MAE 272 Exam 3 Review Questions & Answers 2024/2025
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Course
MAE 272
Institution
MAE 272
MAE 272 Exam 3 Review Questions & Answers 2024/2025
During polymerization thermosetting plastics are going through a process: - ANSWERSCalled cross-link curling and Which is irreversible
Friction should be eliminated, or at least minimized in manufacturing processes except during: - ANSWERS...
MAE 272 Exam 3 Review Questions &
Answers 2024/2025
During polymerization thermosetting plastics are going through a process: - ANSWERSCalled cross-link
curling and Which is irreversible
Friction should be eliminated, or at least minimized in manufacturing processes except during: -
ANSWERSAll answers are correct (flat and profile rolling, roll forging, solid-state friction welding, ring
rolling)
Comparing to steels, Kevlar 29 - ANSWERSHas higher specific strength
During forming anisotropy in sheet metals can: - ANSWERScan cause variations of properties in different
directions
Recrystallization is: - ANSWERSAll answers are correct ( Decrease of the density of dislocations,
Reduction of strength and an increase in ductility of the metal, Heating a deformed part to a
temperature above the recovery. New set of strain-free grains are formed)
Knurling is usually made by: - ANSWERSrolling using standard tools, DIA must be specified as before or
after knurling
Ceramics are: - ANSWERSCompound of metallic and non-metallic elements with high thermal resistance
and low toughness
In designing a casting, whenever abrupt change in cross sectional area is not avoidable, voids and
porosity caused by shrinkage can be prevented by using: - ANSWERSChills
Thread for hex screws can be cost-effectively produced in very large quantity by: - ANSWERScold rolling
between flat or circular dies
, When you measure the dimensions or form accuracy of a metal part: - ANSWERStemperature must be
controlled
Surface hardness build-up during machining can: - ANSWERSall answers are correct ( cause thermal
expansion that affects dimensional accuracy, increase resistance to indentation, shorten tool life, and
cause un-controlled strengthening effect)
Shafts with a cam follower can be turned on: - ANSWERSnone of the above
Centrifugal forces can be utilized to: - ANSWERScast hollow and solid objects
SPC can be used to: - ANSWERSpredict the completion time of a job order
When measuring the dimensions and-or form deviations of an extremely accurate metal part: -
ANSWERSnone of the above
A riser helps: - ANSWERSnone of the above
EDM can produce large parts in approximately 60-90 pieces/min cycle time that are: - ANSWERSnot
feasible at all
What is the difference between AA 6061-T4 and AA 6061-T6: - ANSWERSboth are stress relieved by
thermal input
Connecting rods in internal combustion engines are: - ANSWERSAll answers are correct ( designed to
convert a linear motion into an angular one not required for electrical cars, Not needed in an EV
powered by hydrogen, Not required in electrical cars, and produced by casting or forging)
Rapid cooling rate during solidification will: - ANSWERSA, C and D ( Produce smaller grains, Produce high
crystal nucleation rate which produces large number of grains , and Produce a smooth surface after
stretching)
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