Allied & ICAR Exam Bank • ALLIED_1105 NAT • 2 Marks

Section 3: Farm Power

Farm Power

Subtopic: Traction Mechanics

Question Statement:

A tractor drive tire with dynamic rolling radius $r = 0.65\text{ m}$ rotates at $N = 30\text{ rpm}$. The actual forward speed of the tractor measured over a test track is $v = 1.75\text{ m/s}$. The percentage wheel slip is:

Answer Key:

14.3

Step-by-Step Solution & Explanation

Theoretical linear velocity $v_t = r \omega = 0.65 \times \left(\frac{2\pi \times 30}{60}\right) = 0.65\pi \approx 2.042\text{ m/s}$. Slip $S = \frac{v_t - v}{v_t} \times 100 = \frac{2.042 - 1.75}{2.042} \times 100 = \frac{0.292}{2.042} \times 100 \approx 14.30\%$.
← Previous (ALLIED_1104) Next (ALLIED_1106) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test