GATE AE 2026 • Q42 MCQ • 2 Marks

Aerospace Structures

Structural Mechanics

Subtopic: Thin-Walled Shells & Buckling

Question Statement:

The figure below shows a compressor stage with station numbers 1, 2, and 3 as indicated. If p0i, T0i, and Ci refer to the average values of total pressure, total temperature, and absolute flow speed, respectively, at the ith station, select the CORRECT option considering losses.

Options:

  • (A) p01 < p02, p02 > p03 ; T01 < T02, T02 ≈ T03 ; C1 < C2, C2 > C3
  • (B) p01 < p02, p02 = p03 ; T01 < T02, T02 ≈ T03 ; C1 < C2, C2 = C3
  • (C) p01 < p02, p02 > p03 ; T01 < T02, T02 < T03 ; C1 > C2, C2 > C3
  • (D) p01 < p02, p02 < p03 ; T01 < T02, T02 < T03 ; C1 = C2 = C3

Official Answer Key:

A

Step-by-Step Solution & Explanation

### **Official Solution & Step-by-Step Derivation (GATE AE 2026 Q.42)** **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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