Waec Model Questions Vol1 2023 Agricultural Science Question 13
Practice objective / multiple choice question 13 from the 2023 Waec Model Questions Vol1 Agricultural Science examination.
A tractor pulls a plough that requires a draft force given by F = a + b(M‑M_opt)², where M is the soil moisture (% dry basis). For the soil in question a = 1500 N, b = 200 N/(%²) and the optimum moisture M_opt = 12%. On a day when the moisture is 15% the tractor moves at 5 km/h. Assuming an overall mechanical efficiency of 85%, what is the minimum engine power (in kW) required? Give your answer to one decimal place.
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About This Question
This is Waec Model Questions Vol1 2023 Agricultural Science Question 13. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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