A multi-stage axial compressor can be operated at two points, A and B, both of
which lie on the same speed line, as shown in the figure below. If 𝜂 is the
isentropic efficiency of the compressor, select the statements that is/are TRUE.
Options:
(A) 𝜂A > 𝜂B
(B) 𝜂B > 𝜂A
(C) In comparison to point B, point A is closer to the surge point
(D) In comparison to point A, point B is closer to the choke point
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2026 Q.28)**
**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)**.
Practice This in Real CBT Exam Interface
Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.