Allied & ICAR Exam Bank • ALLIED_1071 NAT • 2 Marks

Section 2: Farm Machinery

Farm Machinery

Subtopic: Primary Tillage Implements

Question Statement:

A 2-bottom mouldboard plough operating at 4 km/h has a total width of cut of 60 cm and ploughed depth of 20 cm. If the draft measured by a dynamometer is 4.8 kN, the specific draft in N/cm$^2$ is:

Answer Key:

4.0

Step-by-Step Solution & Explanation

Cross-sectional furrow slice area $A = 60\text{ cm} \times 20\text{ cm} = 1200\text{ cm}^2$. Draft $= 4.8\text{ kN} = 4800\text{ N}$. Specific draft $= \frac{4800\text{ N}}{1200\text{ cm}^2} = 4.0\text{ N/cm}^2$.
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