Allied & ICAR Exam Bank • ALLIED_0313 NAT • 2 Marks

Section 3: Farm Power

Farm Power

Subtopic: Traction theory

Question Statement:

A tractor tire rolling under load has dynamic rolling radius $r = 0.70\text{ m}$. Drive axle turns at $30\text{ rpm}$. Theoretical zero-slip travel speed in m/s is (rounded off to two decimal places):

Answer Key:

2.20

Step-by-Step Solution & Explanation

$v = \omega r = (2\pi \times 30 / 60) \times 0.70 = \pi \times 0.70 = 2.199\text{ m/s} \approx 2.20\text{ m/s}$.
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