CH 18 Multiple Choice Q's

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18.3 In a turning operation, the change in diameter of the workpart is equal to which one of the following: (a) 1 x depth of cut, (b) 2 x depth of cut, (c) 1 x feed, or (d) 2 x feed?

2 x depth of cut

18.18 The difference between up milling and down milling is that in down milling the direction of motion of the cutter teeth is opposite the feed direction when the teeth cut into the work: (a) true or (b) false?

False in down milling the direction of motion of the cutter teeth is same as the feed direction in up milling it is opposite

18.16 The distinguishing feature between a drilling fixture and a drill jig is that the fixture provides a means of guiding the tool during the hole-making operation: (a) true or (b) false?

False a fixture holds the work piece a jig guides the tool

18.10 Which one of the following turning machines permits very long bar stock to be used: (a) chucking machine, (b) engine lathe, (c) screw machine, (d) speed lathe, or (e) turret lathe?

screw machine

18.25 Which one of the following terms is used for cutting external threads using self-opening threading dies: (a) tapping, (b) thread chasing, (c) thread forming, or (d) thread milling?

thread chasing

18.13 When the drill bit in a drilling operation exits the opposite side of the work, the resulting hole is called which one of the following: (a) a blind hole or (b) a through hole?

through hole

18.11 Most vertical boring machines are equipped for both turning and boring and are used for large, heavy work parts with large diameters: (a) true or (b) false?

True

18.12 The twist drill is the most common type of drill bit: (a) true or (b) false?

True

18.6 Boring and reaming share the common feature that they are both used to enlarge an existing hole: (a) true or (b) false?

True

18.8 A live center is one way of holding a workpiece in the headstock of a lathe, whereas a dead center is used to hold the work in the tailstock: (a) true or (b) false?

True

18.7 Knurling is performed on a lathe, but it is not a metal cutting operation: (a) true or (b) false?

True This is not a metal cutting operation because it does not involve cutting of material. Instead, it is "a metal forming operation used to produce a regular cross-hatched pattern in the work surface".

18.23 A broaching operation is best described by which one of the following: (a) a rotating tool moves past a stationary workpart, (b) a tool with multiple teeth moves linearly past a stationary workpart, (c) a workpart is fed past a rotating cutting tool, or (d) a workpart moves linearly past a stationary single-point tool?

a tool with multiple teeth moves linearly past a stationary workpart

18.22 A planing operation is best described by which one of the following: (a) a single-point tool moves linearly past a stationary workpart, (b) a tool with multiple teeth moves linearly past a stationary workpart, (c) a workpart is fed linearly past a rotating cutting tool, or (d) a workpart moves linearly past a single-point tool?

a workpart moves linearly past a single-point tool

18.4 A lathe can be used to perform which of the following machining operations: (a) boring, (b) broaching, (c) drilling, (d) milling, (e) planing, and (f) turning?

boring, drilling, turning

18.9 Which one of the following cutting tools cannot be used on a turret lathe: (a) broach, (b) cutoff tool, (c) drill bit, (d) single-point turning tool, or (e) threading tool?

broach

18.2 Which of the following are examples of generating the workpart geometry in machining, as opposed to forming the geometry: (a) broaching, (b) contour turning, (c) drilling, (d) profile milling, and (e) thread cutting?

contour turning, profile milling

18.15 Reaming is used for which of the following functions: (a) accurately locate a hole position, (b) create a stepped hole, (c) enlarge a drilled hole, (d) improve surface finish on a hole, (e) improve tolerance on hole diameter, and (f) provide an internal thread?

enlarge a drilled hole, improve surface finish, improve tolerance on hole diameter

18.27 End milling is most similar to which one of the following: (a) face milling, (b) peripheral milling,(c) plain milling, or (d) slab milling?

face milling

18.19 A vertical milling machine is more appropriate than a horizontal milling machine for performing which of the following types of operations: (a) end milling, (b) face milling, (c) peripheral milling, (d) plain milling, (e) slab milling, and (f) surface contouring?

face milling, end milling, surface contouring EXTRA -> die-sinking

18.24 The three basic types of sawing, according to type of blade motion involved, are which of the following: (a) abrasive cutoff, (b) bandsawing, (c) circular sawing, (d) contouring, (e) friction sawing, (f) hacksawing, and (g) slotting?

hacksawing, bandsawing, circular sawing

18.14A tap is a cutting tool used to create which one of the following geometries: (a) external threads, (b) flat planar surfaces, (c) holes used in beer kegs, (d) internal threads, or (e) square holes?

internal threads

18.20 The basic milling machine is which one of the following: (a) bed type, (b) knee-and-column, (c) profiling mill, (d) ram mill, or (e) universal milling machine?

knee-and-column

18.5 A facing operation is normally performed on which one of the following machine tools: (a) drill press, (b) lathe, (c) milling machine, (d) planer, or (e) shaper?

lathe

18.26 Gear hobbing is a special form of which one of the following machining operations: (a) grinding, (b) milling, (c) planing, (d) shaping, or (e) turning?

milling EXTRA -> the cutter called the hob cuts out the gear shape.

18.21 Typical operations performed on a machining center include which of the following: (a) boring, (b) drilling, (c) milling, (d) sawing, and (e) turning?

milling, drilling (use rotating cutting tools)

18.17 Which of the following are classified as peripheral milling rather than face milling: (a) end milling, (b) plain milling, (c) pocket milling, (d) slab milling, (e) straddle milling, and (f) surface contouring?

plain milling, slab milling, straddle milling

18.1 Machined parts can be classified as rotational or nonrotational. Which of the following are examples of operations that create nonrotational geometries: (a) boring, (b) drilling, (c) milling, (d) planing, and (e) turning?

planing, milling


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