A convergent nozzle fed from a constant pressure, constant temperature reservoir,
is discharging air to atmosphere at 1 bar (absolute) with choked flow at the exit
(marked as Q).
Flow through the nozzle can be assumed to be isentropic.
If the exit area of the nozzle is increased while all the reservoir parameters and
ambient conditions remain the same, then at steady state
Options:
(A) the nozzle will remain choked
(B) the nozzle will be un-choked
(C) the Mach number at section P will increase
(D) the Mach number at section P will decrease
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2022 Q.44)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Air-Breathing & Rocket Propulsion** under *Propulsion* (2 Marks, 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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