Allied & ICAR Exam Bank • ALLIED_0127 NAT • 2 Marks

Section 2: Farm Machinery

Machine Design

Subtopic: Measurement of force, stress, torque, speed, displacement and acceleration on machine elements – shafts, couplings, keys, bearings and knuckle joints

Question Statement:

A solid agricultural implement drive shaft rotates at $540\text{ rpm}$ while transmitting $20\text{ kW}$. The torque transmitted by the shaft in $\text{N}\cdot\text{m}$ is (rounded off to one decimal place):

Answer Key:

353.7

Step-by-Step Solution & Explanation

Torque $T = \frac{60 \times P}{2 \pi N} = \frac{60 \times 20000}{2 \pi \times 540} = \frac{1200000}{3392.92} \approx 353.68\text{ N}\cdot\text{m}$.
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