1. 1. _____ A machine tool in which metal is removed by means of a revolving cutter with many teeth, each tooth having a
cutting edge which removes its share of the stock.]
2. _____ A metal turning machine tool in which the work, while revolving on a horizontal axis, is acted upon by a cutting
tool which is made to move slowly (feed) in a direction more or less parallel to the axis of the work (longitudinal feed)
3. _____ A machine tool used in the production of flat surfaces on pieces too large or too heavy or, perhaps too
awkward to hold in a shaper.
4. _____ A tool used in measuring diameters
5. _____ It consists of shaping a piece by bringing it into contact with a rotating abrasive wheel.
6. _____ Used to true and align machine tools, fixtures, and works; to test and inspect size trueness of finished work;
and to compare measurements, either heights or depths or many other measurements.
7. _____ The shop term used to include the marking or inscribing of center points, circles, arcs, or straight lines upon
metal surfaces, either curved or flat, for the guidance of the worker.
8. _____ An operation of sizing and finishing a hole by means of cutting tool having several cutting edges.
9. _____ The operation of making a cone-shaped enlargement of the end of a hole, as for a recess for a flathead screw.
10. _____ The operation of enlarging a hole by means of an adjustable cutting tool with only one cutting edge.
11. _____ An imaginary circle passing through the points at which the teeth of the meshing gears contact each other.
12. _____ A type of bolt intended for use in bolting wooded parts together, or wood to metal. It has short portion of
shank just underneath a round head, which is designed to keep the bolt from turning in the wood when the nut is
tightened.
13. _____ The number of teeth per inch of pitch diameter and gives some indications of the size of the gear teeth.
14. _____ The distance from the center to center of one tooth of a gear to the center of the next consecutive tooth
measured on the pitch.
15. _____ The portion of a gear tooth that projects above or outside the pitch circle.
16. _____ The portion of the gear tooth space that is cut below the pitch circle and is equal to the addendum plus the
clearance.
17. _____ When meshed with a gear, it is used to change rotary motion to reciprocating motion.
18. _____ A kind of gear used to transmit motion from one shaft to another shaft at an angle to the first.
19. _____ A kind of gears used for heavy-duty works where a large ratio of speed is required and are extensively used in
speed reducers.
20. _____ The uniform heating of steel above the usual hardening temperatures, followed by cooling freely in air.
21. _____ The operation of cooling a heated piece of work rapidly by dipping it in water, brine or oil.
22. _____ A method used in softening a piece of metal that is too hard to machine and is done by heating steel slowly
above the usual hardening temperature, keeping it at the heat for ½ to 2 hours, then cooling slowly preferably in a
furnace.
23. _____ The total permissible variation in the size of a dimension; the difference between the limits of size
24. _____ The operation of machining the end of a work piece to make the end square with the axis.
25. _____ The clearance between the tooth profiles of gear tooth.
26. _____ The operation of rotating a work piece an exact amount
27. _____ A mechanism which usually do the indexing in a machine tool
28. _____ A x than itself.
29. _____ A cylindrical bar of steel with threads formed around it and grooves or flutes running lengthwise in it,
intersecting with the threads to form cutting edges. It is used to cut internal threads.
30. _____ A set of gages consisting of thin strips of metal of various thickness mounted in a steel case or holder and is
widely used for measuring and checking clearances.
31. _____ A machine tool which is very similar to a shaper except that the ram reciprocates vertically rather than
horizontally.
32. _____ A machine tool used principally to machine flat or plane surfaces with a single-point cutting tool.
33. _____ A kind of bolt which has no head and instead has threads on both ends.
34. _____ A kind of chuck which has reversible jaws which could be adjusted separately.
35. _____ A tool which, when pressed into a finished hole in a piece of work, provides centers on which the piece may be
turned or otherwise machined.
36. _____ A kind of chuck which should not be used where extreme accuracy is required.
