MIDTERM INEN

bauxite

from which of the following ores is aluminum derived:

knee and column

the basic milling machine is which one of the following:

remove heat from the process, reduce friction at the tool-chip interface

which of the following are the two main functions of a cutting fluid in machining:

Al2Si2O5(OH)4

which of the following comes closest to expressing the chemical composition of clay:

alumina, bauxite, corundum

which of the following contains significant amounts of aluminum oxide:

carbon

which of the following elements is the most important alloying ingredient in steel?

alumina, chromium carbide

which of the following is not a common ingredient in cemented carbide cutting tools:

gray cast iron

which of the following is the most important cast iron commercially:

machining, grinding

which of the following manufacturing processes are classified as material removal processes:

grinding

which of the following manufacturing processes will likely result in the best surface finish:

aluminum oxide, boron, e glass, kelvar 49

which of the following materials are used as fibers in fiber-reinforced plastics:

cubic boron nitride

which of the following materials has the highest hardness?

cubic boron nitride

which of the following materials is closest to diamond in hardness?

copper

which of the following pure metals is the best thermal conductor:

fibers

which of the following reinforcing geometrics offers the greatest potential for strength and stiffness improvement in the resulting composite material:

elastomers

which of the three polymers is not normally considered to be a plastic:

the maximum load divided by the original area of the specimen

which one is the correct definition of ultimate tensile strength, as derived from the results of a tensile test on a metal specimen:

alumina ceramic

which one of the following materials has the highest hardness?

water

which one of the following materials has the highest specific heat:

elastic and strain hardening

which one of the following types of stress strain relationship best describes the behavior of most metals at room temperature:

thermoplastics

which one of the three types do not involve cross-linking:

chromium, nickel

which of the following alloying elements are more commonly associated with stainless steel:

anisotropic

... means properties vary depending on the direction in which they are measured

false... defined as the resistance with which a fluid flows

T or F: viscosity can be defined as the ease with which a fluid flows

a tool with multiple teeth moves linearly past a stationary work part

a broaching operation is best described by which of the following:

drilling, boring, turning

a lathe can be used to perform which of the following machining operations:

turning

a lathe is used to perform which one of the following manufacturing operations:

a work part moves linearly past a single-point tool

a planning operation is best described by which one of the following:

total permissible variation from a specified dimension

a tolerance is which one of the following:

increase in shear plane angle, decrease in power requirements

according to the merchant equation, an increase in rake angle would have which of the following results, all other factors remaining the same:

increases toughness, decreases hardness

an increase in cobalt content has which of the following effects on WC-CO cemented carbides:

forms hard carbides to resist abrasion, increases hot hardness

as an alloying ingredient is high-speed steel, tungsten serves which of the following functions:

80% by volume, 50% by weight

in the Boeing 787 dreamliner, what % of the aircraft consist of composite materials:

solidus

in the heating of most metal alloys, metaling begins at a certain temperature and concludes at a higher temperature. in these cases, which of the following temperatures marks the beginning of metaling:

cutting speed

of the following cutting conditions, which one has the greatest effect on tool wear:

thermoplastics

of the three polymers type, which one is the most important:

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

reaming is used for which of the following functions:

feed marks of the tool that produced the surface, surface cracks, deviations from the nominal surface

surface texture includes which of the following characteristics of a surface:

to / tc

the chip thickness ratio is which one of the following: (tc= chip thickness after the cut, to= chip thickness before the cut, f= feed, d= depth, w=width of cut)

styrene butadiene rubber

the leading commercial synthetic rubber is which one:

copper, zinc

traditional brass is an alloy of which of the following metallic elements:

only two dimensions play an active role in the analysis, the cutting edge is perpendicular to the direction of cutting speed, the two elements of toll geometry are rake and relief angle

which of the following are characteristics of the orthogonal cutting model:

contour turning, profile milling

which of the following are examples of generating the workpart geometry in machining, as opposed to forming the geometry:

compression, tensile, shear

which of the following are the three basic types of static stresses to which a material can be subjected: