1) All of the following material properties are assumed for the course except a) They obey Hooke's Law b) Material is Homogeneous c) Materials do not experience more than one stress d) Material is Isotropic 2) The formula F/A can be used to calculate what? a) Shear stress b) Transverse shear stress c) Average normal stress d) Normal stress due to bending e) Torsion 3) All of the following are units of stress except a) m^2/N b) psi c) ksi d) Pascal e) N/m^2 4) Using scissors to cut hair induces what? a) torque b) normal stress c) torsion d) shear stress e) no stress is caused 5) Cables in bridges break under what? a) torque b) normal stress c) torsion d) shear stress e) stress does not cause colapse 6) Stress is a function of what? a) cross sectional area b) surface area c) area of the whole object d) cross sectional volume e) volume of the entire object 7) Increasing the area of stress will what? a) increase stress b) decrease stress c) not change the stres 8) Stress is Synonymous with what? a) Power b) Strain c) Force d) Pressure e) Torque 9) According to Hooke's law spring displacement is proportional to what? a) Force and original spring length b) Pressure and Original Spring L c) Force and spring Cross-sectional area d) Force and final spring length 10) In the Elastic Range a) Material obeys Hooke's Law b) Material snaps back to length after unloading c) Young's modulus can be used to calculate stress & strain d) Stress and Strain is linear e) All of the above 11) Is it safe to Operate a material at its yield strength? a) Sure why not, it'll hold b) Nah maybe not a good Idea 12) The young's modulus is the same for all materials? a) False b) True 13) Plastic deformation in ductile materials results in what? a) Strain Hardening b) Increased tensile and yield strength c) Increased hardness d) reduced ductility e) all of the above 14) Plastic deformations cause the young's modulus to change a) True b) False 15) The highest point of stress in a material is what? a) The Ultimate tensile strength b) material Facture point c) Material Yield

CE 121 Review

από
Εκτύπωση
Ενσωμάτωση

Κατάταξη

Οπτικό στυλ

Επιλογές

Αλλαγή προτύπου

Επαναφορά αυτόματα αποθηκευμένου: ;