Orthographic Projection True/False

False

A drilled hole is more accurate than a reamed hole

False

A micrometer is used in dimensioning a blind hole

False

All drawings should be lightly numbered

False

An orthographic perspective projection is the most accurate description of shape description where in an un-distorted image of the object appears in a flat, transparent, but imaginary projection plane

True

Before beginning a three-view drawing it's good practice to make preliminary sketches of the object

True

Fillets are interior rounded intersections between two surfaces

True

Runout is the formation of a curved surface where a flat and curved surface meet

False

Spatial visualization is a skill that comes naturally to most people and therefore doesn't require much practice before proficient doing

True

Spatial visualization is the basis for understanding multi-view drawings

True

The front view should be positioned to minimize the number of hidden lines in all views

True

The lightly constructed 45-degree angle projection line is used to represent visual rays

True

The orthographic view that projected to the right of the front view is referred to as the right profile

False

The principal viewing planes are all parallel to one another

False

The three kinds of breaks commonly used in technical drawings are the C, Z, and the freehand

False

The top view is sometimes referred to as the profile view

True

The usual depth (called off) for a counterbored hole is slightly deeper than the height of the head of the fastener

False

The work area on a drawing is the size of the piece of paper with which you are working