What is a reference sheet for the elements that can be used to form engineering materials?
APeriodic table
BTruth table
CBuilding blocks of Materials
DStructure of Materials
#22
What physical property of a material that refers to the point at which a material liquefies on heating or solidifies on cooling?
AMelting point
BCurie point
CRefractive index
DSpecific heat
#23
What physical property of a material that refers to the temperature at which ferromagnetic materials can no longer be magnetized by outside forces?
AMelting point
BThermal conductivity
CThermal expansion
DCurie point
#24
What physical property of a material refers to the amount of weight gain (%) experienced in a polymer after immersion in water for a specified length of time under a controlled environment?
ADielectric strength
BElectric resistivity
CWater absorption
DThermal conductivity
#25
What physical property of a material that refers to the rate of heat flow per unit time in a homogenous material under steady-state conditions, per unit area, per unit temperature gradient in a direction perpendicular to area?
AThermal expansion
BThermal conductivity
CHeat distortion temperature
DWater absorption
#26
What physical property of a material refers to the highest potential difference (voltage) that an insulating material of given thickness can withstand for a specified time without occurrence of electrical breakdown through its bulk?
AThermal expansion
BConductivity
CDielectric strength
DElectrical resistivity
#27
What physical property of a material refers to the temperature at which a polymer under a specified load shows a specified amount of deflection?
ACurie temperature
BSpecific heat
CHeat distortion temperature
DThermal conductivity
#28
What mechanical property of a material refers to the nominal stress at fracture in a tension test at constant load and constant temperature?
ACreep strength
BStress rapture strength
CCompressive yield strength
DHardness
#29
What mechanical property of a material refers to the resistance to plastic deformation?
ARigidity
BPlasticity
CDuctility
DHardness
#30
What parameter is defined as the temperature at which the toughness of the material drops below some predetermined value, usually 15ft-lb?
ANil ductility temperature
BCurie temperature
CThermal conductivity
DHeat distortion temperature
#31
What is obtained by repeatedly loading a specimen at given stress levels util it fails?
AElastic limit
BEndurance limit or fatigue strength of material
CCreep
DAll of the choices
#32
What dimensional property of a material refers to the deviation from edge straightness?
ALay
BOut of flat
CCamber
DWaviness
#33
What dimensional property of a material refers to a wavelike variation from a perfect surface, generally much wider in spacing and higher in amplitude than surface roughness?
ALay
BWaviness
CSurface finish
DOut of flat
#34
Wood is composed of chains of cellulose molecules bonded together by another natural polymer called ________
Aplastic
Blignin
Cmer
Dadditive
#35
What is a polymer production process that involves forming a polymer chain containing two different monomers?
ACopolymerization
BBlending
CAlloying
DCross-linking
#36
What is the generic name of a class of polymer which is commercially known as "nylon"
APolyacetals
BPolyamide
CCellulose
DPolyester
#37
By definition, a rubber is a substance that has at least _______ elongation in tensile test and is capable of returning rapidly and forcibly to its original dimensions when load is removed
A100%
B150%
C200%
D250%
#38
What is the method of forming polymer sheets or films into 3 dimensional shapes, in which the sheet is clamped on the edge, heated until it softens and sags, drawn in contact with the mold by vacuum, and cooled while still in contact with the mold?
ACalendering
BBlow molding
CThermoforming
DSolid phase forming
#39
What is a process of forming continous shapes by forcing a molten polymer through a metal die?
ACalendering
BThermoforming
CLithugraphy
DExtrusion
#40
What chemical property of a material which refers to its ability to resist deterioration by chemical or electrochemical reactions with environment?