MSE 250 EXAM 4 | QUESTIONS AND ANSWERS | 2026
UPDATE | WITH COMPLETE SOLUTIONS.
100% Correct 320
Incorrect 0
1 of 320
Term
Semiconductors can be __ or __ semiconductors.
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a. linear; 1D a. intrinsic; extrinsic
a.water bottles d. plexiglass picture frames
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2 of 320
Term
Bakelite billiard balls are made of __ thermoset polymer.
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d. plastic ropes b. van der waals
c. heavily crosslinked b. plastic bottles
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3 of 320
Term
Elastomeric polymers are __ and __ cross-linked.
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c. water bottles c. structure; thermal; mechanical
d. stretchy; lightly c. stiffer than
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4 of 320
Term
Based on electrical conductivity, materials can be classified as __, __, and
__.
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b. plasticizer; thermal; mechanical c. Teflon coatings for cookware
b. conductors; insulator;
d. synthetic; coating; adhesive
semiconductors
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5 of 320
Term
The mobility of a charge carrier is its __ per unit __.
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b. ductility; impact toughness. b. pellets; beads; granulates
a. solution-treat; single-phase c. velocity; electric field
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6 of 320
Term
The microstructure of the Wright Flyer crankcase shows __ resulting
from __ after __.
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b. thermal; mechanical d. glassy; leathery; rubbery; viscous
b. age-hardening; heating;
casting b. quench; room-temperature
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7 of 320
Term
The __ of an elastomer affects its __ properties.
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a.degree of cross-linking;
mechanical b. molecular weight; chemical
d. polymer chain length; electrical c. type of monomer; thermal
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UPDATE | WITH COMPLETE SOLUTIONS.
100% Correct 320
Incorrect 0
1 of 320
Term
Semiconductors can be __ or __ semiconductors.
Give this one a try later!
a. linear; 1D a. intrinsic; extrinsic
a.water bottles d. plexiglass picture frames
Don't know?
2 of 320
Term
Bakelite billiard balls are made of __ thermoset polymer.
,Give this one a try later!
d. plastic ropes b. van der waals
c. heavily crosslinked b. plastic bottles
Don't know?
3 of 320
Term
Elastomeric polymers are __ and __ cross-linked.
Give this one a try later!
c. water bottles c. structure; thermal; mechanical
d. stretchy; lightly c. stiffer than
Don't know?
4 of 320
Term
Based on electrical conductivity, materials can be classified as __, __, and
__.
,Give this one a try later!
b. plasticizer; thermal; mechanical c. Teflon coatings for cookware
b. conductors; insulator;
d. synthetic; coating; adhesive
semiconductors
Don't know?
5 of 320
Term
The mobility of a charge carrier is its __ per unit __.
Give this one a try later!
b. ductility; impact toughness. b. pellets; beads; granulates
a. solution-treat; single-phase c. velocity; electric field
Don't know?
6 of 320
Term
The microstructure of the Wright Flyer crankcase shows __ resulting
from __ after __.
, Give this one a try later!
b. thermal; mechanical d. glassy; leathery; rubbery; viscous
b. age-hardening; heating;
casting b. quench; room-temperature
Don't know?
7 of 320
Term
The __ of an elastomer affects its __ properties.
Give this one a try later!
a.degree of cross-linking;
mechanical b. molecular weight; chemical
d. polymer chain length; electrical c. type of monomer; thermal
Don't know?
