SE 312 EXAM QUESTIONS AND
ANSWERS GRADED A+ 2026
Elastic Modulus
Can only be found for materials with linear relationships - ANS False
Elastic Modulus
Can be approximated for some materials using the 0.2% yield strength method - ANS False;
secant modulus is used
Elastic Modulus
Relates Stress to strain by Hooke's law - ANS True (for linear materials)
Tension Yielding
Is a type of failure - ANS True
Tension Yielding
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, Is found using the secant modulus - ANS False (not related)
Tension Yielding
Is the lower yield point fro materials with an upper and lower yield point - ANS True (upper is
unstable)
What is the difference between Engineering Stress vs True Stress - ANS Engineering Stress- is
computed using the initial cross section area
True Stress- is computed using the instantaneous cross sectional area
Tension Elastic Region
No Permanent deformation - ANS True
Tension Elastic Region
Always obeys Hooke's Law - ANS False (PMMA, Cast Iron)
Tension Elastic Region
Materials that fail catastrophically are known to be brittle - ANS True
Tension Elastic Region
Uniform stress state - ANS True
Tension Plastic Region
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ANSWERS GRADED A+ 2026
Elastic Modulus
Can only be found for materials with linear relationships - ANS False
Elastic Modulus
Can be approximated for some materials using the 0.2% yield strength method - ANS False;
secant modulus is used
Elastic Modulus
Relates Stress to strain by Hooke's law - ANS True (for linear materials)
Tension Yielding
Is a type of failure - ANS True
Tension Yielding
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 1
, Is found using the secant modulus - ANS False (not related)
Tension Yielding
Is the lower yield point fro materials with an upper and lower yield point - ANS True (upper is
unstable)
What is the difference between Engineering Stress vs True Stress - ANS Engineering Stress- is
computed using the initial cross section area
True Stress- is computed using the instantaneous cross sectional area
Tension Elastic Region
No Permanent deformation - ANS True
Tension Elastic Region
Always obeys Hooke's Law - ANS False (PMMA, Cast Iron)
Tension Elastic Region
Materials that fail catastrophically are known to be brittle - ANS True
Tension Elastic Region
Uniform stress state - ANS True
Tension Plastic Region
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 2
