Allied & ICAR Exam Bank • ALLIED_2781 MCQ • 1 Mark

Section 2: Farm Machinery

Machine Design

Subtopic: Design and selection of machine elements – gears, pulleys, chains and sprockets and belts

Question Statement:

In a pair of spur gears in mesh, the ratio of pitch circle diameter to the number of teeth is defined as:

Options:

  • (A) Module ($m$)
  • (B) Diametral pitch ($P$)
  • (C) Circular pitch ($p$)
  • (D) Addendum

Answer Key:

A

Step-by-Step Solution & Explanation

Module is standard metric gear sizing parameter defined as $m = d / T$ where $d$ is pitch circle diameter in mm and $T$ is the number of teeth.
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