Waec Model Questions Vol1 2020 Agricultural Science Question 32
Practice objective / multiple choice question 32 from the 2020 Waec Model Questions Vol1 Agricultural Science examination.
A moldboard plough works in a soil where the resistance per unit volume is 150 kN m⁻³. The plough cuts a depth of 0.15 m and has an effective width of 0.30 m. In addition, a turning resistance of 5 kN must be overcome. The tractor moves at 5 km h⁻¹ and the overall power‑train efficiency is 85 %. What minimum engine power in kilowatts is required to operate the plough?
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About This Question
This is Waec Model Questions Vol1 2020 Agricultural Science Question 32. It is one of the objective questions from the 2020 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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