Deck 13: Geometric Dimensioning and Tolerancing

Question 1

Geometric dimensioning specifies the allowable variation of a feature from the perfect form.

Answer 1

True

Question 2

The concept that some parts vary in form beyond the MMC size limits after manufacture is:

A)tangent plane
B)projected tolerance zone
C) free state variation
D) between symbol

Answer 2

C

Question 3

The first symbol in a feature control symbol is the geometric characteristic symbol.

Answer 3

True

Question 4

Rule #1 states: "Where only a tolerance of size is specified, the limits of size of an individual feature define the extent to which variations in its geometric form, as well as size, are allowed."

Question 5

The three types of size tolerances are unilateral, location, and runout.

Question 6

The easiest method of inspecting a profile tolerance is using a dial indicator.

Question 7

The term regardless of feature size is a modifier that tells machinists that a tolerance of form or position or any characteristic must be maintained, regardless of the actual produced size of the object.

Question 8

A datum is established on a cast surface by a "flag" or a symbol.

Question 9

A minimum if three datum target points in any arrangement are required to establish the primary datum.

Question 10

A statistical tolerancing symbol is a symbolic means of indicating that the stated tolerance is based on statistical tolerancing control.

Question 11

The term least material condition means:

A)the opposite of MMC
B)a condition of a feature in which it contains the least amount of material
C) the theoretically exact location of a feature
D) both A and B

Question 12

A runout tolerance requires a datum reference.

Question 13

Datums are components of a part such as a hole, slot, surface, or boss.

Question 14

Which of the following is not true regarding flatness?

A)It differs from straightness.
B)The term flatness is interchangeable with the term straightness.
C) When flatness is the feature control, a datum reference is neither required nor proper.
D) Flatness is specified when size tolerances alone are not sufficient to control the form and quality of the surface.

Question 15

The MMC of an internal feature is the smallest allowable size.

Question 16

Which of the following feature controls must have a datum reference?

A)flatness
B)straightness
C) cylindricity
D) parallelism

Question 17

The need to tolerance more than just the size of an object led to the development of geometric dimensioning and tolerancing.

Question 18

Tolerancing means setting acceptable limits of deviation.

Question 19

The tolerance zone for flatness lies on a straight line on a surface of an object.

Question 20

Which of the following is not true regarding feature control symbols?

A)The order of data in a feature control frame is important.
B)The first element is the feature control symbol.
C) Various feature control elements are separated by //.
D) Datum references are listed in order from left to right.

Question 21

To identify a hypothetical three-dimensional frame a(n) _____ is used.

A)feature control frame
B)projected tolerance zone modifier
C) all around symbol
D) datum reference frame

Question 22

This feature control is normally used for controlling arcs and curves.

A)circularity
B)profile
C) angularity
D) cylindricity

Question 23

This type of tolerance is used to locate features of parts that are to be assembled and mated.

A)positioning tolerance
B)symmetry tolerance
C) concentricity tolerance
D) runout tolerance

Question 24

This type of tolerance is used for parts made up of several subparts all sharing the same center line or axis.

A)profile tolerance
B)runout tolerance
C) symmetry tolerance
D) concentricity tolerance

Question 25

To control the variation in a brass bell, which feature control symbol would be used?

A)profile
B)concentricity
C) flatness
D) parallelism

Question 26

A datum identification symbol is indicated within:

A)the feature control box
B)a circle
C) a modifier box
D) a rectangle

Question 27

To indicate the exact location of a center line, the _____ is indicated.

A)concentricity
B)circularity
C) position tolerance
D) datum point

Question 28

To indicate that a specified tolerance applies to the entire part, use the _____ symbol.

A)between
B)all around
C) tangent plane
D) free state variation

Question 29

The maximum material condition of a rod that is 1.25 ±.02 is:

A)1.23
B)1.24
C) 1.25
D) 1.27

Question 30

A datum target is used when:

A)there is not enough detail to merit the use of a feature control frame.
B)it is not practical to identify an entire surface as a datum feature.
C) a datum point is not seen in any of the three primary views.
D) the flatness of a surface has too many irregularities.

Question 31

A tangent plane modifier would not include which of the feature control symbols?

A)flatness
B)circular runout
C) parallelism
D) straightness

Question 32

A modifier symbol is enclosed with a:

A)square
B)circle
C) rectangle
D) triangle

Question 33

This feature control specifies that all points on a surface must be an equal distance from a datum.

A)perpendicularity
B)concentricity
C) parallelism
D) angularity

Question 34

The least material condition of a hole that is 1.25 -.03 is:

A)1.22
B)1.25
C) 1.28
D) 1.265

Question 35

Designers must consider all of the following factors when establishing datums except:

A)function of the part
B)MMC size limits of the part
C) manufacturing processes
D) how the part will be inspected