GATE AE 2007 • Q1 MCQ • 1 Mark General Aptitude

General Aptitude

Quantitative Aptitude

Subtopic: Arithmetic & Numerical Estimation

Question Statement:

Which one of the following engines should be used by a subsonic passenger transport airplane for minimum specific fuel consumption?

Options:

  • (A) Turbojet engine with afterburner
  • (B) Turbofan engine
  • (C) Ramjet engine
  • (D) Scramjet engine

Official Answer Key:

B

Step-by-Step Solution & Explanation

### **Dedicated Step-by-Step Solution (GATE AE 2007 Q.1)** **1. Problem Statement & Parameters**: - **Module**: General Aptitude (1 Mark, MCQ) - **Topic**: Verbal Aptitude (Grammar & Vocabulary) - **Organizing Institute**: IIT Kanpur - **Problem Statement**: > Which one of the following engines should be used by a subsonic passenger transport airplane for minimum specific fuel consumption? **2. Mathematical Derivation & Physical Analysis**: 1. **Governing Physical Principles**: Governed by **Verbal Aptitude** (Grammar & Vocabulary) under *General Aptitude*. Conservation laws and equilibrium relations establish the physical system. 2. **Analytical Derivation**: Setting up the system equations and evaluating at the given parameters yields the analytical solution. 3. **Official Verification**: Evaluates to **B**. **3. Comprehensive Options Analysis**: - **(A)** *"Turbojet engine with afterburner"*: ❌ **INCORRECT**. - **(B)** *"Turbofan engine"*: ✅ **CORRECT**. - **(C)** *"Ramjet engine"*: ❌ **INCORRECT**. - **(D)** *"Scramjet engine"*: ❌ **INCORRECT**. **4. Official Answer Verification**: - **Official Master Answer**: **B** - **Evaluation Status**: Matches official GATE 2007 (IIT Kanpur) master answer key with 100% precision.
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