Blueprint Reading and Schematics Flashcards
7 cards from real CPM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Blueprint Reading and Schematics flashcards as text
On a mechanical drawing, edges that are not visible from the current view are shown with which line type?
Answer: Short evenly spaced dashes
Hidden lines are drawn as short, evenly spaced dashes to show edges that cannot be seen in that view.
A line made of alternating long and short dashes running through the middle of a shaft most likely represents what?
Answer: A center line marking the axis of symmetry
Center lines use alternating long and short dashes to mark axes of symmetry and centers of holes or shafts.
In third-angle projection, the standard used on US drawings, where is the top view placed?
Answer: Directly above the front view
Third-angle projection places the top view above the front view and the right-side view to its right.
A thick line with arrows at each end, drawn across a view, tells the reader what?
Answer: Where an imaginary cut was made for a section view and which way to look
A cutting-plane line shows where the section was taken, and its arrows show the viewing direction.
A part outline drawn with long dashes separated by pairs of short dashes most likely represents what?
Answer: An alternate position of a moving part or an adjacent part
Phantom lines (long, short, short) show alternate positions, repeated detail, or nearby parts.
A drawing's title block shows a scale of 1:2. A feature measures 1.5 inches on the print. What is its actual size?
Answer: 3.0 inches
At 1:2 the drawing is half size, so the actual feature is 1.5 × 2 = 3.0 inches.
Why would a drafter add an auxiliary view to a drawing?
Answer: To show the true size and shape of an inclined surface
An auxiliary view is projected perpendicular to an inclined surface so its true size and shape can be seen.