Allied & ICAR Exam Bank • ALLIED_2911 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 manual cono-weeder has working width $W = 15\text{ cm} = 0.15\text{ m}$. If operator walking speed is $v = 1.5\text{ km/h} = 0.417\text{ m/s}$ with field efficiency $70\%$ (0.7), theoretical field capacity ($W \times v \times 36 / 100$) in ha/day of 8 hours is approx:

Answer Key:

0.15

Step-by-Step Solution & Explanation

Capacity/hr = $0.15 \times 1.5 / 10 = 0.0225\text{ ha/h}$. At $70\%$ efficiency over 8 hrs: $0.0225 \times 0.7 \times 8 \approx 0.126\text{ ha/day}$.
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