37. _____ The process of checking or producing checkers on the surface of a piece by rolling checkered depressions into
the surface
38. _____ It fits into the main spindle of a lathe and is so called because it acts as a bearing surface on which the work
rests. It revolves with the work. When compared with the hardness of the dead center in the tailstock, it is usually
“soft” and is so made since it does no work.
39. _____ A gripping device with two or more adjustable jaws set radially.
40. _____ In a lathe, it comprises the main spindle, the necessary mechanism for obtaining the various spindle speed,
and also certain gears which are used to operate the quick-change gear mechanism.
41. _____ The process of heating a piece of steel to a temperature within or above critical range and cooling rapidly.
42. _____ Welding operation in which a non-ferrous filler metal melts at a temperature below that of the metal joined but
is heated above 450oC.
43. _____ Uniting of two pieces of metal by means of a different metal which is applied between the two in molten state.
44. _____ Fusion process in which the metal is heated to a state of fusion permitting it to flow together into a solid joint.
45. _____ Joining metal by means of high current at low voltage. During the passage of current, pressure by the
electrodes produces a forge weld.
46. _____ A device for accurately measuring diameters.
47. _____ A hand-tool used to measure tension on bolts

2. 48. _____ A hand-tool used to measure engine crank web deflections.
49. _____ A gear with teeth on the outer cylindrical surface
50. _____ The diameter of a circle coinciding with the top of the teeth of an internal gear
51. _____ A circle coinciding with a tangent to the bottom of the tooth space.
52. _____ The total depth of a tooth space, equal to addendum plus dedendum.
53. _____ The material used in high speed processes
54. _____ An alloy made of zinc and copper
55. _____ An alloy of tin and phosphorous and copper
56. _____ The process of working metal by using force or by hammering
57. _____ A heavy rotating body for absorbing and redistributing kinetic energy.
58. _____ The common deoxidizer and cleanser of steel, forming oxides and sulfates, that are carried off in the slag.
59. _____ A highly transparent and exceedingly hard crystalline stone of almost pure carbon.
60. _____ A fine grained, slaty silica rock used for sharpening edged tools.
61. _____ An amorphous solid made by fusing silica with a basic oxide.
62. _____ A soft yellow metal, known since ancient times as a precious metal which all material values are based.
63. _____ The maximum stress to which a material may be subjected before failure occurs.
64. _____ The maximum stress induced in a material when subjected to alternating or repeated loading without causing
failure.
65. _____ Fluid film desired between two surfaces having relative sliding motion.
66. _____ Flexible material used to seal pressurized fluids, normally under dynamic conditions.
67. _____ Device used to prevent leakage of media
68. _____ A total deformation measured in the direction of the line of stress.
69. _____ A total resistance that a material offers to an applied load.
70. _____ A property of material which relates the lateral strain to the longitudinal strain.
71. _____ Any material that retard the flow of electricity, used to prevent passage or escape of electric current from
conductors.
72. _____ A metallic element and only metal that is liquid at ordinary temperature
73. _____ Materials, usually ceramics, employed where resistance to very high temperature is required, as for furnace
linings and metal pots.
74. _____ A tool with hardened points used for scribing circles or laying of distances.
75. _____ Name of mechanism which a welding operator holds during gas welding and at the end of which the gases are
burned to perform the various gas welding operations.
76. _____ The ability of metal to withstand forces thus following a number of twist.
77. _____ An alloying element used principally to produce stainless steel.
78. _____ A coating material used to produce galvanized iron
79. _____ Ratio of pitch diameter for the number of teeth
80. _____ The method of cold working by compression
81. _____ Subjecting a substance to a high temperature below the fusion point, usually to make it friable.
82. _____ A special metal formed when two or more metals are melted together.
83. _____ Hardening the surface of iron-based alloys by heating them below the melting point in contact with
carbonaceous substance.
84. _____ The ratio of the stress acting on an elastic substance to the decrease in volume per unit volume.
85. _____ The follower reciprocates or oscillates in a plane parallel to the axis of rotation