Allied & ICAR Exam Bank • ALLIED_0216 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 combine harvester threshing drum of diameter $60\text{ cm}$ ($0.6\text{ m}$) turns at $950\text{ rpm}$. The peripheral speed of the drum in m/s is (rounded off to one decimal place):

Answer Key:

29.8

Step-by-Step Solution & Explanation

$v = \pi D N / 60 = (\pi \times 0.6 \times 950) / 60 = 1790.7 / 60 \approx 29.85\text{ m/s}$.
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