Structural Analysis – Multiple Choice Questions (MCQs)

1. 61. What is the 'static method' (or lower bound theorem) in plastic analysis?

   • A. A method that states that if a stress distribution can be found that satisfies equilibrium and yield conditions
   • B. then the corresponding load will always be less than or equal to the true collapse load
   • C. A method for elastic analysis
   • D. A method for serviceability limit state

2. 62. What is 'grid floor'?

   • A. A two-way system of intersecting beams and columns
   • B. used to support heavy loads over large spans
   • C. A one-way slab
   • D. A flat plate

3. 63. What is a 'shear center'?

   • A. The point in a cross-section of a beam through which the shear force must act to produce no twisting (torsion) of the section
   • B. The centroid of the section
   • C. The neutral axis
   • D. The point of maximum stress

4. 64. What is 'torsion' in structural members?

   • A. The twisting of a member caused by an applied moment about its longitudinal axis
   • B. Bending
   • C. Shear
   • D. Axial force

5. 65. What is 'warping' in thin-walled sections subjected to torsion?

   • A. Out-of-plane deformation of the cross-section
   • B. In-plane deformation
   • C. Rotation without deformation
   • D. Axial deformation

6. 66. What is 'finite element method' (FEM)?

   • A. A numerical method for solving engineering problems by dividing a complex structure into smaller
   • B. simpler elements
   • C. A purely analytical method
   • D. A graphical method

7. 67. What is a 'node' in FEM?

   • A. A point at which elements are connected and degrees of freedom are defined
   • B. A type of element
   • C. A load application point
   • D. A support point

8. 68. What is an 'element' in FEM?

   • A. A small
   • B. discrete part of the structure
   • C. approximating the actual structure
   • D. A large

9. 69. What is 'meshing' in FEM?

   • A. The process of dividing the structure into elements and nodes
   • B. The process of applying loads
   • C. The process of defining material properties
   • D. The process of solving equations

10. 70. What is 'global stiffness matrix' in FEM?

    • A. A matrix that represents the stiffness of the entire assembled structure
    • B. A matrix for a single element
    • C. A matrix for loads
    • D. A matrix for displacements

11. 71. What is 'dynamic analysis' in structural engineering?

    • A. The study of the response of structures to time-varying loads (e.g.
    • B. earthquakes
    • C. wind gusts)
    • D. The study of static loads

12. 72. What is 'natural frequency' of a structure?

    • A. The frequency at which a structure tends to vibrate when subjected to a disturbance
    • B. The frequency of applied load
    • C. The frequency of damping
    • D. The frequency of resonance