Allied & ICAR Exam Bank • ALLIED_0166 NAT • 2 Marks

Section 2: Farm Machinery

Farm Machinery

Subtopic: Functional requirements, principles of working, construction and operation of manual, animal, tractor and renewable energy operated equipment for tillage, sowing, planting, fertilizer application, inter-cultivation, spraying, mowing, chaff cutting, harvesting and threshing

Question Statement:

A 9-row seed drill with row spacing $20\text{ cm}$ has ground wheel diameter $0.7\text{ m}$. In a calibration test of 100 wheel revolutions, $1.385\text{ kg}$ of seed is collected. The seed rate in kg/ha is (rounded off to one decimal place):

Answer Key:

35

Step-by-Step Solution & Explanation

$W = 9 \times 0.20 = 1.8\text{ m}$. Wheel circ $= \pi \times 0.7 = 2.1991\text{ m}$. Distance $= 219.91\text{ m}$. Area $= 1.8 \times 219.91 = 395.84\text{ m}^2 = 0.039584\text{ ha}$. Seed rate $= 1.385 / 0.039584 = 35.0\text{ kg/ha}$.
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