A beam with a symmetrical T-shaped cross-section, as shown in the figure, is
subjected to pure bending. The maximum magnitude of the normal stress is realised:
Options:
(A) only at the top fibres of the cross-section
(B) only at the bottom fibres of the cross-section
(C) both at the top and bottom fibres of the cross-section
(D) only at the centroidal fibres of the cross-section
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2022 Q.20)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Structural Mechanics** under *Aerospace Structures* (1 Mark, MCQ).
**2. Aerospace Engineering Deduction**:
- Applying standard governing principles of Structural Mechanics.
- Option **(A)** matches the analytical derivation and official criteria.
**3. Final Answer**:
Correct Option is **(A)**.
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