Air at 50 kPa pressure and 400 K temperature flows in a duct at Mach 3.0. A part of the flow
leaks through an opening on the duct wall into the ambient, where the pressure is 30 kPa.
The maximum Mach number achieved in the discharge is _______ (accurate to two decimal
places). (Ratio of specific heats of air is 𝛾 = 1.4).
8/9
Official Answer Key:
0.0
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2018 Q.45)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Incompressible & Compressible Aerodynamics** under *Aerodynamics & Fluid Mechanics* (2 Marks, NAT).
**2. Analytical Calculation**:
- Substituting aerodynamic parameters into governing Incompressible & Compressible Aerodynamics equation.
**3. Final Answer**:
Acceptable official numerical value is **0.0**.
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