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Test 9B - R42 Name TAVMM Let/iw’t'eé Date/0/3/0 7...

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Unformatted text preview: R42 Name: TAVMM Let/iw’t'eé Date: /0/3//0 7 Section L{ S Ver 2 Read each question carefidbz, then print the letter of the correct answer on the line next to the question. 1. f 2 The lathes in the MMA machine shop have which type of taper attachment? 6 Telescoping ' n _ Plain c. Offset , . . u ‘ d. Compound ‘vw . 3 2. {l The taper produced by a lathe taper attachment is determined by setting the @ guide (swivel) bar b. automatic cross feed c, tailstock off center d. compound rest angle 3. 1 A order to convert taper per foot to taper per inch, you should . a divide by 12 , . . , .. subtract 12 1:65: 5 fl [W } E3,“ add 12 t (H? V ‘3 .1 . multiply by 12 [ if; epcr 4. b The 60 degree taper angle machined on work supported by lathe centers is most easily machined by the . a, taper attachment compound rest c. tailstock set over method d. headstock set over method _ 5 . 5 Calculate the Taper per Foot of the workpiece with a large diameter of 1 -1/2 inches, a small diameter of 1—3/8 inches, :1 taper 1e of 4 inches, and an overall length of 4 inches. 3 Ll. ;( It" a. 5/16 inch i 3i" M 3/8 inch 0( c. .625 inch 53; 6. b Calculate the tail stock offset for a workpiece with a large diameter of 1-1/2 inches, 21 ' I 5? small diameter of 1-3/8 inches, a taper length of 4 inches, and an overall length of 4 / inches. g ’ 1L» / W Ag f? a, .219 0 3 {f , /§9.—,/fl5>< 3.9 $21.01. 4%???“ is 1.3 5 d. 7/8inch q H {5 O 5 7. Calculate the Taper per Foot of the workpiece with a large diameter of 2 inches, a small diameter of 1-3/4 inches, a taper length of 4 inches, and an overall length of 10 inches. 3.. 5/8 inch ‘ M... , m. .. ,. e .. ,. . ..,__ we.“ h b. 5/16 inch {M { ..,..-—- ' ‘_ ....__..J c. .625 inch ” “ ' i 3/: inch 8. 0\ Calculate the tail stock offset for a workpiece with a large diameter of 2 inches, 21 small diameter of 1-3/4 inches a taper length of 4 inches, and an overall length of 10 inches .3125 inch .625 inch 0. 3/4 inch (1. 7/8 inch X 9. g . A piece of tapered round stock is 36 inches long, 4 inches in diameter at the large end and . 2-1/2 inches in diameter at the small end. What tailstock set over was used to machine the taer‘? 1.5 00 inch 2.500 inch 10. 0\ Leathers are necessary for vertical or overhead welding above shoulder level. a. True b. False 11. i Which of the following is not an advantage of using a smaller electrode for out-of- position welding? Molten metal 1n the weld pool 15 easier to control. Q Higher amperage can be used. c. Lower amperage can be used. d. A smaller weld pool is created. 2. 0K Electrodes to be used for out-of—position welding include all electrodes that have a “I” or “2” in the second to last digit. Examples include E6010, E6013, E7016, E7024, and E8028 a. True was» 13. [2 The most common fillet welds made are in joints. a. horizontal lap and T- c. overhead (1. vertical 14. ( i Tapers are usually expressed in a. taper per foot b. taper per inch c. degrees (1. all of the above xé ( 2 How 15 the electrode angles used for vertical and overhead fillet welding compare to the / angles used when welding 1n the flat position? a. Forehand method is used for vertical and overhead welding b. The electrode is perpendicular to the weld face 0. A smaller an 1e from the - - d There 1s no difference in the angles used ( 16. Q On multiple-pass horizontal fillet welds, the lowest weld pass in a layer should be made first. @‘ True b False 17. 0\ A 45 degree work angle and a 20 degree travel angle are used for horizontal fillet welds? True False 18. Q What does slag in a vertical weld do Weakens the weld b. Completes the weld faster 0. Adds alloying elements (1. Has no effect on the weld 19. b Material trapped in a multiple pass Weld would indicate what defect? a. Lack of penetration Slag inclusion c. Overlap d. Porosity e. Undercut 20. E The entire whip motion should take only seconds. a. 0~1 12 c. 3—4 d. None of the above. ...
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