GDT Basic Skill Survey

Name: ___________________________ Company: ________________________Date: _____________ Phone: ____________ Email: _________________________________________________ Basic Level GD&T Skills Survey Questions 1-16 are multiple choice questions. Circle the best answer. 1. The use of GD&T helps to assure which of the following? A. Function B. Form of the feature C. Fit between mating parts D. Location of features of size E. All of the above 2. What is the MMC of a shaft size of .500 +/- .005? A. .500 B. .495 C. .505 D. None of the above 3. A datum target point is simulated with a __________ gage pin. A. spherical-tipped B. cylindrical C. conical-tipped D. flat-tipped 4. What type of fastener formula should be used when one part has a tapped hole and the mating part has a clearance hole? A. Threaded formula B. Fixed Fastener formula C. Floating Fastener formula D. None of the above 5. If a .62-.64mm hole is located with .05mm positional tolerance modified at MMC, and the hole diameter measures .63, what is the total permissible positional tolerance? A. .04 B. .05 C. .055 D. .06 © The QC Group, Inc. All rights reserved 5950 Clearwater Drive Suite 300, Minnetonka, MN 55343 • (952) 895-1150 ph (952) 895-1152 fax Rev. 3 Page 1 of 4 60 width D. . the centerplane of a 62 wide boundary 10.0 C.3 D. Minnetonka. . . 1. A. perfect form at MMC is required B. 2.0 © The QC Group. Flatness C. 1. 9. How many points of contact are required to establish a secondary datum on a rectangularshaped part? A.4 D. RFS is optional Questions 9 . perfect form at MMC not required C. A. 4. 0. . MN 55343 • (952) 895-1150 ph (952) 895-1152 fax Rev. A. . A. 1 B. a planar datum C. 3 D. 3. . Rule #1 states that. the centerplane of the 62 . 2.0 C. The MMC concept does not apply to A. 2 C. The amount of bonus tolerance permissible for the Position control is.4 B. Perpendicularity B. 1. .11 refer to the drawing at the right. Parallelism D. RFS is the default condition D. The amount of datum shift permissible for the Position control is. All of the above 7.0 B. Inc. The right edge (plane) of the part B. 4 8.0 11. 3 Page 2 of 4 .6. Datum A is. . All rights reserved 5950 Clearwater Drive Suite 300. Tolerance zone is projected to the stated depth D. No bonus tolerance is available C. Inc. is illegal © The QC Group. 0. All rights reserved 5950 Clearwater Drive Suite 300.2 C. The tolerance is subject to accumulation B. The parallelism control. . . 0 D. 0. The maximum amount of datum shift permissible with the TOP control is. . A. effective in reducing scrap D. A. All of the above 13. . 14. Title Block B. illegal – this is impossible to manufacture B. 0. The tolerance value in the perpendicularity control is. applied at RFS C. MN 55343 • (952) 895-1150 ph (952) 895-1152 fax Rev. A. . . does not control the flatness of the surface D. limits the flatness of the surface to 0.1 B. Revision Block C. applied at LMC 16. overrides Rule #1 C. A.1 B. Feature Control Frame D. None of the above Questions 14-16 refer to the drawing to the right.12. A. Minnetonka.6 15. The _______________ contains the tolerances for geometric controls. Whenever a Position control is used without a modifier. 3 Page 3 of 4 . 25 are true or false. The tolerance zone for a Straightness control is two parallel lines. size and location. All rights reserved 5950 Clearwater Drive Suite 300. The tangent plane modifier is not used with the flatness control. The tolerance zone for a Circularity is always two coaxial cylinders T F 18. 3 Page 4 of 4 . T F 24. A feature control frame must contain at least one datum reference and no more than three. T F 25. T F 21. Inc. Minnetonka. Coordinate tolerancing should be used to locate critical holes. T F 23. MN 55343 • (952) 895-1150 ph (952) 895-1152 fax Rev. Circle the correct answer. Basic dimensions are not used to locate datum targets. Tolerances for basic dimensions are located in the title block.3 is a plus-minus tolerance. orientation.2 – 12. 17. T F 22. Profile of a Surface controls form. 19. 12. T F T F 20. T F © The QC Group.Questions 17 .