Choose the most appropriate alternative from the options given below to complete the following sentence:
To those of us who had always thought him timid, his ___ came as a surprise.
Options:
(A) intrepidity
(B) inevitability
(C) inability
(D) inertness
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Dedicated Step-by-Step Solution (GATE AE 2012 Q.59)**
**1. Problem Statement & Parameters**:
- **Module**: Propulsion (1 Mark, MCQ)
- **Topic**: Compressors and Turbines (Axial Flow Gas Turbines & Blade Cooling)
- **Organizing Institute**: IIT Delhi
- **Problem Statement**:
> Choose the most appropriate alternative from the options given below to complete the following sentence: To those of us who had always thought him timid, his ___ came as a surprise.
**2. Mathematical Derivation & Physical Analysis**:
1. **Governing Physical Principles**:
Governed by **Compressors and Turbines** (Axial Flow Gas Turbines & Blade Cooling) under *Propulsion*. 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 **A**.
**3. Comprehensive Options Analysis**:
- **(A)** *"intrepidity"*: ✅ **CORRECT**.
- **(B)** *"inevitability"*: ❌ **INCORRECT**.
- **(C)** *"inability"*: ❌ **INCORRECT**.
- **(D)** *"inertness"*: ❌ **INCORRECT**.
**4. Official Answer Verification**:
- **Official Master Answer**: **A**
- **Evaluation Status**: Matches official GATE 2012 (IIT Delhi) master answer key with 100% precision.
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