Allied & ICAR Exam Bank • ALLIED_2849 MCQ • 1 Mark

Section 2: Farm Machinery

Farm Machinery

Subtopic: Forces acting on a tillage tool

Question Statement:

In McKyes and Ali soil cutting model, the passive earth pressure wedge formed ahead of a wide tamping blade assumes failure occurring along a:

Options:

  • (A) Planar failure surface inclined at an angle $\beta$ to the horizontal
  • (B) Log-spiral curve strictly at the surface
  • (C) Vertical slip plane
  • (D) Circular arc tangent to the sky

Answer Key:

A

Step-by-Step Solution & Explanation

Universal Earthmoving Equation simplifies wedge theory assuming a straight planar failure boundary extending from blade tip to free soil surface.
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