Gce Model Questions Vol1 2017 Agricultural Science Question 3
Practice objective / multiple choice question 3 from the 2017 Gce Model Questions Vol1 Agricultural Science examination.
A tractor must pull a 1.5‑m‑wide moldboard plough at a speed of 5 km h⁻¹ to a depth of 15 cm. The soil draft coefficient is 150 N m⁻¹ cm⁻¹. The tractor's axle load is 2.5 t and the rolling‑resistance coefficient of the wheels is 0.02 times the axle load. (i) Calculate the total draw‑bar pull required (in newtons). (ii) Determine the minimum engine power rating (in kW) needed, assuming a drivetrain efficiency of 85 %. Round the answer up to the nearest whole kilowatt.
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About This Question
This is Gce Model Questions Vol1 2017 Agricultural Science Question 3. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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