Question Bank • QB_FM_118 NAT • 2 Marks

Section 2: Farm Machinery

Farm Machinery

Subtopic: Calculation of performance parameters – field capacity, efficiency, performance index, application rate and losses

Question Statement:

A tractor sprayer with a boom having 12 nozzles spaced $50\text{ cm}$ apart moves at $6.0\text{ km/h}$. Each nozzle delivers $0.75\text{ L/min}$. Calculate the spray application rate in $\text{L/ha}$.

Answer Key:

150

Step-by-Step Solution & Explanation

Application rate formula: $Q = \frac{600 \times q}{w \times S}$ Where: - $q = 0.75\text{ L/min}$ - $w = 0.50\text{ m}$ - $S = 6.0\text{ km/h}$ $Q = \frac{600 \times 0.75}{0.50 \times 6.0} = \frac{450}{3.0} = 150.0\text{ L/ha}$
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