Elements 17

1. Which of the following will likely happen if the angle on a drill is less than 59 deg?
A. the drill will make a larger hole
B. the drill will make a smaller hole
c. the hole will take longer to drill and more power is required to drive the drill:
D. the drill will not center properly

2. What is/are the reason(s) of soda being added to water and is used for cooling instead of plain water?
A. it reduces the amount of heat generated
B. it improves the finish
C. it overcomes rusting
D. all of these

3. The lip clearance of a drill should be approximately how many degrees?
Answer:

A. 20 deg. - 25 deg.


B. 12 deg. - 15 deg.


C. 5 deg. - 10 deg.


D. 15 deg - 20 deg.

4. If the cutting edges of a drill are cut at different angles
A. the drill will not cut.
B. the hole will be larger than the drill.
C. the hole will be smaller than the drill.
D. none of these

5. What is the correct cutting angle on a drill for ordinary work?
A. 45 deg.
B. 59 deg.
C. 50 deg.
D. 65 deg.

6. What is the reason why drill "squeals" when cutting?
A. drill being ground improperly
B. insufficient lubrication
C. drill being too hot
D. any of these

7. In what operation where "center drilling" is to be found?
A. drilling a center in an odd-shaped piece of metal
B. drilling and countersinking with one tool
C. centering with one tool and drilling with another
D. drilling a center in a piece of stock in a dril press

8. Which of the following defines "pitch" in threads?
A. the distance of the full length of the thread
B. the distance from a point on one thread to a corresponding point on the next thread measured parallel to the axis
C. the distance from the top of one thread to the bottom of the next thread
D. the distance from the bottom of a head on a bolt to the first thread

9. A tool bit for cutting an American National thread should be ground with what angle?
A. 45 °
В. 60 °
C. 90 °
D. 30 °

10. An approximate safe rule for cutting new pistons for steam pumps is to allow —
A. 0.002" between piston and cylinder for each inch diameter of piston
B. 0.001" between piston and cylinder for each inch diameter of piston
C. 0.010" between piston and cylinder for each inch diameter of piston
D. 0.0001" between piston and cylinder for each inch diameter of piston

11. An approximate safe rule for cutting new piston rings for steam pumps is to make the ring:
A. 1/32" larger in diameter per inch diameter of cylinder
B. 1/16" larger in diameter than that of the cylinder
C. 1/16" larger in diameter per inch diameter of cylinder
D. 0.005" larger in diameter per inch diameter of cylinder

12. What is the approximate gap clearance for new piston rings for steam pumps?
A. 0.003" for each inch diameter of cylinder
B. 0.001" for each inch diameter of cylinder
C. 0.010" for each inch diameter of cylinder
D. 0.050" for each inch diameter of cylinder

13.
The familiar: "3/8-16" in machine shop means what?
A. 6 pieces, 3/8" long
B. gear with 16 teeth and a 3/8" arbor hole
C. 3/8" square, 16" lone
D. 3/8" diameter, 16 threads per inch

14. The work should be held ——
when using a drill press
A. the hand
B. a vise or clamp
C. a gloved hand
D. pliers

15. What is(are) the reason(s) why tapered shanks are used on large drill presses?
A. the drill can be centered more easily
B. the drill can be easily forced out of the sleeve with a drift
C. the shank will not turn when cutting
D. the shank can be reground when worn

16. Which of the following is not a common drill shank?
A. straight
B. fluted
C. taper
D. bit

17. What is the usual cutting angle on a drill for drilling mild steel?
A. 39 deg.
B. 59 deg.
C. 49 deg.
D. 69 deg.

18. When installing a new grinding wheel, always use:
A. blotting paper gaskets on each side of the wheel
B. copper gasket on each side of the wheel
C. only the steel washers provided with the machine
D. none of the above

19. What is the other term for the operation of "truing" a grinding wheel?
A. centering
B. sizing
C. dressing
D. rounding

20. what tool is used to check external pipe threads?
A. plug gage
B. pitch gage
С. thread gage
D. ring gage

21. What tool is used to check internal pipe threads?
A. plug gage
B. pitch gage
C. thread gage
D. ring gage

22. you use a dry grinding wheel for sharpening tool bits, dip the end of the bit in water frequently to prevent
A. burning your fingers
B. annealing the cutting edge of the bit
C. hardening of the tip
D. the tip from crystallizing

