already have the access they need. Which handoff separates the manufacturing baseline from continuing design work?
Correct answer: D - Create a version for manufacturing; continue design changes in Main.
VentStudy branched from Main. Since then, Main changed mounting holes in the Housing Part Studio. VentStudy added vents in Housing and also changed mates in the Assembly tab. The Housing edits are compatible and have no dependencies on the assembly edits. Main must gain the vents, retain its mounting-hole changes, and leave its Assembly tab untouched. Choose the merge setup.
Correct answer: A - Target Main, source VentStudy: merge Housing changes; keep Main's Assembly.
During an assembly review in the Onshape iPad app, an engineer selects a component and needs its context menu without changing the view. Which touch gesture opens that menu?
Correct answer: C - Tap with two fingers.
The COP exam also covers these domains. Drill them in the full free practice test:
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