Fusion 360 Parametric Design and History

Question 1

What is the 'timeline' at the bottom of the Fusion 360 screen used for?

Accepted Answer

Showing a chronological list of all modeling operations that can be edited or reordered

Answer

The timeline records every feature and operation in order, allowing you to go back, edit, reorder, or delete any step in the design history.

Question 2

In Fusion 360, what does 'fully constrained' mean for a sketch?

Accepted Answer

All sketch geometry is defined by dimensions or geometric constraints with no degrees of freedom remaining

Answer

A fully constrained sketch has every point and line locked in place by dimensions and constraints, shown by turning all lines black.

Question 3

What is a 'user parameter' in Fusion 360 and why is it useful?

Accepted Answer

A named dimension stored in the Parameters dialog that can drive multiple sketch and feature dimensions

Answer

User parameters let you define named variables (e.g., 'Wall_Thickness = 3 mm') that can be referenced across many dimensions, making global changes simple.

Question 4

What happens in Fusion 360 when you 'roll back' the timeline to an earlier feature?

Accepted Answer

Features after the rollback marker are temporarily hidden, and the model is shown as it was at that point in history

Answer

Rolling back the timeline hides all features after the marker, letting you add or edit geometry as if you were at that stage of the design.

Question 5

In Fusion 360 parametric modeling, what is the risk of 'over-constraining' a sketch?

Accepted Answer

Fusion 360 flags a conflict because redundant constraints contradict each other, preventing the sketch from solving

Answer

Adding a constraint or dimension that conflicts with existing ones causes an over-constrained (redundant) error, shown in red, which must be resolved before proceeding.

Fusion 360 Practice Test

Fusion 360 Practice Test

Fusion 360 Parametric Design and History