ASSIGNMENT  2 Textbook  Assignment: "Machine Drawings" and "Piping Systems," chapters 4 and 5. 2-1. 2-2. 2-3. 2-4. 2-5. 2-6. What  method  of  indicating  tolerance allows  a  variation  from  design specifications  in  one  direction only? 1. Unilateral 2. Bilateral 3. Limited  dimension 4. Minimum value What letters of the alphabet may NOT be used in a datum reference? 1. A, C, D 2. F, I, O 3. I, O, P 4. I, O, Q The  permissible  variation  of  a  part is known as 1. limited  dimensioning 2. tolerance 3. geometrical   characteristic 4. a  datum  reference View B of figure 4-1 in the textbook  indicates  what  method  of showing  tolerance? 1. Limited   dimensioning 2. Unilateral 3. Bilateral 4. Geometrical   tolerance Terms  such  as  roundness,  flatness, symmetry, and  true  position describe  the  geometrical characteristics  of 1. surfaces 2. angles 3. reference  points 4. a  feature  control  frame Fillets are used to prevent chipping and sharp edges. 1. True 2. False IN ANSWERING QUESTIONS 2-7 THROUGH 2-12, SELECT  FROM  THE  FOLLOWING  LIST  THE  TERM THAT IS DESCRIBED IN THE QUESTION. 2-7. 2-8. 2-9. 2-10. 2-11. 2-12. A. Fillets B. Rounds C. Slots  and  slides D. Key E. Keyway F. Keyseat A slot or groove on the outside of a part into which the key fits. 1. A 2. C 3. D 4. F Specially shaped parts mated together  but  still  movable. 1. A 2. B 3. C 4. D An item placed in a groove or slot between a shaft and a hub to prevent  slippage. 1. C 2. D 3. E 4. F A slot or groove on the inside of a cylinder, tube, or pipe. 1. C 2. D 3. E 4. F Items normally used to increase the strength of a metal corner and to reduce the possibility of a break. 1. A 2. B 3. C 4. D Edges  or  outside  corners  machined to prevent chipping and to avoid sharp  edges. 1. B 2. C 3. D 4. E 8