MSE 2001 Final Exam Questions With
100% Verified Answers
the units for modulus are -
correct answer ✅pascals
the units for strain are -
correct answer ✅length/length
the units for stress are -
correct answer ✅pascals
The cable of a hoist has a cross-section of 80 mm2. The hoist is
used to lift a crate weighing 500 kg. What is the stress in the cable?
-
correct answer ✅61 MPa
stress = force/cross-sectional area
The cable of a hoist has a cross-section of 80 mm2. The hoist is
used to lift a crate weighing 500 kg. What is the stress in the cable?
For the cable in the previous question, if the free length of the
cable is 3 m, how much will it extend if it is made of steel (modulus
200 GPa)? -
correct answer ✅0.92 mm
stress = modulus*strain
,MSE 2001 Final Exam Questions With
100% Verified Answers
strain = (change in length)/(initial length)
change in length = (stress/modulus)*(initial length)
If the cable was made from a material with a lower modulus, would
the cable stretch more or less? -
correct answer ✅more
In a material with a well-defined yield point, the yield strength is
determined to be 200 MPa. The strain value at this point is 0.002.
Compute the Young's modulus. -
correct answer ✅100 GPa
E (modulus) = stress/strain
You design a rod to hold a chandelier from the ceiling, but then
your boss informs you that the chandelier will be twice as heavy.
Your initial design will now plastically deform under the weight.
Which of the following could be done to your original design to
allow it to work with the new chandelier?
A. Use the same material, but shrink the diameter of the rod.
B. Use the same material, but increase the diameter of the rod
C. Choose a material with a higher elastic modulus, but keep the
rod diameter the same.
,MSE 2001 Final Exam Questions With
100% Verified Answers
D. Choose a material with a higher yield strength but keep the rod
diameter the same.
Both B & C will work.
Both B & D will work. -
correct answer ✅both b and d will work
Which of the following is NOT a mechanical property of a material?
ductility
hardness
yield strength
dielectric constant -
correct answer ✅dielectric constant
If a material is plastically deformed it is deformed permanently. -
correct answer ✅true
Tough materials have a high yield strength and a low ductility. -
correct answer ✅false; tough materials have high ductility/larger
area under stress strain curve
, MSE 2001 Final Exam Questions With
100% Verified Answers
In the stress-strain curve for an arbitrary material shown below,
which point most closely matches the yield point for the material? -
correct answer ✅The yield point is when the stress-strain curve
goes from linear to non-linear. This occurs at point B.
If you were asked to design a new rubber band that could stretch
farther without breaking, which of these material properties would
you try to maximize?
hardness
yield strength
stiffness
ductility
density -
correct answer ✅ductility
Thermal barrier coatings on turbine blades...
A. have a low thermal conductivity in order to increase the service
temperature of the underlying metal component.
B. have a low thermal conductivity in order to decrease the service
temperature of the underlying metal component.
100% Verified Answers
the units for modulus are -
correct answer ✅pascals
the units for strain are -
correct answer ✅length/length
the units for stress are -
correct answer ✅pascals
The cable of a hoist has a cross-section of 80 mm2. The hoist is
used to lift a crate weighing 500 kg. What is the stress in the cable?
-
correct answer ✅61 MPa
stress = force/cross-sectional area
The cable of a hoist has a cross-section of 80 mm2. The hoist is
used to lift a crate weighing 500 kg. What is the stress in the cable?
For the cable in the previous question, if the free length of the
cable is 3 m, how much will it extend if it is made of steel (modulus
200 GPa)? -
correct answer ✅0.92 mm
stress = modulus*strain
,MSE 2001 Final Exam Questions With
100% Verified Answers
strain = (change in length)/(initial length)
change in length = (stress/modulus)*(initial length)
If the cable was made from a material with a lower modulus, would
the cable stretch more or less? -
correct answer ✅more
In a material with a well-defined yield point, the yield strength is
determined to be 200 MPa. The strain value at this point is 0.002.
Compute the Young's modulus. -
correct answer ✅100 GPa
E (modulus) = stress/strain
You design a rod to hold a chandelier from the ceiling, but then
your boss informs you that the chandelier will be twice as heavy.
Your initial design will now plastically deform under the weight.
Which of the following could be done to your original design to
allow it to work with the new chandelier?
A. Use the same material, but shrink the diameter of the rod.
B. Use the same material, but increase the diameter of the rod
C. Choose a material with a higher elastic modulus, but keep the
rod diameter the same.
,MSE 2001 Final Exam Questions With
100% Verified Answers
D. Choose a material with a higher yield strength but keep the rod
diameter the same.
Both B & C will work.
Both B & D will work. -
correct answer ✅both b and d will work
Which of the following is NOT a mechanical property of a material?
ductility
hardness
yield strength
dielectric constant -
correct answer ✅dielectric constant
If a material is plastically deformed it is deformed permanently. -
correct answer ✅true
Tough materials have a high yield strength and a low ductility. -
correct answer ✅false; tough materials have high ductility/larger
area under stress strain curve
, MSE 2001 Final Exam Questions With
100% Verified Answers
In the stress-strain curve for an arbitrary material shown below,
which point most closely matches the yield point for the material? -
correct answer ✅The yield point is when the stress-strain curve
goes from linear to non-linear. This occurs at point B.
If you were asked to design a new rubber band that could stretch
farther without breaking, which of these material properties would
you try to maximize?
hardness
yield strength
stiffness
ductility
density -
correct answer ✅ductility
Thermal barrier coatings on turbine blades...
A. have a low thermal conductivity in order to increase the service
temperature of the underlying metal component.
B. have a low thermal conductivity in order to decrease the service
temperature of the underlying metal component.
