GATE AG 2012 • Q15 MCQ • 1 Mark

Section 2: Farm Machinery

Machine Design

Subtopic: Measurement of force, stress, torque, speed, displacement and acceleration on machine elements – shafts, couplings, keys, bearings and knuckle joints

Question Statement:

During field operation, the shank of a tractor-drawn rigid-tyne sweep-type cultivator is mainly subjected to:

Options:

  • (A) bending
  • (B) shear
  • (C) torsion
  • (D) bending and torsion

Official Answer Key:

A

Step-by-Step Solution & Explanation

The draft (horizontal soil-reaction) force acts near the tip of the shank while it is rigidly clamped at the toolbar, producing a bending moment along its length; this bending action dominates the stress state of a rigid sweep-type shank. Answer: A (per official key).

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