Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Dimensioning Questions
An extension line is a thin, dark, solid line that extends from a point on the drawing to which a dimension refers.
When designing mechanical devices, the designer must consider what the allowable variation in size between mating parts can be.
Dimension lines should not cross extension lines.
The drafter should always try to dimension to the profile view of an object when possible.
When extension lines or centerlines cross visible object lines, gaps should not be left in the lines.
Where the decimal-inch dimension is used, a zero is not used before the decimal point of values less than 1.
The inch is the commonly used unit for most metric engineering drawings.
It is more difficult to manufacture a part designed using two decimal places than the same part using four decimal places.
Longer dimension lines are nearest the object outline.
Avoid dimensioning to hidden lines.
Most mechanical drawings will include tolerance information in or near the drawing title block.
Typically, all dimension values and notes are lettered horizontally and should read from the bottom of the sheet.
A set of two mutually perpendicular datum planes is required for coordinate dimensioning.
When a finished part is measured, it may vary slightly from the exact dimension specified.
The American Society of Mechanical Engineers provides a set of common standards used by industry for placement of dimensions.
Fillet radii can be given in a general note.
It is permissible to letter a dimension value over any line on the drawing.
Although an engineer has placed dimensions in specific locations the drafter has the freedom to arrange them as he deems necessary.
In a group of parallel dimension lines, the dimension values should be staggered.
By adding dimensions to a technical drawing the drafter is providing information about the size and location of features of a part.
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