Allied & ICAR Exam Bank • ALLIED_0314 MCQ • 1 Mark

Section 3: Farm Power

Farm Power

Subtopic: Traction theory

Question Statement:

Tractive efficiency of an agricultural tractor is defined as the ratio of:

Options:

  • (A) Drawbar power developed to axle power delivered to the drive wheels
  • (B) Engine brake power to indicated power
  • (C) Fuel energy to drawbar power
  • (D) Slip speed to forward speed

Answer Key:

A

Step-by-Step Solution & Explanation

$\eta_t = P_{db} / P_{axle} = (P \cdot v) / (T \cdot \omega)$, accounting for rolling resistance and wheel slip losses.
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