Engineering materials
Use of a parison is associated with which one of the following plastic shaping processes:
blow molding
In casting, a flask is which one of the following:
box which holds the cope and drag
Which one of the following cutting tools cannot be used on a turret lathe:
broach
During solidification of an alloy when a mixture of solid and liquid metals is present, the solid-liquid mixture is referred to as which one of the following:
mushy zone
The starting workpiece in steel hot rolling of plate and sheet stock is which of the following (one best answer):
slab
Which of the following powder shapes would tend to have the lowest interparticle friction:
spherical
Which of the following terms describes what a cemented carbide is (one best answer):
cermet,
Which of the following processes are used to provide the thin coatings on the surface of coated carbide inserts:
chemical vapor deposition
Which of the following processes are associated with the production of plastic sheet and film:
chill-roll extrusion
The principal component of an injection molding machine is
clamping unit
Most sheet metalworking operations are performed as which one of the following:
cold working,
Which of the following are bulk deformation processes:
extrusion
Which of the following processes are not plastic forming methods used in the shaping of traditional ceramics:
extrusion
Which of the following are sections of a conventional extruder barrel for thermoplastics:
feed section
Which of the following are variations of sheet-metal-bending operations:
flanging, hemming
As an alloying ingredient in high-speed steel, tungsten serves which of the following functions:
forms hard carbides to resist abrasion
Which of the following are not advantages of die casting over sand casting:
higher melting temperature metals
In filament winding, when the continuous filament is wound around the cylindrical mandrel at a helix angle close to 90, it is called which of the following:
hoop winding
Besides helping to preserve the environment, the use of recycled glass as an ingredient of the starting material in glassmaking serves what other useful purpose:
makes the glass easier to melt
A misrun is which one of the following defects in casting:
metal solidifies before filling the cavity
A lathe can not be used to perform which of the following machining operations:
milling
For which one of the following reasons is a green mold named:
moisture is contained in the mold
Which of the following descriptions applies to a V-bending operation as compared to an edge-bending operation:
used for low production
Which of the following design features would be possible to achieve by conventional pressing and sintering:
vertical stepped holes
Which one of the following terms refers to the glassy state of a material:
vitreous
Hot working of metals refers to which one of the following temperature regions relative to the melting point of the given metal on an absolute temperature scale:
0.6Tm
Typical glass melting temperatures are in which of the following ranges:
1500 C to 1600 C
Which one of the following processes is used to produce glass tubing:
Danner process
The following statement is not true for permanent molds:
Mold that metal solidifies in must be destroyed to remove casting
Silica sand has which one of the following compositions:
SiO2
A broaching operation is best described by which one of the following:
a tool with multiple teeth moves linearly past a stationary workpart
Which of the following metal would typically be used in die casting:
aluminum
A lehr is which of the following:
an annealing furnace
Which of the following are alternative names for indirect extrusion:
backward extrusion
The following equipment is used for crushing and grinding of minerals in the preparation of traditional ceramics raw materials. Which of the pieces listed is used for grinding:
ball mill, roller mill
A molding operation that uses sheet-molding compound (SMC) is a form of which one of the following:
compression molding
Which one of the following molding processes is the most important in the production of products made of conventional rubber:
compression molding
Other names for open mold processes include which of the following :
contact molding
Filament winding involves the use of which one of the following fiber reinforcements:
continuous filaments
Which of the following casting process is permanent mold operation:
die casting
Which one of the four types of chip would be expected in a turning operation conducted at low cutting speed on a brittle work material:
discontinuous
When is the tread pattern imprinted onto the circumference of the tire:
during molding,
Springback in a sheet-metal-bending operation is the result of which one of the following:
elastic recovery of the metal
Sand casting is which of the following types:
expendable mold
Production of pipes and tubes is associated with which of the following bulk deformation processes:
extrusion
Pultrusion is most similar to which one of the following plastic shaping processes:
extrusion
Which of the following processes combines pressing and sintering of the metal powders:
hot isostatic pressing
Which one of the following processes for the new ceramic materials accomplishes shaping and sintering simultaneously:
hot pressing
In which of the following properties do plastic parts often compare favourably with metals:
impact resistance
Which of the following are the purposes of finishing operations used for parts made of the new ceramics:
improve surface finish,
An increase in cobalt content has which of the following effects on WC-Co cemented carbides:
increases toughness
