Allied & ICAR Exam Bank • ALLIED_1810 MCQ • 2 Marks

Section 8: General Aptitude

Analytical & Spatial Aptitude

Subtopic: Spatial Reasoning & 3D Representations

Question Statement:

A driver gear with 20 teeth drives a follower gear with 60 teeth. If the driver rotates at 1200 RPM, what is the rotational speed of the follower?

Options:

  • (A) 400 RPM
  • (B) 3600 RPM
  • (C) 600 RPM
  • (D) 200 RPM

Answer Key:

A

Step-by-Step Solution & Explanation

Speed ratio is inversely proportional to tooth count: N_driver * T_driver = N_follower * T_follower. N_follower = 1200 * (20 / 60) = 400 RPM.
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