BME Engineering Drawing and CAD 2

Question 1

In CAD, parametric modeling means:

Accepted Answer

Model geometry is driven by defined parameters and constraints

Answer

Parametric modeling ties geometry to design parameters (dimensions and constraints), so changing a parameter automatically updates the entire model.

Question 2

A datum in GD&T is:

Accepted Answer

A theoretically exact point, axis, or plane used as a reference

Answer

A GD&T datum is a theoretically perfect geometric reference (point, line, or plane) established from actual part features to measure other geometric tolerances.

Question 3

Which line type represents the axis of symmetry in engineering drawings?

Accepted Answer

Long chain (dash-dot) line

Answer

A centerline (long chain or dash-dot-dash line) indicates axes of symmetry, center points, and paths of motion in engineering drawings.

Question 4

In ASME Y14.5 GD&T, the Maximum Material Condition (MMC) modifier means:

Accepted Answer

The feature contains the most material within its tolerances

Answer

MMC refers to the condition where a feature of size contains the maximum amount of material — largest shaft diameter or smallest hole diameter within tolerance.

Question 5

An isometric view is a type of:

Accepted Answer

Pictorial (axonometric) projection

Answer

Isometric projection is an axonometric (pictorial) drawing where all three axes are equally inclined to the projection plane at 30°, giving equal foreshortening.

BME - Bachelor of Mechanical Engineering Practice Test

BME - Bachelor of Mechanical Engineering Practice Test

BME Engineering Drawing and CAD 2