Allied & ICAR Exam Bank • ALLIED_0120 MCQ • 1 Mark

Section 2: Farm Machinery

Machine Design

Subtopic: Overload safety devices used in farm machinery

Question Statement:

A slip clutch (friction disc safety clutch) in an agricultural rotary tiller differs from a shear pin primarily because:

Options:

  • (A) It slips momentarily during peak overload and re-engages automatically without requiring replacement
  • (B) It operates without any friction material
  • (C) It is destroyed upon the first overload
  • (D) It only works at zero rpm

Answer Key:

A

Step-by-Step Solution & Explanation

A friction slip clutch uses spring-loaded friction linings that slip when torque exceeds the preset threshold and smoothly re-engages once the jam clears.
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