Specific Competencies and Skills Tested in this Assessment:
Preparing to Draw: Basic Drawing and Dimensioning Skills
- Measure lines, angles, and geometric features
- Identify drawing views and details
- Identify assembly drawings, detailed drawings, and other drawings by type
- Identify revisions and apply engineering change information
- Identify and create line types
- Identify and create sketches
- Complete title block and apply reference information
- Identify and complete a parts list/bill of materials
- Select and interpret scale and paper size
- Identify and operate design tools/instruments (CAD and/or manual)
- Identify reference charts and tables
- Demonstrate knowledge of mathematical operations
- Demonstrate knowledge of geometry
- Demonstrate knowledge of trigonometry
- Identify and read precision measurement tools
- Calculate unit conversion
- Draw lines and curved elements
- Construct perpendicular and parallel lines
- Construct tangent lines and arcs
- Construct geometric shapes
- Identify and construct developments
- Bisect and divide geometric elements
- Demonstrate knowledge of multiview drawings
- Multiview projection (third angle and first angle)
- Differentiate between major surface types (normal, inclined, oblique, cylindrical)
- Identify common part features (fillets, rounds, draft angles, chamfers)
- Identify and construct section views
- Identify ANSI material symbols
- Apply section rules
- Identify and construct auxiliary views
- Draw true view, true length lines, and true angles
- Locate and describe features
- Demonstrate knowledge of various unit dimensioning systems
- Identify finished surfaces
- Demonstrate knowledge of tolerances
- Identify and label common mechanical feature notations
- Place local and general notes, including fonts, lettering size, style, etc.
- Identify geometric dimensioning and tolerancing symbols
- Identify measurements
Administration Time: 3 hours
Number of Questions: 160
Preparing to Draw: Basic Drawing and Dimensioning Skills: 25%
Applied Mathematics: 7%
Identify Measurements: 4%
Geometric Construction: 13%
Engineering Drawings: 6%
Multi view Drawings: 10%
Section Views: 9%
Auxiliary Views: 4%
Dimensioning Skills: 22%
What drawing method is used to illustrate, on a magnified scale, a view of an object which includes dimensions and clarification information specific to the object?
- detail drawing
- perspective drawing
- oblique drawing
- isometric drawing
An octagon has how many sides?
A key feature of an exploded assembly drawing is its arrangement
- by two organizational systems
- by vertical placement
- as a spatial relationship of parts
- as parts ordered by size
Current drafting practices or standards are established by
When specifying and identifying threads, what does the underlined number in 1/2 – 13UNC-2A represent?
- nominal diameter
- class of fit
- threads per inch
- size of thread in millimeters
What is the most important rule in freehand sketching?
- Never sketch in color.
- Keep the sketch in proportion.
- Always use the squares method.
- Always use drafting tools.
An isometric and oblique are examples of _____ drawings.
There are _____ normal viewing planes to view an object.
Auxiliary views are always projected from an edge of a surface that is
- hidden from view
- horizontal to the viewing plane
- nonparallel to a principal view
- perpendicular to the viewing plane
How many degrees are in a straight line?
- 160 degrees
- 180 degrees
- 200 degrees
- 360 degrees
Administration Time: 3 hours
Number of Jobs: 4
21% Auxiliary Views
Use of tools or computer program, complete drawing – top view, complete drawing – front view, complete drawing – partial auxiliary view, line quality, and time to complete Job 1.
36% Drawing Completion and Dimensioning
Use of tools or computer program, complete drawing – top view, complete drawing – front view, complete drawing – right side view, line quality, placement of dimensions, tolerance of feature sizes and locations, and time to complete Job 2.
19% Pattern Development
Use of tools or computer program, use of construction techniques, solution, line quality, and time to complete Job 3.
24% Section Drawing
Use of tools or computer program, complete drawing – front view, complete drawing – full section view, section hatch pattern, line quality, and time to complete Job 4.
Maximum Time: 35 minutes
Participant Activity: CAD or Manual Options: Using the graphic provided, the participant will draw a top, front, and partial auxiliary view showing inclined, true size and shape on an A-size drawing sheet. Manual Option only – showing construction line sis optional and will not be graded.