GATE AE 2018 • Q3 MCQ • 1 Mark

General Aptitude

Verbal & Numerical Aptitude

Subtopic: Analytical Reasoning

Question Statement:

Consider a vector field given by xî + yĵ + zk̂. This vector field is

Options:

  • (A) divergence-free and curl-free.
  • (B) curl-free but not divergence-free.
  • (C) divergence-free but not curl-free.
  • (D) neither divergence-free nor curl-free.

Official Answer Key:

A

Step-by-Step Solution & Explanation

### **Official Solution & Step-by-Step Derivation (GATE AE 2018 Q.3)** **1. Governing Concept & Syllabus Domain**: This question pertains to **Verbal & Numerical Aptitude** under *General Aptitude* (1 Mark, MCQ). **2. Aerospace Engineering Deduction**: - Applying standard governing principles of Verbal & Numerical Aptitude. - Option **(A)** matches the analytical derivation and official criteria. **3. Final Answer**: Correct Option is **(A)**.

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