Question Bank • QB_SUB_FP_TRC_001 MCQ • 1 Mark

Section 3: Farm Power

Tractors and Power Tillers

Subtopic: Traction theory

Question Statement:

In Bekker's soil sinkage equation $p = \left(\frac{k_c}{b} + k_\phi\right) z^n$, the parameter $b$ represents:

Options:

  • (A) The smaller dimension (width) of the rectangular contact plate
  • (B) The longitudinal wheel base of the vehicle
  • (C) The total weight of the tractor
  • (D) The moisture content of the soil

Answer Key:

A

Step-by-Step Solution & Explanation

Bekker's pressure-sinkage formulation uses $b$ as the narrower contact dimension (plate width or tire contact width) to scale cohesive modulus $k_c$.
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