Question Statement:
Which one of the following makes an ideal air-standard Stirling cycle?
Options:
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(A) Two reversible isobars, and two reversible adiabatics
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(B) Two reversible isotherms, and two reversible isobars
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(C) Two reversible isotherms, and two reversible isochores
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(D) Isentropic compression, constant volume heat addition, isentropic expansion, and
constant volume heat rejection
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2026 Q.14)**
**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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