Unit 15 Geometric Dimensioning and Tolerancing 279 Copyright Goodheart-Willcox Co., Inc. Name _______________________________________________ Date _ ________________ Class __________________ Unit Review KNOW AND UNDERSTAND Answer the following questions using the information provided in this unit. ______ 1. True or False? One of the benefits of GD&T is increased productivity. ______ 2. True or False? Form tolerances are related to datums. ______ 3. A circularity tolerance is a type of _____ tolerance. A. form B. orientation C. profile D. runout ______ 4. True or False? The geometric characteristic symbol is shown after the allowable tolerance in a feature control frame. ______ 5. The theoretically exact location of a feature of size defined by basic dimensions is known as the _____ position. A. fixed B. true C. default D. required ______ 6. True or False? Datum targets are specific points, lines, or areas on a part used to establish a datum. ______ 7. True or False? At MMC, an internal feature is at its high size limit. ______ 8. True or False? At LMC, an external feature is at its low size limit. ______ 9. A _____ tolerance for a flat surface establishes a tolerance zone formed by two parallel planes. A. circularity B. cylindricity C. straightness D. flatness ______ 10. Which of the following is not an orientation tolerance? A. Angularity B. Flatness C. Parallelism D. Perpendicularity ______ 11. True or False? Parallelism is a condition in which a surface or axis is at a right angle to a datum plane or datum axis. ______ 12. Position tolerancing increases the area of a tolerance zone by 57% by using a _____ tolerance zone. A. round B. square C. rectangular D. None of the above. ______ 13. A _____ tolerance is used to control variation of the individual elements defining a surface. A. cylindricity B. profile of a surface C. total runout D. profile of a line ______ 14. True or False? Circular runout provides composite control of all surface elements of a feature simultaneously. ______ 15. A _____ tolerance specification requires use of a dial indicator to make tolerance measurements. A. perpendicularity B. total runout C. straightness D. position