23. A piece of tool steel held against an emery wheel will give off
A. white sparks with stars on the ends
B. yellow sparks
C. no sparks
D. green sparks

24. Grinding wheels have a range of soft to hard abrasive materials depending on the use. Most manufacturers letter their wheels from A to Z. Which of the following mark represents the hardest?
A. E
В. Z
C. А
D. E1

25. What is the main difference between a planer and a shaper?
A. the planer has an offset table and the shaper has a horizontal table
B. the shaper has a rotting table and the planer has a horizöntal table
C. the table of a planer has a reciprocating motion past the tool head while the table of the shaper is stationary and the tool head has a reciprocating motion
D. one is larger than the other

26. One of the factors involved in the choice of a grinding wheel is —-
A. the kind of material to be ground
B. the amount of stock to be removed
C. the kind of finish required
D. all of the these

27. The "tang" of a file is the part that
A. does the cutting
B. has no teeth
C. fits into the handle
D. is opposite the handle

28. In general, files are divided into two classes called
A. single-cut and double-cut
B. rough and smooth
C. fine and coarse
D. heel and sizes

29. The length of a file is measured from
A. end to end
B. point to end
C. point to heel
D. heel to end

30. Which of the following where "pillar" files are used?
A. filling slots
B. filing against a shoulder
C. filing keyways
D. any of the above

31. Which of the following will usually happen to the blade of flexible hacksaw applied by too much pressure?
A. snap easily
B. buckle or run out of line
C. cut too fast
D. cut on a slant

32. Which of the following best defines soldering?
A. It is holding two metals together by heating.
B. It is joining two metals by a third soft metal that is applied in a molten state
C. It is holding two different kinds of metals together by heating
D. It is joining two metals together by heating

33. What is the use of flux in soldering?
A. keep the solder from running off the metal
B. keep the metal from getting too hot
C. keep the tip of the soldering iron clean
D. remove and prevent oxidation of the metals

34. A surface should be prepared for soldering by.
A. filing the surfaces
B. acid-cleaning the surfaces
C. scraping the surfaces
D. any of these

35. What is (are) the hand tools) used for cutting threads on round stock?


A. stock and die

B. stock

C. die wrench

D. stock cutter

36. Which of the following best defines sweating?
A. soldering two different kinds of metal together
B. separating two pieces of metal that have been. soldered together
C. tinning two surfaces, applying, flux between them, holding the two together and heating
D. none of the above

37. If muriatic acid is used as a flux, the soldered area must be cleaned thoroughly afterwards to prevent
A. anyone touching it from getting burned
B. remaining acid from eating the metal
C. the acid from evaporating and the solder disintegrating
D. none of these

38. Solder will not unite with a metal surface that has
A. grease on it
B. oxidation on it
C. dirt on it
D. any of these

39. Prepared soldered paste fix is most popular but if you did not have any, you could use —-

A. hydrochloric acid

B. nitric acid

C. sulfuric acid

D. any of the above

40. Hard solder is made of which of the following?
A. copper and zinc
B. tin and copper
C. tin and zinc
D. tin and lead

41. Which of the following is the flux usually used for hard for solder?

A. rosin
B. Barium
C. borax
D. alum

42. In which of the following where straight muriatic acid is often used as a flux?

A. galvanized iron

B. sheet steel

C. cast iron

D. any of the above

43. For aluminum, special solders are being used and will usually require which of the following?
A. more heat
B. the same heat as copper wire
C. less heat
D. the same heat as sheet metal

44. Soft solder is made of which of the following?
A. copper and zinc
B. tin and copper
C. tin and lead
D. tin and zinc

45. A piece of mild steel held against an emery wheel will give off —
A. bright shiny sparks
B. no sparks
C. light straw-colored sparks
D. green sparks

46. Tool steel can be hardened by which of the following?
A. heating red hot and plunging into water
B. heating red hot and cooling in a blast of dry air
C. heating red hot and plunging into linseed or cottonseed oil
D. any of the above, depending on type and use

