Exam (elaborations)
IMSE 250 Exam 1 (1).
IMSE 250 Exam 1 (1).
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IMSE 250 Exam 1Make_up quizes _______ be given - ANS-Will NOT
Online homework assignments are due______. - ANS-Friday 11:59pm
If you miss an exam will there be a makeup exam? - ANS-YES
Will all manufacturing be moved out of the US? - ANS-NO
The United States accounts for about ____ of global manufacturing in 2013. - ANS-18%
When should you wear eye protection? - ANS-Every moment on the job in a machine shop
Do you need to wear eye protection when you are just visiting a machine shop? - ANS-Yes
Are both steels and cast iron iron-carbon alloys? - ANS-Yes
Aluminum is _______ to be recycled and reused. - ANS-easy
Atoms in most metals have a _______ structure. - ANS-Crystalline
Generally speaking, which structure has a better ductility (ability to deform without fracture)? -
ANS-Face-centered cubic
Generally speaking, metals have _______ thermal conductivity than plastics. - ANS-higher
On Boeing 787 airplanes, which type of material is used the most? - ANS-Composites
What materials are used to mint the 25 cent coin? - ANS-copper and nickle
Density is part of __________ - ANS-physical properties
If we let the young's modulus of AISI 4140 steel be 1, which value will most likely be the young's
modulus of plastics? - ANS-0.1
Can the young's modulus of a material be greatly changed by manufacturing process? -
ANS-No
Can the yield strength of a material be greatly changed by manufacturing process? - ANS-Yes
, If we let the tensile strength of AISI 4140 steel be 1, what value will most likely be the tensile
strength of ceramics? - ANS-0.5
Can the ductility of a material be greatly changed by manufacturing process? - ANS-Yes
Generally speaking, as tensile strength increases, hardness ________. - ANS-Increases
In the Iron-Carbon Equilibrium Diagram, which one of the following phases exists at a high
temperature environment? - ANS-Austenite
Which one of the following represents the most common heat treatment processes? -
ANS-Hardening
Generally speaking, steels are Fe-C alloys with less than about ____ carbon content. - ANS-2%
What order represents the hardness order (from hardest to softest) of the structures? -
ANS-Martensite, bainite, pearlite
Which of the following quenching media quenches the fastest? - ANS-Water
List two products that usually need surface hardening? - ANS-bearing and a gear
Which heat treatment process will give the maximum ductility to a machined metal part? -
ANS-Full annealing
Generally speaking, when heat treatment of steel parts, the faster the cooling rate, the _______
the parts will be after the heat treatment. - ANS-harder
Which one of the following heat treatment methods CANNOT improve the treated metal's
machinability? - ANS-Quenching
In tempering, the work piece needs to be heated to below _________. - ANS-lower
transformation temperature
In annealing, the work piece needs to be heated to ___________. - ANS-upper transformation
temperature
In normalizing, the work piece needs to be heated to above _____________. - ANS-upper
transformation temperature
Typically, the hardness of the steel _________ when tempering temperature increases. -
ANS-increases
Normalizing gives ____________ steel than full annealing. - ANS-stronger and more brittle
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