Question Bank • QB_SUB_FP_SRC_002 NAT • 2 Marks

Section 3: Farm Power

Sources of Power

Subtopic: Sources of power on the farm – human, animal, mechanical, electrical, wind, solar and biomass

Question Statement:

A pair of bullocks exerts a steady forward draft force of $600\text{ N}$ while pulling a moldboard plow at a speed of $3.6\text{ km/h}$. The draft power developed by the bullock pair (in kW) is:

Answer Key:

0.6

Step-by-Step Solution & Explanation

Velocity: $v = 3.6\text{ km/h} = \frac{3.6}{3.6} = 1.0\text{ m/s}$ Power: $P = F \times v = 600 \times 1.0 = 600\text{ W} = 0.60\text{ kW}$
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