Gce Model Questions Vol1 2023 Agricultural Science Question 50
Practice objective / multiple choice question 50 from the 2023 Gce Model Questions Vol1 Agricultural Science examination.
A tractor pulls a moldboard plough of total working width 2.0 m. The soil resistance per metre width is modelled by \(R = a + b v^{2}\) (N m⁻¹), where \(a = 1500\ \text{N m}^{-1}\), \(b = 200\ \text{N s}^{2}\text{m}^{-3}\) and \(v\) is the tractor speed in m s⁻¹. The tractor is required to travel at a constant speed of 5 km h⁻¹. Assuming a drivetrain efficiency of 85 %, calculate the minimum engine power (in kW) that the tractor must develop to maintain this speed.
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About This Question
This is Gce Model Questions Vol1 2023 Agricultural Science Question 50. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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