Elastic behaviour, stress strain relationship, Hookes law - Question Bank
1. The ratio of the change in diameter to the original diameter of a wire when stretched is called:
2. Which stress-strain relationship is parabolic?
3. The phenomenon where a material returns to its original shape after the removal of deforming force is called:
4. For a perfectly rigid body, which of the following is true?
5. Which of the following statements about elasticity is incorrect?
6. A spring obeys Hooke's Law. If the spring is stretched by 2 cm by a force of 10 N, what force is required to stretch it by 6 cm?
7. Which of the following is a unit of stress?
8. A material is considered ductile if it can be drawn into wires. This property is related to its ability to:
9. The area under the entire stress-strain curve up to the fracture point represents:
10. The area under the elastic portion of a stress-strain curve represents:
11. If the stress applied to a material is doubled, and it remains within the elastic limit, the strain will:
12. Which of the following is NOT a modulus of elasticity?
13. When a solid cube is subjected to uniform pressure from all sides, it experiences:
14. A steel wire is much stiffer than a rubber cord. This means steel has a:
15. Which of the following represents the dimensional formula for strain?
16. Which of the following represents the dimensional formula for stress?
17. The relationship Y = Stress / Strain holds true only:
18. If a wire of original length L elongates by ΔL under a tensile stress, the tensile strain is:
19. If a wire of length L and cross-sectional area A is stretched by a force F, the tensile stress is given by:
20. When a wire is stretched by a force, the stress experienced by the wire is:
21. The stress at which a material fractures is known as:
22. A material that breaks with little or no plastic deformation after the elastic limit is reached is called:
23. For most materials, the value of Poisson's ratio lies between:
24. Poisson's ratio (σ) is the ratio of:
25. Liquids are generally considered:
26. A negative sign is included in the definition of bulk modulus because:
27. Bulk modulus (K) is defined as:
28. The modulus of elasticity that relates volumetric stress to volumetric strain is called:
29. Shear modulus (G) is defined as:
30. The modulus of elasticity that relates shear stress to shear strain is called:
31. A material with a high Young's modulus is considered:
32. What is the SI unit of Young's modulus?
33. Young's modulus (Y) is defined as:
34. Which modulus of elasticity relates stress and strain for tensile or compressive forces?
35. Ultimate Tensile Strength (UTS) represents the maximum stress a material can withstand:
36. The point on a stress-strain curve beyond which the material undergoes permanent deformation is called the:
37. A stress-strain curve for a ductile material typically shows a region where strain increases significantly with little increase in stress. This region is known as:
38. The elastic limit is the maximum stress that a material can withstand beyond which it will:
39. Shear strain is defined as the ratio of:
40. Which type of strain is associated with shear stress?
41. Shear stress is produced when a force is applied:
42. Compressive stress is a type of normal stress that tends to:
43. Tensile stress is a type of normal stress that tends to:
44. Which type of stress is produced when a force is applied perpendicular to the surface of a body?
45. The constant of proportionality between stress and strain within the elastic limit is called:
46. Hooke's Law states that within the elastic limit, stress is directly proportional to:
47. Strain is defined as the ratio of:
48. Which of the following is a measure of the external force applied per unit area of a body?
49. What property of a material allows it to resist deformation under stress and return to its original shape after the stress is removed?