Test 3B - J ’ I t” J Name r" Section ‘v 1? Ver 2 Read each question carefully then print the letter of the correct answer on the line

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Unformatted text preview: J ’ I t” J Name : r" Section ‘v 1;?» Ver 2 Read each question carefully, then print the letter of the correct answer on the line next to the question. 1. The greater the size of the work to be held between centers and the heavier the cuts, a. the deeper the center drilled hole b. the shallower the center drilled hole 0 the faster the work should be turned K‘d. 5 the larger the center drilled hole 2. {:7 Which of the lathe operations listed is best done with the carriage locked in position? a. Turning work held between centers. b. Threading internal threads. ; Facing work held in a chuck. “d: Boring an angled hole 3, 5 Facing from the outside on a workpiece will produce a finish than facing from inside to outside, a. better rougher fie. convex d, concave 4. Calculate the RPM for turning a 10-inch diameter piece of 52100 steel. T he cutting speed for a high speed steel turning tool in 52100 steel is 50 SFPM, f... 200 3/ 1,: . _ ‘1 1’ Kt“ b. 120 Q‘J‘ = ‘“‘ , c. 480 p _ ‘ d. 620 N £19": J K 5. The crossslide is calibrated for double depth on the micrometer dial, if the dial indicates a movement .010” the diameter of the workpiece is reduced by a. .020 b, .050 ca.“ .005 (xii. .010” \M \ 6, -’/ i What would the crossfeed s acin or distance betWeen the tool marks on a work iece be ._____ P g P if the feed on the quick change gear box indicated .0150 a; .030 b. .045 d. 9 l 7. 5’1 The main function of the lathe half-nut lever is to facilitate: at. h Counterboring 7 Threading c. Taper turning d. Straight turning ; 8. (it? What lever is shifted in order to change direction of the lead screw? a. Feed Change Lever b. Gearbox Lever c. Half—nut Lever Feed Reverse Lever 9. L" To shift to the low speed range on a belt drive lathe with a step cone pulley, you should a. engage the pulley with the lockpin and engage the back gear lever. h; disengage the pulley using the lockpin and disengage the back gear lever. c} disengage the pulley using the lockpin and engage the back gear lever. d. engage the pulley with the lockpin and disengage the back gear lever. 10. [/2 In what kind of chuck are square or rectangular workpieces set up for center drilling? a“. 3—j aw universal fl)?! 4-jaw independent ‘6. Collet d. 6-jaw universal I. ll. \. A carburizing flame is produced when too little oxygen is present and three flame areas are visible, a.‘ True b. False 12. How far should the oxygen cylinder valve be opened for welding or cutting? a. 1/16—1/8 turn b. l/8—l/4 turn 1[1—1/2 turn ' all the way 13, C If the high-pressure gauge continues to drop in pressure after the regulator is turned off, where is the leak? r. I a, Between the regulator and the torch / J; j b. In the regulator itself ;’ \Mx @ Between the regulator and the cylinder ( j/ K 14. ’ Purging the oxyfuel gas welding or cutting outfit is done by quickly opening and closing the cylinder valves to clean the cylinder nozzles. {3. True ‘ W 15. xi Xx The regulator is closed when the adjusting screw is turned and feels _' a.“ counterclockwise, loose b, clockwise, tight 16. i 1 Which of the following is a correct description of a fuel gas hose? " i a. A fuel gas hose is green in color and has right handed threaded nuts. b“; A fuel gas hose is green in color and has left handed threaded nuts ’ A fuel gas hose is red in color and has a machined groove around right habded threaded nuts ' v A fuel gas hose is red in’colorand has a machined groove around left handed ’\ y 17. in : Before attaching the regulator, the cylinder must be cleaned to prevent dirt /' ‘x from iliiring the regulator, b. p ug co valve 18. 3 113ml) flame has a smooth, bullet~shaped inner 3a.? neutral 1). carburizing cl oxidizing do all of the above / 19. a"? When lihting the welding torch, the acetylene torch valve should be opened _ a \ . p g y“ (Tie-7w- I '5 “e '5 7’ “f c. more than 1 turn 20, 1”" Excessively long hoses (over 25 feet) do not affect the actual gas pressure that reaches the welding torch tip so the pressure reading at the gauge is always accurate. a True _’ b? False ...
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This note was uploaded on 05/01/2008 for the course MENG 101 taught by Professor Mahoney during the Spring '08 term at Mass Maritime.

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Test 3B - J ’ I t” J Name r" Section ‘v 1? Ver 2 Read each question carefully then print the letter of the correct answer on the line

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