Allied & ICAR Exam Bank • ALLIED_1575 MCQ • 1 Mark

Section 8: General Aptitude

Analytical & Spatial Aptitude

Subtopic: Logic Deduction & Pattern Recognition

Question Statement:

Given the true proposition: 'If a turbine is vibrating excessively, then its bearings are worn.' Which of the following MUST be logically true?

Options:

  • (A) If the bearings are not worn, the turbine is not vibrating excessively.
  • (B) If the turbine is not vibrating, the bearings are not worn.
  • (C) If the bearings are worn, the turbine must vibrate.
  • (D) Worn bearings always cause fire.

Answer Key:

A

Step-by-Step Solution & Explanation

The contrapositive $\neg Q \implies \neg P$ is logically equivalent to the original conditional.
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