The maximum axial load which is just sufficient to keep a column in a small deflected shape is called:
Try it first: pick an option, then read the explanation.
Correct answer: D. All options are correct
Asked in SSC JE 25/01/2018 (Evening)
Detailed Explanation
At the Euler load the column is in neutral equilibrium: if pushed slightly sideways it neither returns nor bends further — it simply stays in the slightly bent shape.
Why “All options are correct” Is Correct
Textbooks call this load the crippling load, buckling load or critical load interchangeably, so all options are correct.
Why the Other Options Are Wrong
- A. crippling load: Correct name, but not the only one — (d) covers all three.
- B. buckling load: Correct name, but not the only one.
- C. critical load: Correct name, but not the only one.
Key Point
Crippling load = buckling load = critical load = π²EI/le².
Key Concepts for Students
- Neutral equilibrium defines the critical load.
- A real column with imperfections starts bending before this load.
- Euler stress = critical load / area = π²E/λ².
Practice more: this is question 10 in Columns and Struts MCQs – Part 1. Try the whole set and check every answer instantly.