1. (True / False) Stress components are opposite in direction on the two surfaces of an imaginary cut. 2. (True / False) Stress components have opposite signs on the two surfaces of an imaginary cut. 3. (True / False) A stress element can be drawn to any scale.
1. (True / False) Stress components are opposite in direction on the two surfaces of an imaginary cut.
2. (True / False) Stress components have opposite signs on the two surfaces of an imaginary cut.
3. (True / False) A stress element can be drawn to any scale.
4. (True / False) If the left end of a rod moves more than the right end in the negative x direction, then the normal
strain in the x direction will be negative.
5. (True / False) When angle decreases from right angle we obtain positive shear strain.
6. (True / False) In Lagrangian strain the original undeformed geometry is used as the reference geometry.
7. (True / False) In isotropic materials the stress and strain relationship is same in all directions.
8. (True / False) Ductile materials show large elastic deformation but small plastic deformation before fracture.
9. (True / False) The most general anisotropic material has 21material constants that relate stress and strain
linearly.
10. (True / False) You can measure stress directly with an instrument the way you measure temperature with a
thermometer.
11. (True / False) In plane stress, the stress at a point has 4 components.
12. (True / False) In plane stress, the stress at a point has 3 independent components.
13. (True / False) Stress components have opposite signs on the two surfaces of an imaginary cut.
14. (True / False) In Eulerian strain we use the original geometry as the reference geometry.
15. (True / False) Positive shear strain results in a decrease of angle from right angle.
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