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Imse 250 Exam 3 Graded A+ 2024
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Imse 250 Exam 3 Graded A+ 2024
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Imse 250 Exam 3 Graded A+ 2024"A photopolymerization process used to produce parts from photopolymer materials in a
liquid state
using one or more lasers to selectively cure to a predetermined thickness and harden
the material into
shape layer upon layer." This sentence is describing which additive manufacturing
processes?
(A) Stereolithography. (B) Selective laser sintering.
(C) Fused deposition modeling (D) Contour Crafting - ANSWER-a
A mudbrick is one of composite materials. It belongs to which of type of composite?
A) fiber composite B) particle composite
C)laminar composite D) none of above - ANSWER-A
According to Richard Smalley (1996 Noble Laureate in Chemistry), what is the
humanity's top one problem
during next 50 year?
(A) Energy. (B) Water.
(C) Food. (D) Terrorism & War.
(E) Population. - ANSWER-A
According to the definition of additive manufacturing given by ASTM, why CNC turning
is not considered as an AM process?
A) not fabricating a 3d part directly from CAD model
B) not in a layer by layer additive fashion - ANSWER-B
According to the definition of composite material, is a clear glass panel (assuming pure
SiO2)considered composite material? Why?
YES OR NO? REASON? - ANSWER-yes ; not a combination of 2 or more different
materials
Additive manufacturing (am) is known by many names; which one of the following is not
known as an AM process ?
A) rapid prototyping
b ) 3d printing
C) photolithography - ANSWER-C
Additive manufacturing technologies can shorten the time to market significantly.
According to mckinsey associates, if a product is late to market by 6 months, already
——- of its gross profit margins are lost.
A) 1/3 b) 1/2 c) 2/3 - ANSWER-C
As projected in the video "Energy outlook 2035", which energy form will be the fastest
growing fossil fuel
, worldwide?
(A) Petroleum. (B) Coal. (C) Natural gas. - ANSWER-c
As projected in the video "Energy outlook 2035", will the U.S. achieve energy self-
sufficiency by then?
(A) Yes. (B) No. - ANSWER-a
Between laptop computer and toaster, which one uses about 1000 times more energy
than the other?
(A) Laptop computer. (B) Toaster. - ANSWER-b
Composite material is a(n) ___________ solid consisting of two or more different
materials bonded
together.
(A) uniform (B) non-uniform - ANSWER-b
Due to the lay by lay deposition fashion in FDM, which axis of the finish part do you
think is the weakest
axis under load?
(A) Horizontal X. (B) Horizontal Y.
(c) Vertical Z. - ANSWER-c
How long does it take for bmw to produce an aluminum fixture using cnc machining ?
A) 1.5 days b) 10 days c) 18 days - ANSWER-C
In the video " 3d printing human parts " the intricate high porosity scaffold structure is
achieved through a technology called ——.
A) chemical vapor deposition
B) melt electrospinning - ANSWER-B
In the video "using a 3d printer to make human body parts " how did dr atala generate
the body part computer model to be printed ? - ANSWER-Xray and 3d scanning
In which type of semiconductor material there is a shortage of electrons, i.e. there are
"holes" in
the crystal lattice?
(A) N-type.
(B) P-type - ANSWER-b
name two positive potential impacts 3d bioprinting can bring to the drug development
industry? - ANSWER-1)provide complex tissues as testbed similar to human body
2) reduce animals
Please judge: "Certain amount of material will be removed from the workpiece in
machining."
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