MAE 272 Midterm 1
1. 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: a) all answers except dimensions and tolerances
2. 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: e) same for AISI 1008 of equivalent hardness
3. 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: D) can cause dog-ears and non-uniform
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,MAE 272 Midterm 1
wall thickness in deep drawing
4. 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: a) roll steels and non-ferrous alloys
5. 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: c) thermal conductivity must be determined to identify the temper
6. 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
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12
1. 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: a) all answers except dimensions and tolerances
2. 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: e) same for AISI 1008 of equivalent hardness
3. 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: D) can cause dog-ears and non-uniform
1/
12
,MAE 272 Midterm 1
wall thickness in deep drawing
4. 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: a) roll steels and non-ferrous alloys
5. 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: c) thermal conductivity must be determined to identify the temper
6. 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
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12
