451 CH 6
12. True or False? A straightness geometric tolerance can be applied to a portion of a long part by placing a phantom line next to the view at the desired straightness length and dimensioning the length of the phantom line.
F
16. True or False? A circularity tolerance establishes a tolerance zone formed by two concentric cylinders within which the actual surface must lie.
F
17. True or False? Circularity is always specified to apply at maximum material condition.
F
19. True or False? Restrained condition refers to the condition in which no external forces are applied to a part except gravity.
F
20. True or False? A cylindricity tolerance establishes a tolerance zone formed by two concentric circles within which the actual surface must lie.
F
3. True or False? Form tolerances are related to datums.
F
6. True or False? A straightness tolerance used to control line elements on the surface of a cylindrical feature is represented by placing the feature control frame below the diameter dimension and placing a diameter symbol in front of the tolerance value to specify a cylindrical tolerance zone.
F
7. True or False? When using the independency symbol with a size dimension and a surface straightness specification, the straightness tolerance cannot be larger than the size tolerance.
F
9. True or False? Derived median line straightness is specified on a drawing by connecting the feature control frame to the surface with a leader.
F
1. True or False? Form tolerances specify a zone in which the dimensioned feature, the feature's line elements, the feature's derived median line, or the feature's derived median plane must be controlled.
T
10. True or False? When straightness per unit of measure is applied to a feature or part, the specified geometric tolerance over the total length is greater than the unit tolerance.
T
11. True or False? When straightness is applied to control a flat surface, the feature control frame is placed in the view where the elements to be controlled appear as a straight line.
T
13. True or False? A flatness tolerance establishes the distance between two parallel planes within which the surface or derived median plane must lie.
T
14. True or False? A flatness geometric tolerance applied to a size dimension can be specified to apply on an RFS, MMC, or LMC basis.
T
15. True or False? Specific area flatness can be used when a large surface must be flat in a relatively small area.
T
18. True or False? A circularity tolerance is permitted to be larger than the size tolerance when the free state symbol is applied to the tolerance.
T
2. True or False? Form tolerances are applied to single features or elements of single features.
T
4. True or False? Straightness is a condition where an element of a surface or a derived median line is in a straight line.
T
5. True or False? A straightness tolerance specifies a zone within which the required surface element or derived median line must lie.
T
8. True or False? The independency symbol is used to show that perfect form of a regular feature of size is not required at MMC or LMC.
T
13. _____ is the condition of a surface where all the elements are in one plane. A. Flatness B. Circularity C. Straightness D. Cylindricity
A
4. Given a shaft with ∅.750±.005 X 3.750 LG dimensions and a surface straightness tolerance of .002 used to control line elements, what is the allowable straightness tolerance when the actual shaft measures ∅.755? A. .000 B. .002 C. .007 D. .012
A
11. _____ can be applied as a means of preventing an abrupt surface variation within a relatively short length of the feature. A. Derived median line straightness B. Unit straightness C. Surface straightness D. Total straightness
B
12. When a straightness tolerance is applied to a flat surface, the tolerance controls the _____. A. feature axis B. single line elements on the surfaceC. derived median line D. derived median plane
B
15. _____ is a surface condition in which all points on any cross section taken perpendicular to the axis of a cylinder or cone, or through the common center of a sphere, are equidistant from the axis or common center. A. Flatness B. Circularity C. Straightness D. Cylindricity
B
17. A _____ tolerance establishes a tolerance zone formed by two concentric circles within which the actual surface must lie. A. flatness B. circularity C. straightness D. cylindricity
B
2. Which material condition applies for straightness unless otherwise specified? A. MMC B. RFS C. LMC D. LMB
B
20. Parts that may have dimensional change due to thin wall characteristics are referred to as _____ parts. A. translational B. nonrigid C. nominal D. simulated
B
3. When _____ is specified, the feature control frame is placed below the diameter dimension. A. surface straightness B. derived median line straightness C. surface flatness D. unit flatness
B
5. Given a shaft with ∅.750±.005 X 3.750 LG dimensions and a surface straightness tolerance of .002 used to control line elements, what is the allowable straightness tolerance when the actual shaft measures ∅.750? A. .000 B. .002 C. .007 D. .012
B
6. Given a shaft with ∅.750±.005 X 3.750 LG dimensions and a derived median line straightness tolerance of ∅.002 RFS, what is the allowable straightness tolerance when the actual shaft measures ∅.755? A. ∅.000 B. ∅.002 C. ∅.007 D. ∅.012
B
7. Given a shaft with ∅.750±.005 X 3.750 LG dimensions and a derived median line straightness tolerance of ∅.002 RFS, what is the allowable straightness tolerance when the actual shaft measures ∅.745? A. ∅.000 B. ∅.002 C. ∅.007 D. ∅.012
B
8. Given a shaft with ∅.750±.005 X 3.750 LG dimensions and a derived median line straightness tolerance of ∅.002 at MMC, what is the allowable straightness tolerance when the actual shaft measures ∅.755? A. ∅.000 B. ∅.002 C. ∅.007 D. ∅.012
B
1. _____ is a condition where an element of a surface or a derived median line is in a straight line. A. Flatness B. Circularity C. Straightness D. Cylindricity
C
19. _____ refers to the distortion of a part after removal of forces applied during manufacturing. A. Maximum material condition B. Restrained condition C. Free state variation D. Average diameter
C
9. Given a shaft with ∅.750±.005 X 3.750 LG dimensions and a derived median line straightness tolerance of ∅.002 at MMC, what is the allowable straightness tolerance when the actual shaft measures ∅.750? A. ∅.000 B. ∅.002 C. ∅.007 D. ∅.012
C
10. Given a shaft with ∅.750±.005 X 3.750 LG dimensions and a derived median line straightness tolerance of ∅.002 at MMC, what is the allowable straightness tolerance when the actual shaft measures ∅.745? A. ∅.000 B. ∅.002 C. ∅.007 D. ∅.012
D
14. Which type of line is used to outline an area of specific area flatness? A. Object B. Center C. Phantom D. Chain
D
16. A _____ tolerance establishes a tolerance zone formed by two perfectly concentric cylinders within which the actual surface must lie. A. flatness B. circularity C. straightness D. cylindricity
D
18. _____ represents a control that covers both circular and longitudinal elements at the same time. A. Flatness B. Specific area flatness C. Circularity D. Cylindricity
D
