Neco Model Questions Vol1 2019 Agricultural Science Question 33
Practice objective / multiple choice question 33 from the 2019 Neco Model Questions Vol1 Agricultural Science examination.
The diagram shows a 30‑hp tractor pulling a disc harrow. The tractor engine runs at 1,500 rpm. The transmission is in 4th gear with a gear ratio of 1:2.5 (engine : transmission output). The PTO is driven directly from the transmission output and must rotate at 540 rpm. The disc harrow requires a rotational speed of 300 rpm and is driven from the PTO via a reduction gear. The tractor wheels have a radius of 0.5 m. Determine: (a) Whether the selected 4th gear provides the required PTO speed; if not, calculate the reduction gear ratio needed between the transmission output and the PTO to obtain 540 rpm. (b) The linear speed of the tractor in km/h (use the transmission output speed as the wheel speed).
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About This Question
This is Neco Model Questions Vol1 2019 Agricultural Science Question 33. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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