Waec Model Questions Vol1 2022 Agricultural Science Question 4

Practice practical question 4 from the 2022 Waec Model Questions Vol1 Agricultural Science examination. This question covers Farm Machinery, Tractor Power and Fuel Efficiency .

Waec Model Questions Vol1 2022 Agricultural Science Practical
Topics: Farm Machinery Tractor Power and Fuel Efficiency
Question 4 WAEC_MODEL_QUESTIONS_VOL1 • 2022 • AGRICULTURAL_SCIENCE • practical

A small diesel‑powered tractor (rated engine power 25 kW) was tested for field performance on a rectangular farm plot that is 100 m long and 50 m wide (area = 0.5 ha). The tractor was fitted with a two‑row plough whose effective working width is 2 m. During the test the tractor covered the whole plot in 45 minutes. The average draft (pulling) force recorded by a dynamometer attached to the drawbar was 12 kN. The tractor’s fuel consumption at full load is 5 L h⁻¹. Using the information given, answer the following:

Question Parts

( a )
Calculate the actual power (in kW) required to pull the plough. Show all steps.
( b )
Compare the actual power obtained in (a) with the tractor’s rated engine power and comment on the utilisation factor of the engine.
( c )
Determine the fuel efficiency expressed as hectares per litre of diesel used during the test.
( d )
Suggest two maintenance practices that could improve the tractor’s fuel efficiency and briefly explain how each practice contributes to the improvement.

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About This Question

This is Waec Model Questions Vol1 2022 Agricultural Science Question 4. It is one of the practical questions from the 2022 Waec Model Questions Vol1 Agricultural Science examination.

The question covers Farm Machinery, Tractor Power and Fuel Efficiency .

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