ACP Assembly Modeling 2 — Questions and Answers
Question 1: Which Inventor joint type removes all six degrees of freedom between two components?
- Planar
- Rotational
- Ball
- Rigid (Correct answer)
Correct answer: Rigid
A Rigid joint locks the components together, leaving no relative motion.
Question 2: A Ball joint between two components leaves which degrees of freedom available?
- No degrees of freedom
- Two translational and one rotational
- Three rotational degrees of freedom (Correct answer)
- One rotational and one translational
Correct answer: Three rotational degrees of freedom
A Ball joint allows rotation about all three axes while preventing translation.
Question 3: Which joint type allows one rotation and one translation along the same axis, like a pin sliding in a bore?
- Slider
- Planar
- Rotational
- Cylindrical (Correct answer)
Correct answer: Cylindrical
A Cylindrical joint permits rotation about and translation along a shared axis.
Question 4: What does a Planar joint allow?
- Only translation along one axis
- Rotation about three axes
- Two translations in a plane and one rotation normal to it (Correct answer)
- Only rotation about one axis
Correct answer: Two translations in a plane and one rotation normal to it
A Planar joint keeps faces coplanar while allowing in-plane sliding and rotation about the normal.
Question 5: Which Angle constraint solution lets you define a third reference vector to prevent the angle from flipping direction?
- Directed Angle
- Undirected Angle
- Tangent Angle
- Explicit Reference Vector (Correct answer)
Correct answer: Explicit Reference Vector
Explicit Reference Vector adds a z-axis reference so the angle direction stays predictable.
Question 6: In the Joint dialog, what can you set on the Limits tab?
- Material and mass properties
- BOM structure
- Display color and visibility
- Start, End, and Current values for motion (Correct answer)
Correct answer: Start, End, and Current values for motion
Joint limits restrict motion between start and end values with a defined current position.
Question 7: Which keyboard-and-mouse shortcut lets you drag one component's face onto another to quickly apply a constraint without opening the dialog?
- Shift + drag
- Ctrl + drag
- Alt + drag (Correct answer)
- Tab + drag
Correct answer: Alt + drag
Alt+drag infers and applies a constraint based on the geometry you drop onto.
ACP Assembly Modeling 2
Which Inventor joint type removes all six degrees of freedom between two components?