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MODIFIERS AND DIMENSIONING DATUM

Total questions: 14

Worksheet time: 7mins

Name
Class
Date
1.

Which symbol is used to identify datums?

a)

Statistical Tolerance Symbol

b)

Datum Feature Symbol

c)

Datum

d)

Free State Condition

2.

The second compartment of a feature control frame is used for the....

a)

Geometric Characteristic Symbol

b)

Geometric Tolerance

c)

Datum Features

d)

All of the above

3.

A surface, plane, or axis considered theoretically perfect.

a)

Datum

b)

MMC

c)

LMC

d)

RFS

4.

Interprate the feature control frame

a)

The perpendicularity of the feature must be within a 0.2 tolerance zone relative to Datum A and B at maximum material condition

b)

The perpendicularity of the feature must be within a 0.2 diametrical tolerance zone relative to Datum A and B

c)

The perpendicularity of the feature must be within a 0.2 diametrical tolerance zone relative to Datum AB

d)

The perpendicularity of the feature must be within a 0.2 tolerance zone

5.

The importances of GDnT?

a)

Saves money

b)

Ensures design, dimension, and tolerance requirements as they relate to the actual function

c)

Provides uniformity

d)

A universal understanding of the symbols instead of words

6.

The definition of allowance

a)

The condition where a size feature contains the maximum amount of material within the stated limits of size

b)

Nominal dimension from which tolerances are derived

c)

Difference between the least material condition of two mating parts

d)

Difference between the maximum material condition of two mating parts

7.

This symbol represents

a)

Position

b)

Roundness

c)

Cylindricity

d)

Circular Runout

8.
What does this symbol represent?
a)
True Position
b)
Cylindricity
c)
Circularity
d)
Concentricity
9.
What does this symbol represent?
a)
Parallelism
b)
Straightness
c)
Total runout
d)
Runout
10.
What does this symbol represent?
a)
Parallelism
b)
Straightness
c)
Flatness
d)
Symmetry
11.
What does this symbol represent?
a)
True Position
b)
Cylindricity
c)
Circularity
d)
Concentricity
12.
What does this symbol represent?
a)
Profile of a surface
b)
Profile of a line
c)
Profile of an edge
d)
Profile of an arc
13.

What is CMM

a)

Coordinate-measuring Machine

b)

Coordination of Milling Machine

c)

Coordinates of Milling Maximum

d)

Coordinate-measuring Mill

14.

If there is no M or L in the feature control frame, what would be the default modifier?

a)

Bilateral tolerance

b)

Regardless of feature size

c)

No modifier

d)

Maximum material condition