For a given air-standard power, the propulsive efficiency of a turbofan engine is
more than that of a turbojet engine. Which of the following is/are the reason(s) for
this?
Options:
(A) The mass flow rate is more for a turbofan engine
(B) The exit velocity is lower for a turbofan engine
(C) A turbofan engine operates at a lower altitude
(D) The fan of a turbofan engine consumes lesser power
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2026 Q.24)**
**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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