MAE 272 Midterm 1 UPDATED ACTUAL
Exam Questions and CORRECT Answers
An estimate for job cost as per customer's RFQ should include:
a) all answers except dims and tolerances
b) overheads and target profits
c) material, tooling, and engineering costs
d) set up and run times for each operation
e) dimensions and tolerances - CORRECT ANSWER - a) all answers except dimensions
and tolerances
Minimum bend radius for AA 6061-0 is
a) 0
b) independent of rolling direction
c) likely to cause cracks in the bend
d) independent of thickness
e) same for AISI 1008 of equivalent hardness - CORRECT ANSWER - e) same for AISI
1008 of equivalent hardness
Anisotropy in sheet metals:
a) has no effect on quality of formed sheet metal parts
b) can produce orange peel effect inside stretched or deep-drawn parts
c) can have adverse effect during recrystallization process
d) can cause dog-ears and non-uniform wall thickness in deep drawing
e) is more cost effective if subsequent ironing is applied - CORRECT ANSWER - D) can
cause dog-ears and non-uniform wall thickness in deep drawing
Centrifugal forces can be utilized to:
a) roll steels and non-ferrous alloys
, b) cast hollow and solid objects
c) injection mold of plastics
d) weld with consumable electrodes
e) none of the above - CORRECT ANSWER - a) roll steels and non-ferrous alloys
When measuring the dimensions and-or form deviations of an extremely accurate metal part:
a) moisture, wind, and airborne particles must be controlled
b) operator's body temperature and blood sugar level must be controlled
c) thermal conductivity must be determined to identify the temper
d) coolant must be used during production to keep temperature low
e) none of the above - CORRECT ANSWER - c) thermal conductivity must be determined
to identify the temper
Sand casting is:
a) none of the following
b) using non-reusable sand for permanent molds
c) appropriate for large and very high precision casting
d) making a pattern of the part without shrinkage factor
e) making a wax pattern for the core - CORRECT ANSWER - b) using non-reusable sand
for permanent molds
The letter T in AA 6061-T6511 means:
a) subsequent treatment after fabrication by thermal and/or mechanical means
b) supposed to be T6 or T651, not T6511
c) annealed or recrystallized grain structures
d) strain-hardened crystal structures
e) major alloying elements are magnesium and silicon - CORRECT ANSWER - a)
subsequent treatment after fabrication by thermal and/or mechanical means
Exam Questions and CORRECT Answers
An estimate for job cost as per customer's RFQ should include:
a) all answers except dims and tolerances
b) overheads and target profits
c) material, tooling, and engineering costs
d) set up and run times for each operation
e) dimensions and tolerances - CORRECT ANSWER - a) all answers except dimensions
and tolerances
Minimum bend radius for AA 6061-0 is
a) 0
b) independent of rolling direction
c) likely to cause cracks in the bend
d) independent of thickness
e) same for AISI 1008 of equivalent hardness - CORRECT ANSWER - e) same for AISI
1008 of equivalent hardness
Anisotropy in sheet metals:
a) has no effect on quality of formed sheet metal parts
b) can produce orange peel effect inside stretched or deep-drawn parts
c) can have adverse effect during recrystallization process
d) can cause dog-ears and non-uniform wall thickness in deep drawing
e) is more cost effective if subsequent ironing is applied - CORRECT ANSWER - D) can
cause dog-ears and non-uniform wall thickness in deep drawing
Centrifugal forces can be utilized to:
a) roll steels and non-ferrous alloys
, b) cast hollow and solid objects
c) injection mold of plastics
d) weld with consumable electrodes
e) none of the above - CORRECT ANSWER - a) roll steels and non-ferrous alloys
When measuring the dimensions and-or form deviations of an extremely accurate metal part:
a) moisture, wind, and airborne particles must be controlled
b) operator's body temperature and blood sugar level must be controlled
c) thermal conductivity must be determined to identify the temper
d) coolant must be used during production to keep temperature low
e) none of the above - CORRECT ANSWER - c) thermal conductivity must be determined
to identify the temper
Sand casting is:
a) none of the following
b) using non-reusable sand for permanent molds
c) appropriate for large and very high precision casting
d) making a pattern of the part without shrinkage factor
e) making a wax pattern for the core - CORRECT ANSWER - b) using non-reusable sand
for permanent molds
The letter T in AA 6061-T6511 means:
a) subsequent treatment after fabrication by thermal and/or mechanical means
b) supposed to be T6 or T651, not T6511
c) annealed or recrystallized grain structures
d) strain-hardened crystal structures
e) major alloying elements are magnesium and silicon - CORRECT ANSWER - a)
subsequent treatment after fabrication by thermal and/or mechanical means
