Deck 17: Tolerances Unilateral and Bilateral, Decimal Dimensions

Question 1

Where is the decimal system of dimensioning used and why?

Answer 1

The decimal system of dimensioning is used almost exclusively in industry because of the ease with which computations can be made. In addition, the dimension can be measured with precision instruments to a high degree of accuracy and is required for Computer Numerical Control (CNC) applications.

Question 2

Explain decimal tolerances.

Answer 2

Decimal tolerances can be applied in both the English and the metric systems of measurement. Tolerances on decimal dimensions that are expressed in terms of two, three, four, or more decimal places may be given on a drawing in several ways. One of the common methods of specifying a tolerance that applies on all dimensions is to use a note.

Question 3

____ tolerances applied to dimensions mean that the dimensions may vary from a larger size (+) to a smaller size (-) than the basic dimension (nominal size).

A) Bilateral
B) Multilateral
C) Binary
D) Variable

Answer 3

A

Question 4

The accompanying figure is an example of a ____ tolerance.

A) unilateral
B) strict
C) bilateral
D) loose

Question 5

Describe the two classifications of tolerances that the limits of accuracy to which a part is to be produced may fall.

Question 6

The accompanying figure is an example of a ____ tolerance.

A) bilateral
B) strict
C) loose
D) unilateral

Question 7

How are tolerance limits expressed on a drawing?

Question 8

A dimension is said to have a(n) ____ tolerance when the total tolerance is in one direction only, either (+) or (-).

A) bilateral
B) unilateral
C) singular
D) inverted

Question 9

One of the common methods of specifying a tolerance that applies on all dimensions is to use a(n) ____.

A) annex
B) appendix
C) note
D) index

Question 10

The smaller size on a tolerance is called the ____.

A) lower-limit
B) base value
C) minimum-limit
D) lower bound

Question 11

Briefly explain the decimal dimensioning system.