Neco Model Questions Vol1 2024 Agricultural Science Question 4
Practice objective / multiple choice question 4 from the 2024 Neco Model Questions Vol1 Agricultural Science examination.
A tractor with a 45 kW engine is used for ploughing. The required drawbar power is given by \(P = \dfrac{F \times v}{\eta}\), where \(F\) is the draft force in kN, \(v\) is the forward speed in m s⁻¹, and \(\eta = 0.85\) is the transmission efficiency. The draft force for the plough depends on soil moisture \(s\) (in %) as \(F = 2 + 0.04s\) (kN). The field has an average soil moisture of 20 % and the tractor moves at 5 km h⁻¹. The plough cuts a strip 2.5 m wide. The tractor's specific fuel consumption is 210 g kWh⁻¹ and diesel density is 0.85 kg L⁻¹. How many litres of diesel are required to plough a 10‑hectare field? Give your answer to two decimal places.
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This is Neco Model Questions Vol1 2024 Agricultural Science Question 4. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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