Question Statement:
Which of the following statement(s) is/are true about the state of stress in a plane?
Options:
-
(A) Maximum or major principal stress is algebraically the largest direct stress at a
point.
-
(B) The magnitude of minor principal stress cannot be greater than the magnitude of
major principal stress.
-
(C) The planes of maximum shear stress are inclined at 90 degrees to the principal
axes.
-
(D) The normal stresses along the planes of maximum shear stress are equal.
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2023 Q.26)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Structural Mechanics** under *Aerospace Structures* (1 Mark, MSQ).
**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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