BME Engineering Drawing and CAD

Question 1

In first-angle projection (used outside the US), the front view is projected:

Accepted Answer

Onto the plane behind the object

Answer

In first-angle projection, the object is between the observer and the projection plane, so the front view is cast onto the plane behind the object.

Question 2

The standard drawing projection method used in the United States is:

Accepted Answer

Third-angle projection

Answer

Third-angle projection, identified by its symbol of a truncated cone with the small end toward the viewer, is the standard in the US per ASME/ANSI.

Question 3

A hidden line in engineering drawing is represented by:

Accepted Answer

Thin dashed line

Answer

Hidden lines represent edges or outlines not visible from the current view and are drawn as thin dashed lines per standard drafting conventions.

Question 4

In GD&T, the symbol ⊙ represents:

Accepted Answer

Circularity (roundness)

Answer

The circle symbol ⊙ in GD&T denotes circularity (roundness), which controls how close a cross-sectional circle is to a true perfect circle.

Question 5

A section view in a drawing is used to:

Accepted Answer

Reveal internal features by cutting through the part

Answer

A section view cuts through the object along a cutting plane to reveal internal features that would otherwise be hidden, improving clarity.

BME - Bachelor of Mechanical Engineering Practice Test