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10: Test Your Knowledge
Explain why it is important to provide the most pertinent information in the clearest way possible when dimensioning a drawing.
Mechanical drawings dimensioned in inches are most commonly dimensioned in _____ inches.
Metric drawings are most commonly dimensioned in _____.
In unidirectional dimensioning, dimensions are placed _____ so that they are read from the bottom of the drawing.
The dimension line is a _____.
A. heavy black line
B. thin black line
C. heavy dashed line
D. thin dashed line
An extension line begins 1/16″ away from the point, edge, intersection, or feature of the object and extends about _____ past the last dimension line it is used for.
A(n) _____ is an angular dimension line used to specify sizes of circles and arcs or to point out special characteristics of an object.
For most applications, _____ long arrowheads are satisfactory for dimensioning.
A. 1/8″
B. 1/4″
C. 1/2″
D. 3/4″
The three basic types of dimensions are overall, _____, and size dimensions.
Dimensions are placed on the views that show the true _____ of the feature being dimensioned.
Which of the following is true of dimensions?
A. Dimensions should be placed within the outlines of the views.
B. Overall dimensions should be placed nearest the view, while the smaller dimensions should be placed farther from the view.
C. Dimensions should be placed so that no scaling of the drawing is necessary
D. Dimensions should be duplicated across views.
Define
chain dimensioning
.
Give the symbols used to indicate the diameter of a circle and the radius of an arc.
On your answer sheet, sketch the following hole symbols.
A. Hole depth
B. Countersunk hole
C. Counterbored or spotfaced hole
When associated with the diameter of a circle, a leader always points to what?
When dimensioning the multiview drawing of a cylinder, the diameter and length should be dimensioned in which view?
Explain the different types of units used to express angular dimensions.
Define
dual dimensioning
.
What is the tolerance of the dimension 1.45±.05″?
Rewrite the limit tolerance 4.23–4.27 as an equal bilateral tolerance.
A(n) _____ is an exact point, axis, plane, or surface from which features of a part are located.
Briefly describe some of the factors to consider when creating a dimension style for use in a CAD drawing.
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