MAE 272-Review 3 UPDATED ACTUAL
Exam Questions and CORRECT Answers
During polymerization thermosetting plastics are going through a process: - CORRECT
ANSWER - Called cross-link curling and Which is irreversible
Friction should be eliminated, or at least minimized in manufacturing processes except during: -
CORRECT ANSWER - All answers are correct (flat and profile rolling, roll forging, solid-
state friction welding, ring rolling)
Comparing to steels, Kevlar 29 - CORRECT ANSWER - Has higher specific strength
During forming anisotropy in sheet metals can: - CORRECT ANSWER - can cause
variations of properties in different directions
Recrystallization is: - CORRECT ANSWER - All 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: - CORRECT ANSWER - rolling using standard tools, DIA
must be specified as before or after knurling
Ceramics are: - CORRECT ANSWER - Compound 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: - CORRECT ANSWER -
Chills
Thread for hex screws can be cost-effectively produced in very large quantity by: - CORRECT
ANSWER - cold rolling between flat or circular dies
, When you measure the dimensions or form accuracy of a metal part: - CORRECT
ANSWER - temperature must be controlled
Surface hardness build-up during machining can: - CORRECT ANSWER - all 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: - CORRECT ANSWER - none of the above
Centrifugal forces can be utilized to: - CORRECT ANSWER - cast hollow and solid
objects
SPC can be used to: - CORRECT ANSWER - predict the completion time of a job order
When measuring the dimensions and-or form deviations of an extremely accurate metal part: -
CORRECT ANSWER - none of the above
A riser helps: - CORRECT ANSWER - none of the above
EDM can produce large parts in approximately 60-90 pieces/min cycle time that are: -
CORRECT ANSWER - not feasible at all
What is the difference between AA 6061-T4 and AA 6061-T6: - CORRECT ANSWER -
both are stress relieved by thermal input
Connecting rods in internal combustion engines are: - CORRECT ANSWER - All 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)
Exam Questions and CORRECT Answers
During polymerization thermosetting plastics are going through a process: - CORRECT
ANSWER - Called cross-link curling and Which is irreversible
Friction should be eliminated, or at least minimized in manufacturing processes except during: -
CORRECT ANSWER - All answers are correct (flat and profile rolling, roll forging, solid-
state friction welding, ring rolling)
Comparing to steels, Kevlar 29 - CORRECT ANSWER - Has higher specific strength
During forming anisotropy in sheet metals can: - CORRECT ANSWER - can cause
variations of properties in different directions
Recrystallization is: - CORRECT ANSWER - All 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: - CORRECT ANSWER - rolling using standard tools, DIA
must be specified as before or after knurling
Ceramics are: - CORRECT ANSWER - Compound 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: - CORRECT ANSWER -
Chills
Thread for hex screws can be cost-effectively produced in very large quantity by: - CORRECT
ANSWER - cold rolling between flat or circular dies
, When you measure the dimensions or form accuracy of a metal part: - CORRECT
ANSWER - temperature must be controlled
Surface hardness build-up during machining can: - CORRECT ANSWER - all 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: - CORRECT ANSWER - none of the above
Centrifugal forces can be utilized to: - CORRECT ANSWER - cast hollow and solid
objects
SPC can be used to: - CORRECT ANSWER - predict the completion time of a job order
When measuring the dimensions and-or form deviations of an extremely accurate metal part: -
CORRECT ANSWER - none of the above
A riser helps: - CORRECT ANSWER - none of the above
EDM can produce large parts in approximately 60-90 pieces/min cycle time that are: -
CORRECT ANSWER - not feasible at all
What is the difference between AA 6061-T4 and AA 6061-T6: - CORRECT ANSWER -
both are stress relieved by thermal input
Connecting rods in internal combustion engines are: - CORRECT ANSWER - All 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)
