Gce Model Questions Vol1 2018 Agricultural Science Question 3
Practice objective / multiple choice question 3 from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
A tractor must pull a moldboard plough 1.5 m wide at a speed of 5 km h\(^{-1}\). Soil resistance per metre width is \(R = 0.15v + 0.05\) kN m\(^{-1}\) where \(v\) is speed in km h\(^{-1}\). The tractor weighs 3 t and its rolling resistance is 0.02 times its weight (use \(g = 9.81\) m s\(^{-2}\)). Assuming an overall drivetrain efficiency of 0.85, calculate the minimum engine power required in kilowatts (round to the nearest whole kW).
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About This Question
This is Gce Model Questions Vol1 2018 Agricultural Science Question 3. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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