Engineering Design Masterclass: Drafting, SolidWorks & GD&T

A: A confuses profile with straightness and drops B and C, B inverts the intent and ignores form entirely, C assumes intent not expressed on the drawing which breaks inspection, D matches a single-segment profile of a surface controlling all points to the DRF.

A: A creates dual acceptance criteria that QA can't reconcile, B punts control to tribal knowledge and breaks repeatability, C invents a non-standard rule that no CMM will follow, D enforces a single authority so tolerances mean the same thing to design, build, and inspect.

A: A drops elasticity out of the model so retention vanishes, B assumes plasticity without checking yield, C forgets aluminum's lower modulus and yield, D lands in the right band once you run the Lamé math with E and ν in mind.

A: A mixes up Ra with Rz and lets leak paths through, B ignores the leader and scope, C invents a process constraint not stated, D ties the symbol to a measurable surface texture requirement.

A: A trades stiffness consistency for porosity scatter, B ignores the mass constraint entirely, C discounts weld-induced distortion and fatigue, D gives controlled geometry with better E/ρ utilization and inspectable datums.

A: A drops the material modifier meaning, B flips bonus direction and over-constrains, C misunderstands functional gaging, D aligns location freedom with functional clearance as size departs worst case.

A: A underestimates clamp and risks joint slip, B confuses yield capacity with achieved preload, C forgets friction eats most of the torque, D lands where the nut factor math points for an M8 at that torque.

A: A assumes a hierarchy that doesn't exist, B misreads how controls coexist, C invents tolerance addition not defined in the standard, D recognizes that form and orientation are independently constrained.

A: A invites scuffing and stuck parts, B ignores texture depth effects, C creates asymmetric ejection loads, D matches draft to surface finish so the part releases without tool damage.