Mechanical Drawing Dimensioning Techniques Quiz

What is the purpose of the sixteenth inch gap from the green line to the actual part in dimensioning?

• To ensure the accuracy of the dimension

• To align the dimension with the object line

• To create a visual separation between the part and the dimension

• To indicate where the part ends and the dimension begins

What are the lines with arrowheads on the end called in dimensioning?

• Extension lines

• Object lines

• Dimension lines

• Center lines

How far should dimension lines be kept from the object according to the rules of dimensioning?

• At least 1 inch

• At least 1/2 of an inch

• At least 1/4 of an inch

• At least 3/8 of an inch

In which units should dimensions be kept for machine drawings?

• Decimal inches or millimeters

• Feet or centimeters

• Meters or yards

• Kilometers or miles

What should be done if dimension lines overlap on top of the actual dimensions?

• Increase the gap between the dimension lines

• Remove the dimension lines

• Leave them as they are for accuracy

• Modify the dimensions to pull some numbers out

When should an overall dimensioning be placed outside of the smaller dimensions?

• Never

• Only if the smaller dimensions are crowded

• Only if the smaller dimensions are difficult to read

• Always

What should be given for a full complete circle in dimensioning?

• Area

• Circumference

• Radius

• Diameter

What should not be used as a dimension line in dimensioning?

• Object line

• Arrow line

• Center line

• Extension line

Why should diameter dimensions not be placed in the shaded area of a part?

• For aesthetics and readability

• To save space

• To avoid confusion

• To prevent smudging