Question 1

A circle contains:
A)360 degrees
B)90 degrees
C)180 degrees
D)270 degrees

Accepted Answer

A circle is defined as having 360 degrees in total, which is the sum of all the angles around its center.

Question 2

Equal-sized holes that are unequally spaced on a bolt circle require:
A)A hole size dimension shown for each hole
B)An angular dimension, even for those shown to be vertically or horizontally in line with the center of the bolt hole circle
C)Angular dimensions for each hole that is not shown to be vertically or horizontally in line with the center of the bolt hole circle
D)Dimensioning that is no different than that for equally spaced hole

Accepted Answer

Angular dimensions are necessary for each hole that does not align vertically or horizontally with the center of the bolt hole circle to accurately convey their positions.

Question 3

In a bolt hole circle consisting of five equally spaced holes, the holes will be:
A)72 degrees apart
B)90 degrees apart
C)36 degrees apart
D)60 degrees apart

Accepted Answer

In a circle, the total degrees are 360. For five equally spaced holes, divide 360 by 5, which equals 72 degrees apart.

Question 4

A revision block should include:
A)A description of the change that was made
B)A revision number or letter
C)The date of the change
D)The name or initials of the person making the change
E)All of the above

Accepted Answer

A revision block should include all of the mentioned elements: a description of the change, a revision number or letter, the date of the change, and the name or initials of the person making the change. These components ensure clear communication and documentation of changes made to a document or drawing.

Question 5

If four holes are equally spaced on a bolt circle, but two holes are different sizes than the other two:
A)They are dimensioned the same as a pattern that included holes that are of the same size
B)Additional dimensions and leader lines are required
C)This is not a good practice, and should not be specified

Accepted Answer

When holes on a bolt circle are of different sizes, additional dimensions and leader lines are required to specify the sizes and locations of the differing holes accurately. This ensures clarity in the design specifications.

Question 6

For a bolt hole circle that is dimensioned using coordinate dimensions, the bolt circle diameter is dimensioned just the same as for bolt circles that do not show coordinate dimensions.

Accepted Answer

When a bolt hole circle is dimensioned using coordinate dimensions, each hole's location is specified by its x and y coordinates from a reference point, rather than specifying the diameter of the circle on which the holes lie. This is different from directly dimensioning the bolt circle diameter, which is common when the bolt holes are equally spaced around a circle.

Question 7

Holes located on a bolt hole circle may be equally spaced from each other or unequally spaced

Accepted Answer

Bolt hole circles can have holes that are equally spaced for uniform distribution or unequally spaced to meet specific design requirements or constraints.

Question 8

If a drawing dimension is changed, but the print is not redrawn:
A)No special notation is required
B)A "Not to Scale" symbol should be shown for those dimensions that require them
C)Users will be confused, so this should never happen

Accepted Answer

When a drawing dimension is changed without redrawing the print, a "Not to Scale" symbol or notation is typically used to indicate that the dimension shown may not accurately reflect the scale of the drawing. This helps prevent confusion or misinterpretation of the drawing.

Question 9

The place on a print where a revision was made may be indicated by a letter or number enclosed in a circle or triangle.

Accepted Answer

In technical and engineering drawings, revisions are often marked with a letter or number enclosed in a circle, triangle, or another shape to indicate where changes have been made to the original design.

Question 10

Coordinate dimensions are used for bolt hole circles that will be produced on machines equipped with digital readouts.

Accepted Answer

The answer of Coordinate dimensions are used for bolt hole...

Question 11

A bolt circle is usually dimensioned by specifying the diameter of the circle.

Accepted Answer

A bolt circle is typically dimensioned by specifying the diameter of the circle on which the centers of the bolt holes are located, allowing for precise placement of the holes.

Quiz 15: Hole Patterns and Revision Blocks

A circle contains:

Equal-sized holes that are unequally spaced on a bolt circle require:

In a bolt hole circle consisting of five equally spaced holes, the holes will be:

A revision block should include:

If four holes are equally spaced on a bolt circle, but two holes are different sizes than the other two:

For a bolt hole circle that is dimensioned using coordinate dimensions, the bolt circle diameter is dimensioned just the same as for bolt circles that do not show coordinate dimensions.

Holes located on a bolt hole circle may be equally spaced from each other or unequally spaced

If a drawing dimension is changed, but the print is not redrawn:

The place on a print where a revision was made may be indicated by a letter or number enclosed in a circle or triangle.

Coordinate dimensions are used for bolt hole circles that will be produced on machines equipped with digital readouts.

A bolt circle is usually dimensioned by specifying the diameter of the circle.