A tap is a cutting tool used to create which one of the following geometries:
internal threads
Which of the following casting process is expendable mold operation:
investment casting
Which of the following qualifies as a precision-casting process:
investment casting
Turbulence during pouring of the molten metal is undesirable for which of the following reasons
it increases erosion of the mold surfaces
A facing operation is normally performed on which one of the following machine tools:
lathe
Which one of the following is the best definition of bend allowance:
length before bending of the straight sheet-metal section to be bent
Investment casting is also known by which one of the following names:
lost-wax process
Casting is a glassworking process used for
low production
A roughing operation generally involves which one of the following combinations of cutting conditions (where v = cutting speed, f = feed, and d = depth):
low v, high f and d
Which one of the following press types is usually associated with the highest production rates in sheet-metal-stamping operations:
open back inclinable
Of the following processes, which one is noted for the highest material removal rates:
plasma arc cutting
The most important rubber product is which one of the following:
pneumatic tires
The chemical name of the ingredient recovered from the latex of the rubber tree is which one of the following:
polyisoprene,
The two most common polymer foams are which of the following:
polystyrene, polyurethane
Which of the following statements is correct in the context of metallic powders:
porosity + packing factor = 1.0
Which of the following are examples of generating the workpart geometry in machining, as opposed to forming the geometry:
profile milling
Which one of the following stamping dies is the most complicated:
progressive die
Which of the following are the two main functions of a cutting fluid in machining:
reduce friction at the tool-chip interface
With which one of the following geometric forms is the drilling operation most closely associated:
round hole
In cold isostatic pressing, the mold is most typically made of which one of the following:
rubber
Which one of the following casting processes is the most widely used:
sand casting
Which one of the following turning machines permits very long bar stock to be used:
screw machine
Which of the following defects or problems is associated with injection molding :
short shots
Which one of the following processes or processing steps is not applicable in glassworking:
sintering
Which of the following are characteristics of the orthogonal cutting model:
the cutting edge is perpendicular to the direction of cutting speed,
The charge in glassworking is which one of the following:
the starting materials in melting
Which of the following processes are generally limited to thermoplastic polymers:
thermoforming
Which one of the following is the most common polymer type in fiber-reinforced polymer composites:
thermosets
Total solidification time is defined as which one of the following:
time between pouring and complete solidification
The chip thickness ratio is which one of the following (where tc = chip thickness before the cut, f = feed, d = depth, and w = width of cut):
to/tc
A lathe is used to perform which one of the following manufacturing operations:
turning
Given that Wm = weight of the molten metal displaced by a core and W= weight of the core, the buoyancy force is which one of the following:
upward force = Wm - Wc
End milling is most similar to which one of the following:
face milling
The cutting force in a sheet-metal blanking operation depends on which mechanical property of the metal:
strain rate
The term encapsulation refers to which one of the following plastics shaping processes:
casting
Shell molding is best described by which one of the following:
casting process in which the mold is a thin shell of sand bonded by a thermosetting resin
Which of the following are advantages and characteristics of hot working relative to cold working:
fracture of workpart is less likely
Which of the following manufacturing processes are classified as material removal processes:
grinding, machining
Which of the following are not normally used in the processing of thermoplastic elastomers:
vulcanization
The parting line in injection molding is which one of the following:
where the two mold halves come together
Which of the following ingredients do not contribute to the vulcanizing process:
carbon black
Most rubber products are properly classified into which of the following categories:
carbon black reinforced elastomer, fiber-reinforced composite, polymer matrix composite
Cupolas are furnaces used to melt which of the following metals:
cast iron
If a glass part with a wall thickness of 5 mm (0.20 in) takes 10 minutes to anneal, how much time would a glass part of similar geometry but with a wall thickness of 7.5 mm (0.30 in) take to anneal (choose the one closest answer):
20 minutes
If the cutting conditions in a turning operation are cutting speed = 300 ft/min, feed = 0.010 in/rev, and depth of cut = 0.100 inch, which one of the following is the material removal rate (where 1 ft.= 12 inch):
3.6 in3/min
In plaster mold casting, the mold is made of which one of the following materials:
CaSO4-H2O
Of the following rubber additives, which one would rank as the single most important:
carbon black
Which one of the following casting metals is most important commercially:
cast iron
The maximum possible draft in a rolling operation depends on which of the following parameters:
coefficient of friction between roll and work, roll diameter
