A composite circular shaft is comprised of a steel core surrounded by an aluminum annulus,
perfectly bonded to each other as shown in the fi gure. If it subjected to a pure torque, which one of
the following statements is TRUE?
Options:
(A) Only shear stress is continuous across the steel-aluminum interface
(B) Only shear strain is continuous across the steel-aluminum interface
(C) Both shear stress and shear strain are continuous across the steel-aluminum interface
(D) Both shear stress and shear strain are discontinuous across the steel-aluminum interface
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2013 Q.39)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Structural Mechanics** under *Aerospace Structures* (2 Marks, 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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