Engineering Drawing and CAD Flashcards
6 cards from real BME practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Engineering Drawing and CAD flashcards as text
In first-angle projection (used outside the US), the front view is projected:
Answer: Onto the plane behind the object
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.
The standard drawing projection method used in the United States is:
Answer: Third-angle projection
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.
A hidden line in engineering drawing is represented by:
Answer: Thin dashed line
Hidden lines represent edges or outlines not visible from the current view and are drawn as thin dashed lines per standard drafting conventions.
In GD&T, the symbol ⊙ represents:
Answer: Circularity (roundness)
The circle symbol ⊙ in GD&T denotes circularity (roundness), which controls how close a cross-sectional circle is to a true perfect circle.
A section view in a drawing is used to:
Answer: Reveal internal features by cutting through the part
A section view cuts through the object along a cutting plane to reveal internal features that would otherwise be hidden, improving clarity.
The scale '1:2' on an engineering drawing means the drawing is:
Answer: Half the actual size
A scale of 1:2 means one unit on the drawing equals 2 units on the actual object, so the drawing is half the true size.