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MSE 250 Final Exam Questions With Verified Answers
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©BRIGHTSTARS EXAM SOLUTIONS 2024/2025 ALL RIGHTS RESERVED. 1 MSE 250 Final Exam Questions With Verified Answers Type of bonding in metals - Answersmetallic arrangement of metals - Answerscrystalline arrangement (orderly) other characteristics of metals - Answersstrong, stiff, ductile, resis...

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  • December 17, 2024
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  • 2024/2025
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  • mse 250 final exam questions with verified answers

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©BRIGHTSTARS EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.


MSE 250 Final Exam Questions With
Verified Answers


Type of bonding in metals - Answers✔metallic

arrangement of metals - Answers✔crystalline arrangement (orderly)

other characteristics of metals - Answers✔strong, stiff, ductile, resistant to fracture
high thermal and electrical conductivity

kind of bonding in ceramics - Answers✔ionic

characteristics of ceramics - Answers✔strong stiff BUT brittle
insulating
often chemically inert (nonreactive)

kind of bonding in polymers - Answers✔covalent bonding with a carbon chain backbone

characteristics of polymers - Answers✔soft ductile low strength low density
insulating
amorphous arrangement (non-orderly)

what five things can a tensile test measure (SSDTH) - Answers✔strength stiffness ductility
toughness and hardness

TRUE stress and strain is dependent on what? - Answers✔geometry
Stress is represented by what variable and is on which axis of a stress strain curve? -
Answers✔sigma and y-axis and in MPa
strain is represented by what variable and is on which axis of a stress strain curve? -
Answers✔cursive e thing and x axis

elastic deformation is - Answers✔reversible


1

, ©BRIGHTSTARS EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.
plastic deformation is - Answers✔permanent

FCC characteristics (atoms/cell and coordination #) - Answers✔# atoms/cell=4
coordination #=12

SC (simple cubic) characteristics (atoms/cell and coordination #) - Answers✔# atoms/cell=1
coordination #=6

BCC characteristics (atoms/cell and coordination #) - Answers✔# atoms/cell=2
coordination #=8

substitutional impurity - Answers✔usual lattice sites, same size atoms and crystal structure

interstitial impurity - Answers✔sits between usual lattice sits, atoms must be smaller that host
atoms

covalent bond difference in electronegativity - Answers✔large

covalent bond does what with its electrons - Answers✔shares them

metallic bond difference in electronegativity - Answers✔small

metallic bond does what with its electrons - Answers✔shares them

ionic bond difference in electronegativity - Answers✔large

ionic bond does what with its electrons - Answers✔transfers them

polymorphism - Answers✔having more than one crystal structure

allotropy - Answers✔polymorphism in elements

what three things can you get from phase diagrams - Answers✔phases present phase composition
and amounts of each phase

twinning - Answers✔when two lattice orientations are mirror images across their dividing line

grain size reduction - Answers✔grain boundaries act as obstacles to moving dislocations (dec in
grain size leads to inc in total length of grain boundary)

solid solution strengthening - Answers✔impurities/alloying elements usually induce
compressive/tensive stress because of size differences

precipitation hardening - Answers✔enough impurity atoms concentrate together to form a second
phase particle

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