47. What material where a scriber is made from?

A. carbon steel

B. tool steel

C. cold - rolled steel

D. hot - rolled steel

48.
What should be done first before applying layout blue on a piece of metal?
A. roughened
B. clean
C. hot
D. cold

49. How many flutes does a drill bit have?
A. 4 flutes
B. 2 flutes
C. 3 flutes
D. no flutes

50. Where is the correct position of the tool bit when facing off a piece of material in the lathe chuck?
A. above center
B. below center
C. at the center
D. off center

51. Standard vise has —- jaws
A. soft
B. hard
C. semihard
D. semisoft

52. In machining, which of the following could be the reason if tool bit burns?

A. speed is too slow

B. material is too hard

C. speed is too fast

D. material cannot be cut

53. Which of the following describes a flexible back hacksaw blade?
A. only the teeth hardened
B. a movable back
C. flexible ends
D. only the back hardened

54. The flexible type hacksaw blade is best suited for which of the following materials?
A. channel iron
B. aluminum
C. tubing
D. any of the above.

55. A scriber is made from what materials?
A. carbon steel
B. tool steel
C. cold-rolled steel
D. hot-rolled steel

56. Before applying layout blue on a piece of metal, it must be ——

A. roughened
B. cleaned
C. heated
D. cold

57. A drill bit has how many flutes?
A. 4 flutes
B. 2 flutes
C. 3 flutes
D. no flutes

58. The alignment of coupling faces can be checked by which process?
A. using an inside micrometer
B. inserting a thermocouple
C. inserting a feeler gage between the coupling faces at various points around the circumference
D. rotating and measuring to nearest permanent fitting

59. A piece of cast iron held against an emery wheel will give off what?
A. dull yellow sparks
B. red sparks
C. bright shiny sparks
D. no sparks

60. When cutting material in a lathe, the softer the material being cut, the tool bit should have —-

A. more top rake

B. double top rake

C. less top rake

D. any of the above

61. After grinding a tool bit, the cutting edge should be.
A. case-hardened
B. stoned with an oilstone
C. rubbed with emery cloth
D. rubbed with crocus cloth

62. When turning a piece of round metal in a lathe, the front clearance should be smaller for
A. large-diameter cutting
B. cutting angles
C. small-diameter cutting
D. none of the above

63.
When cutting material in a lathe, the harder the material being cut, the tool bit should have ——

A. more side rake
B. more top rake
C. less side rake
D. no side rake

64. What is the primary purpose of knurling?
A. smooth material
B. roughen material
C. polish material
D. sharpen material

65. What do you call the process of removing the sharp edges from a piece of stock?
A. knurling
B. planning
C. chamfering
D. turning

66. Abrasion of parts against wheels or belts coated with polishing compounds.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling

67. At what speed that carbon steel drill should be operated?
A. speed greater than that when using a high-speed drill
B. speed less than that when using a high-speed drill
C. the same speed as that when using a high-speed drill
D. none of these

68. A super fine grinding operation used to expose nonfragmented, crystalline base metal.

A. sheradizing

B. super finishing

C. polishing

D. pickling

69. A process in which metal is dipped in dilute acid solutions to remove dirt grease and oxides.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling

70. A hot - dip or electroplate application of tin to steel.
A. tin - plating
B. metal spraying
C. organic finishes
D. lapping

71. A fine grinding operation used to obtain exact fit and dimensional accuracy.
A. tin - plating
B. metal spraying
C. organic finishes
D. lapping

72. The covering of surfaces with an organic film of paint, enamel or lacquer.
A. tin - plating
B. metal spraying
C. organic finishes
D. lapping

73. The spraying of molten metal onto a product. Methods include metallizing, metal powder spraying and plasma flame spraying.
A. tin - plating
B. metal spraying
C. organic finishes
D. lapping

74. A grinding operation using stones moving in a reciprocating pattern. Leaves a characteristic cross - hatch pattern.
A. Parkerizing
B. Honing
C. Hard surfacing
D. Galvanizing

75. The creation ( by spraying, plating, fusion welding, or heat treatment) of a hard metal surface in a softer product.
Answer:

A. Parkerizing

B. Honing

C. Hard surfacing

D. Galvanizing

76. A zinc coating applied to low carbon steel to improve corrosion resistance. The coating can be applied in a
not dip bath, by electroplating or by dry tumbling (sheradizing)

