Waec Model Questions Vol1 2024 Agricultural Science Question 48
Practice objective / multiple choice question 48 from the 2024 Waec Model Questions Vol1 Agricultural Science examination.
A two‑share moldboard plough is to be pulled by a tractor. For a single share the draft force is D = a + b·v² where a = 1 200 N, b = 25 N·s² m⁻² and v is the tractor speed in m s⁻¹. The total draft for the plough is the sum of the drafts of both shares, increased by 10 % because of interaction between the shares. Wet soil conditions add a further 15 % to the draft. The tractor moves at 3 km h⁻¹ and the transmission efficiency is 80 %. Determine the minimum engine power (in kW) required at the crankshaft. If the tractor is equipped with a 25 kW diesel engine, will it be sufficient?
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About This Question
This is Waec Model Questions Vol1 2024 Agricultural Science Question 48. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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