Question Statement:
For a given chamber pressure, the thrust of a rocket engine is highest when
Options:
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(A) the rocket is operating at its design altitude.
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(B) the rocket is operating in vacuum.
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(C) the rocket is operating at sea-level.
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(D) there is a normal shock in the rocket nozzle.
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2016 Q.20)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Air-Breathing & Rocket Propulsion** under *Propulsion* (1 Mark, MCQ).
**2. Aerospace Engineering Deduction**:
- Applying standard governing principles of Air-Breathing & Rocket Propulsion.
- Option **(A)** matches the analytical derivation and official criteria.
**3. Final Answer**:
Correct Option is **(A)**.
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