equilibrium of forces laws of motion friction stress strain elastic constants bending moments shear force diagrams torsion buckling of columns thin walled pressure vessels - One Line Questions

1. The slenderness ratio of a column is the ratio of its effective length to its: Radius of gyration
2. For a column with both ends pinned, the effective length is equal to its: Actual length
3. In a thin-walled pressure vessel, the maximum stress occurs in which direction? Circumferential (Hoop)
4. For a rectangular cross-section of width 'b' and depth 'd', the section modulus (Z) is: bd²/2
5. Which diagram represents the variation of shear force along the length of a beam? Shear Force Diagram
6. A material that can undergo large plastic deformation before fracture is called: Ductile
7. A beam that is supported at both ends and carries a load between the supports is called a: Simply supported beam
8. The maximum shear stress in a solid circular shaft subjected to torsion occurs at the: Surface
9. For a solid circular shaft, the maximum shear stress due to torsion is proportional to the: Radius
10. Hooke's Law states that stress is proportional to strain within the: Elastic limit
11. The critical buckling load for a column with both ends fixed is: Four times Euler's load for pinned ends
12. The maximum shear stress in a thin-walled cylindrical pressure vessel is approximately: Half of hoop stress
13. Hoop stress in a thin-walled cylindrical pressure vessel is generally: Twice the longitudinal stress
14. A body is in equilibrium if the net force acting on it is: Equal to zero
15. Which of Newton's laws of motion states that for every action, there is an equal and opposite reaction? Third Law of Motion
16. The maximum shear force for a cantilever beam with a uniformly distributed load is at the: Fixed support
17. A thin-walled pressure vessel is one where the ratio of the wall thickness to the internal diameter is typically: Less than 0.1
18. The coefficient of kinetic friction is typically: Lower than static friction
19. The coefficient of static friction is generally: Greater than the coefficient of kinetic friction
20. Bulk Modulus (K) relates pressure to: Volumetric strain
21. Poisson's ratio is defined as the ratio of lateral strain to: Longitudinal strain
22. For a thin-walled pressure vessel, the stress intensity (difference between maximum and minimum principal stresses) is equal to the: Hoop stress
23. For a ductile material, the yield strength is typically: Lower than the ultimate tensile strength
24. If a beam is subjected to pure bending, the shear force is: Zero
25. Which of the following is a unit of stress? N/m²
26. Which of the following is a unit of strain? m/m
27. In a thin-walled cylindrical pressure vessel, the hoop stress (circumferential stress) is given by: pd/2t
28. In a thin-walled cylindrical pressure vessel, the longitudinal stress (axial stress) is given by: pd/2t
29. For a thin-walled spherical pressure vessel, the stress in any direction tangential to the surface is: pd/2t
30. Young's Modulus (E) is a measure of a material's: Resistance to elastic deformation under tensile or compressive stress
31. In a bending moment diagram, the area under the shear force diagram between two sections represents the: Change in bending moment between the sections
32. Which of the following is an elastic constant? Shear modulus
33. Euler's formula for buckling load is applicable for columns that are: Long and slender
34. The ability of a material to absorb energy up to fracture is called: Toughness
35. When a body is sliding down an inclined plane, the angle of friction is related to the angle of inclination by: tan(friction angle) = tan(inclination angle)
36. Torsion is the twisting of an object due to: Torque
37. Buckling is a phenomenon associated with: Compressive members
38. Shear Modulus (G) relates stress and strain in: Shear
39. The critical buckling load for a column with one end fixed and the other end free is given by P = π²EI/(Le)² where Le is: Twice the actual length
40. For a simply supported beam with a concentrated load at the center, the bending moment is maximum at: The center
41. In the torsion formula, τ = Tr/J, what does 'J' represent? Polar moment of inertia
42. The product of Young's modulus and the polar moment of inertia is related to the: Flexural rigidity
43. The point on the stress-strain curve where the material begins to deform plastically is called the: Yield point
44. Stress is defined as force per unit: Area
45. Strain is defined as the ratio of change in length to the original: Length
46. In the context of column buckling, the term 'crippling load' is synonymous with: Critical load
47. The maximum stress that a material can withstand without permanent deformation is known as the: Elastic limit
48. A force system is in equilibrium if the algebraic sum of moments about any point is: Zero
49. The bending moment is maximum where the shear force is: Zero or changes sign
50. The polar moment of inertia for a solid circular shaft of radius 'r' is: πr⁴/4