Neco 2022 Agricultural Science Question 4

Practice practical question 4 from the 2022 Neco Agricultural Science examination. This question covers Farm Machinery .

Neco 2022 Agricultural Science Practical

Topic: Farm Machinery

Question 4 NECO • 2022 • AGRICULTURAL_SCIENCE • practical

A farmer uses a 2‑tonne 4‑stroke diesel tractor to cultivate a field. The tractor's engine is rated at 20 kW at 1500 rpm. During a field test the draw‑bar pull recorded was 2.5 kN while the tractor moved at a constant speed of 4 km h⁻¹. The fuel consumption rate is 5.0 L h⁻¹ and the calorific value of diesel is 35 MJ L⁻¹.

Question Parts

( a )

Calculate the actual power being delivered at the draw‑bar in kilowatts.

( b )

Determine the mechanical efficiency of the tractor based on the rated engine power and the draw‑bar power.

( c )

The tractor consumes fuel at 5.0 L h⁻¹. Using the calorific value given, calculate (i) the fuel energy supplied per hour and (ii) the overall energy efficiency using the draw‑bar power as useful output.

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About This Question

This is Neco 2022 Agricultural Science Question 4. It is one of the practical questions from the 2022 Neco Agricultural Science examination.

The question covers Farm Machinery .

View More Neco 2022 Agricultural Science Questions More Neco Practice Questions Back to Questions

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