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IMSE 250 - Exam 2 (1)
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IMSE 250 - Exam 2 (1)
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IMSE 250 - Exam 2Calcium - ANS-Which one of the following is NOT an element commonly found in plastics
5 PP - ANS-If you box some leftover dinner for lunch at school and want to reheat in a
microwave, a plastic container with which recycling code is best to use?
ABS - ANS-What type of plastic is Legos made out of?
PLA - ANS-Which type of plastic is not derived from petroleum?
Thermosets - ANS-Which plastic materials are stronger and more rigid than others?
Thermoplastics - ANS-Which plastic materials are easier to recycle and use?
some thermoplastics and some thermosets - ANS-Plastic casting processes can be used to
produce parts from?
True - ANS-Plastic cups are made from thermoplastics
pellets - ANS-To make those plastic ware, at the very beginning, the resin is usually in the form
of?
UV-Lamps - ANS-How does the production line dry the ink printed on cups?
Milling - ANS-Which one of the following is not considered as a single-point machining process?
3-D - ANS-Most cutting processes are?
False - ANS-Drilling operation can only be conducted on a drill press.
Power consumption increases - ANS-When the cutting fluid is applied into cutting zone, many
things will happen. Which will NOT happen?
The rake angle is always positive - ANS-Which one of the following is not one of the
assumptions of this cutting model?
The picture, in the middle is a steel turning side view; please tell which side is generated closely
along the rake face on the cutting tool? (rough on top, smooth on bottom) - ANS-Lower
rake - ANS-Generally speaking, the larger the ____ angle, the sharper the cutting tool.
, 1decreases - ANS-1A shear angle(Φ) increases, the chip thickness ______
high - ANS-The shear angle is of fundamental importance. For any give uncut chip thickness, a
small shear angle means a ____ cutting force.
1increase - ANS-1When the depth of cut increases, the cutting force will typcially _____
Productivity - ANS-What is the main driving force to the development of new cutting too
materials?
2increase - ANS-Generally speaking, a decrease in cutting speed will ____ the tool life.
Turning, Facing, and Drilling - ANS-A turning machine (lathe) is a very versatile tool, what are
three operations that can be done on a lathe?
Yes - ANS-Does a larger diameter have a higher cutting speed?
Rotating Working, Linear Tool Feed, and Tool Tip Radius - ANS-A surface profile with grooves is
generated by a lathe. Can you explain why there are equally spaced groves?
Higher Speed, Lower Feedrate, larger radius - ANS-A surface profile with grooves is generated
by a lathe. How would you recommend some adjustments to improve the surface finish?
Edge, Flank, Crater, Chipping - ANS-Name some different cutting tool wear and failure modes.
larger - ANS-In a turning operation, if the tool tip is set higher than the rotation axis of the
workpiece, the effective rake angle will be _____ than that when the tool tip is set at the same
height as the rotation axis of workpiece.
smaller - ANS-In a turning operation, if the tool tip is set higher than the rotation axis of the
workpiece, the effective clearance angle will be _____ than that when the tool tip is set at the
same height as the rotation axis of workpiece.
the screw action of the helical flutes - ANS-In drilling with a conventional drill, what action is
helping remove the cutting chips from the machined hole?
lower - ANS-In a drilling operation with a standard twist drill, the cutting speed is different along
the cutting lips and the chisel edge. Usually, the speed at the drill center is _____ than that at
the outer diameter of the drill.
Centering, Countersinking, Drilling, Boring, Reaming - ANS-What are the typical processes to
machining an accurate hole.
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