A. Parkerizing
B. Honing
c. Hard surfacing
D. Galvanizing

77. The electro - deposition of a coating onto the workpiece. Electrical current is used to drive ions in solution to the part. The workpiece is the cathode in the electrical circuit.
A. Electroplating
B. Calorizing
C. Burnishing
D. Buffing

78. The diffusing of aluminum into a steel surface, producing an aluminum oxide that protects the steel from high - temperature corrosion.
A. Electroplating
B. Calorizing
C. Burnishing
D. Buffing

79. A fine finishing operation, similar to polishing, using a very fine polishing compound.

A. Electroplating

B. Calorizing

C. Burnishing

D. Buffing

80. Rotating parts in a barrel filled with an abrasive or non - abrasive medium. Widely used to remove burrs, flash, scale, and oxides.
A. Abrasive cleaning
B. Calorizing
C. Barrel finishing
D. Anodizing

81. An electroplating - acid bath oxidation process for aluminum and magnesium. The workpiece is the anode in the electrical circuit.
A. Abrasive cleaning
B. Tumbling
C. Barrel finishing
D. Anodizing

82. Shooting sand (i.e. sand blasting ), steel grit, or steel. shot against workpieces to remove casting sand, scale, and oxidation.
A. Abrasive cleaning
B. Tumbling
C. Barrel finishing
D. Anodizing

83. What is the other term of barrel finishing?.
A. Abrasive cleaning
B. Tumbling
C. Barrel finishing
D. Anodizing

84. Brittle materials produce discrete fragments, known as —-
A. chip breaker grooves
B. discontinuous chips
C. non - segmented chips
D. type - two chips

85. Ductile materials form long, helix - coiled string chips known as
A. continuous chips.
B. discontinuous chips
C. segmented chips
D. type - one chips

86. Often ground in the cutting tool face to cause long chips to break into shorter, more manageable pieces.
A. chip breaker grooves
B. discontinuous chips
C. non - segmented chips
D. type - two chips

87. What is the typical chip thickness ratio ?
A. 0.50
В. 0.75
C. 0.25
D. 1.00

88. The angle at which the tool meets the workpiece is characterized by:

A. true rake angle

B. clearance angle

C. relief angle

D: wedge angle

89. Which of the following is the sum of the rake, clearance, and wedge angles?
A. 90 deg.
B. 180 deg.
C. 45 deg.
D. 75 deg.

90. What is the relative velocity difference between the tool and the workpiece?
A. cutting speed
B. chip velocity
C. shear velocity
D. rake velocity

91. How do you call the velocity of the chip relative to the tool face?


A. cutting speed

B. chip velocity

C. shear velocity

D. rake velocity

92. How do you call the velocity of the chip relative to the work piece?
A. cutting speed
B. chip velocity
C. shear velocity
D. rake velocity

93. Which of the following is the primary parameter affecting the cutting energy requirement ?
A. compressive stress
B. shear stress
C. torsional stress
D. bending stress

94. The energy expended per unit volume removed is known as
A. specific cutting energy
B. metal removal rate
C. cutting horsepower
D. absolute cutting energy

95. Which of the following are used in specific case, usually in finishing operations with ultra precision accuracy?
A. Sintered carbides
B. Ceramic tools
C. Diamonds
D. Cast nonferrous

96. Which of the following is a "must" for all hard hacksaw blades?
A. It has a hard back and flexible teeth
B. It has a flexible back and hard teeth
C. It has the entire blade hardened
D. It will only fit a solid frame hacksaw

97. In how many positions can a hacksaw blade be placed in a frame?
A. two positions
B. one position
C. four positions
D. three positions

98. What is/are the primary reason(s) why lead is used in solder?
Answer:

A. it has a high melting.

B. it is cheap

C. it has a low melting
D. it is cheap and it has a low melting

99. Hacksaw blades are made of what materials?

A. tool steel
B. tungsten alloy steel
C. high - speed steel
D. any of these

100. A hacksaw blade with 24 TPI is best suitable for cutting which of the following materials?
A. tubing
B. brass and copper
C. sheet metal over 18 gage
D. any of these