MATSE 259 - EXAM 1 2025 QUESTIONS
AND ANSWERS
What are atoms made up of? - ANS Electrons, protons, and neutrons
Property of a material that would help in an electrical application - ANS Electrical
conductivity
In compression test, the strain that develops in the loading axis is (positive/negative/neutral) -
ANS negative
How to calculate axial stress "S" - ANS S=E*e
What is engineering stress? - ANS Engineering Stress=Force/instantaneous area
What is true stress? - ANS True stress=S(1+e)
What is engineering strain? - ANS engineering strain=dL/L
What is True Strain? - ANS true strain=ln(1+e)
1
What point on the stress strain curve does necking start to occur? - ANS Ultimate tensile
Page
strength (UTS)
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, What are Luder's Bands? - ANS The generation of approximate constant stress at yield point
for some strain length due to pinning and unpinning effects. Thisresults in non-uniform
deformation.
If a material is subjected to two incremental true strains namely e1 and e2, then the total true
strain is: - ANS e1+e2
Which one of the following is a secondary bond?
Ionic
Permanent Dipole Bond
Covalent Bond
Metallic Bond - ANS Permanent Dipole Bond
A mechanical property that measures the degree of plastic deformation - ANS Ductility
How do metallic bonds form? - ANS The non-valence electrons and the nucleus form ion
cores and have positive charge.
What is elastic recovery? - ANS After a load is removed from a specimen, the specimen
begins to return to it's original position.
Which bonds are directional? - ANS Covalent
What are the properties of Ionic Bonds? - ANS High Bond NRG
High Melting temperature
2
Hard
Page
@COPYRIGHT @THEBRIGHT 2025/2026
AND ANSWERS
What are atoms made up of? - ANS Electrons, protons, and neutrons
Property of a material that would help in an electrical application - ANS Electrical
conductivity
In compression test, the strain that develops in the loading axis is (positive/negative/neutral) -
ANS negative
How to calculate axial stress "S" - ANS S=E*e
What is engineering stress? - ANS Engineering Stress=Force/instantaneous area
What is true stress? - ANS True stress=S(1+e)
What is engineering strain? - ANS engineering strain=dL/L
What is True Strain? - ANS true strain=ln(1+e)
1
What point on the stress strain curve does necking start to occur? - ANS Ultimate tensile
Page
strength (UTS)
@COPYRIGHT @THEBRIGHT 2025/2026
, What are Luder's Bands? - ANS The generation of approximate constant stress at yield point
for some strain length due to pinning and unpinning effects. Thisresults in non-uniform
deformation.
If a material is subjected to two incremental true strains namely e1 and e2, then the total true
strain is: - ANS e1+e2
Which one of the following is a secondary bond?
Ionic
Permanent Dipole Bond
Covalent Bond
Metallic Bond - ANS Permanent Dipole Bond
A mechanical property that measures the degree of plastic deformation - ANS Ductility
How do metallic bonds form? - ANS The non-valence electrons and the nucleus form ion
cores and have positive charge.
What is elastic recovery? - ANS After a load is removed from a specimen, the specimen
begins to return to it's original position.
Which bonds are directional? - ANS Covalent
What are the properties of Ionic Bonds? - ANS High Bond NRG
High Melting temperature
2
Hard
Page
@COPYRIGHT @THEBRIGHT 2025/2026
