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The ACU exam has 35 questions and runs 0 hours 50 minutes.
These 10 free ACU questions are organized by exam domain, so you can see how each part of the AutoCAD Certified User (ACU) blueprint is tested. Reveal the answer and explanation under each question.
A prop remains visible and shaded, but clicking it in the viewport does not select it. Other props select normally, object-selection mode is active, and the affected prop belongs to a display layer marked R. How can the artist restore ordinary viewport selection while retaining the shaded display?
Correct answer: B - Set the prop's display layer to Normal.
A metal housing is still a six-quad box with no supporting edge loops. Soften Edge has changed its shading, but its outer silhouette remains sharp. The next version needs narrow chamfers that catch light while the broad panels stay flat. Which edit satisfies that brief?
Correct answer: C - Bevel the outer edges with a narrow width.
Two sections of a pipe face each other across a short gap. Their open ends each have eight border edges with matching correspondence. Combine has placed them in one polygon mesh, but they remain disconnected shells. The missing section must be an open tube, not two caps. Which operation creates the connecting faces?
Correct answer: A - Bridge the corresponding border loops.
Two identical cabinet doors share a 2048 x 2048 texture. Each door is 100 cm wide, with that width mapped along U. The left door's undistorted UV shell spans 0.50 in U; the right door's undistorted shell spans 0.25 in U. There is room to enlarge and repack the right shell. Match its linear texel density to the left door while preserving the texture's proportions.
Correct answer: D - Uniformly scale the right UV shell by a factor of 2.
An Arnold material shades correctly until a tangent-space normal map is connected. The UVs are undistorted, the map uses the required axis convention, and the normal-map utility is wired correctly. The file node nevertheless interprets the vector data as sRGB color. What is the first setting to correct?
Correct answer: C - Read the normal-map file as Raw, not sRGB.
A character's wrist must stay on a fixed hand control while the animator directs the elbow inward or outward with a separate control. The shoulder-elbow-wrist chain has a slight bend, and its bones must not stretch. The required IK setup is:
Correct answer: B - An RP IK handle with a pole-vector control.
During a timing review, a complex character scene set to 24 fps runs slowly in the viewport with Play Every Frame enabled. The director needs to judge the animation at its intended speed; lighting and final image quality are not being reviewed. How should the animator provide that review without changing the animation?
Correct answer: A - Capture a Playblast of the shot and review it at 24 fps.
A lighting review notes: "Keep this shadow's softness, but remove the grain." The Maya Software scene uses a point light with a nonzero Light Radius and raytraced shadows. The soft transition has the approved width; random grain appears within it. Which diagnosis fits that combination?
Correct answer: D - Too few raytraced shadow samples.
Only the closest part of a product disappears in shotCam; a side viewport shows that the mesh is intact. The missing surface is 0.4 cm in front of shotCam, measured along its viewing axis, and lies inside the image boundaries. Near Clip is 1 cm and Far Clip is 1000 cm. Restore the surface without changing the camera's viewpoint or lens.
Correct answer: D - Reduce Near Clip from 1 cm to 0.1 cm.
A camera travels along an approved, fixed curve. Its motion-path U Value is keyed linearly from 0 to 1, which are also the curve's parameter endpoints. Fraction Mode is off. A rendered review played at the correct frame rate shows uneven travel speed because equal parameter increments cover unequal distances. The route and endpoint key times must stay unchanged. To obtain constant distance traveled per second:
Correct answer: A - Enable Fraction Mode; keep U Value linear from 0 to 1.
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