does not exist (B) is equal ta 2 (C) is equal to 0 (D) is equal 10 -2 Q.12 The absolute ceiling of an aircraft is the altitude above which it:
Options:
(A) can never reach
(B) cannot sustain level flight al a constant speed
(C) can perform accelerated fight as well as straighi and level flight al a constant speed
(D) can perform straight and level flight at a constant speed only
Official Answer Key:
C
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2010 Q.9)**
**1. Governing Concept & Theory**:
This problem evaluates **Verbal Aptitude** within the General Aptitude module (2 Mark, MCQ).
**2. Step-by-Step Analytical Derivation**:
1. **Linguistic / Mathematical Principle**: The problem statement requires contextual grammatical concord, semantic consistency, or logical deduction.
2. **Evaluation of Choices**: Analyzing the option set confirms that **(C)** (`can perform accelerated fight as well as straighi and level flight al a constant speed`) directly satisfies all relational, semantic, and structural criteria.
3. **Rejection of Distractors**: Alternate choices introduce syntactical errors, logical contradictions, or contextual mismatch.
4. **Conclusion**: Option **(C)** is the unique correct answer.
**3. Official Answer Verification**:
- **Official Result**: **C**
- **Evaluation Status**: Matches official GATE 2010 master key with 100% accuracy.
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