Question Statement:
Which one of the following flight instruments is used on an aircraft to determine its attitude in
flight?
Options:
-
(A) Vertical speed indicator
-
(B) Altimeter
-
(C) Artificial Horizon
-
(D) Turn-bank indicator
Step-by-Step Solution & Explanation
### **Dedicated Step-by-Step Solution (GATE AE 2013 Q.6)**
**1. Problem Statement & Parameters**:
- **Module**: General Aptitude (2 Mark, MCQ)
- **Topic**: Verbal Aptitude (Reading Comprehension)
- **Organizing Institute**: IIT Bombay
- **Problem Statement**:
> Which one of the following flight instruments is used on an aircraft to determine its attitude in flight?
**2. Mathematical Derivation & Physical Analysis**:
1. **Governing Physical Principles**:
Governed by **Verbal Aptitude** (Reading Comprehension) 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 **C**.
**3. Comprehensive Options Analysis**:
- **(A)** *"Vertical speed indicator"*: ❌ **INCORRECT**.
- **(B)** *"Altimeter"*: ❌ **INCORRECT**.
- **(C)** *"Artificial Horizon"*: ✅ **CORRECT**.
- **(D)** *"Turn-bank indicator"*: ❌ **INCORRECT**.
**4. Official Answer Verification**:
- **Official Master Answer**: **C**
- **Evaluation Status**: Matches official GATE 2013 (IIT Bombay) master answer key with 100% precision.
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