Structural Analysis – Multiple Choice Questions (MCQs)

1. 49. What is 'equilibrium equations' in the stiffness method?

   • A. Equations that relate the external loads to the internal forces and reactions based on equilibrium conditions
   • B. Equations of compatibility
   • C. Equations for material properties
   • D. Equations for design

2. 50. What is 'structural idealization'?

   • A. Simplifying the actual structure into a simplified model for analysis
   • B. Making the structure more complex
   • C. Ignoring all details
   • D. Building a physical model

3. 51. What is 'linear elastic analysis'?

   • A. Analysis based on the assumption that material behaves linearly and elastically
   • B. Analysis for non-linear materials
   • C. Analysis for plastic deformation
   • D. Analysis for brittle fracture

4. 52. What is 'non-linear analysis'?

   • A. Analysis that considers non-linear material behavior
   • B. large deformations
   • C. or non-linear boundary conditions
   • D. Analysis for linear elastic materials

5. 53. What is 'stability analysis'?

   • A. The study of the behavior of a structure under load
   • B. considering its tendency to buckle or lose its stable equilibrium
   • C. The study of material strength
   • D. The study of deflection

6. 54. What is 'buckling'?

   • A. The sudden
   • B. large deformation of a slender compression member at a critical load
   • C. The stretching of a member
   • D. The shortening of a member

7. 55. What is 'Euler buckling load'?

   • A. The theoretical critical axial load that a slender column can withstand before buckling
   • B. assuming ideal conditions
   • C. The actual buckling load
   • D. The load at which the column breaks

8. 56. What is the 'slenderness ratio' of a column?

   • A. The ratio of its effective length to its least radius of gyration
   • B. The ratio of its length to its width
   • C. The ratio of its cross-sectional area to its length
   • D. The ratio of its material strength to its load

9. 57. What is 'column analogy method'?

   • A. A method used to analyze indeterminate structures by relating the flexibility of a beam to the properties of an analogous column
   • B. A method for trusses
   • C. A method for frames
   • D. A method for plates

10. 58. What is 'plastic analysis'?

    • A. Analysis that considers the behavior of a structure beyond the elastic limit
    • B. allowing for plastic deformation and the formation of plastic hinges
    • C. Analysis based on linear elastic behavior
    • D. Analysis for brittle materials

11. 59. What is a 'plastic hinge'?

    • A. A region in a structural member where full plastic moment is reached
    • B. and rotation can occur at constant moment
    • C. A region where the material breaks
    • D. A region where no moment exists

12. 60. What is the 'mechanism method' (or upper bound theorem) in plastic analysis?

    • A. A method that states that the collapse load computed by assuming a plastic collapse mechanism will always be greater than or equal to the true collapse load
    • B. A method for elastic analysis
    • C. A method for serviceability limit state
    • D. A method for fatigue analysis