Question Bank • QB_FM_116 MCQ • 1 Mark

Section 2: Farm Machinery

Farm Machinery

Subtopic: Soil tillage

Question Statement:

In disc harrows, the curved steel dished plates that cut and pulverize the soil are mounted on a common central shaft known as the:

Options:

  • (A) Spool
  • (B) Gang bolt (arbor bolt)
  • (C) Bumper plate
  • (D) Standard

Answer Key:

B

Step-by-Step Solution & Explanation

A gang bolt (gang axle or arbor bolt) is the central square or round high-tensile steel shaft upon which a set of harrow discs and spacer spools are clamped together to rotate as a rigid unit.
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