Neco 2021 Agricultural Science Question 4

Practice practical question 4 from the 2021 Neco Agricultural Science examination. This question covers Farm Machinery .

Neco 2021 Agricultural Science Practical

Topic: Farm Machinery

Question 4 NECO • 2021 • AGRICULTURAL_SCIENCE • practical

A 45 kW tractor operating at 2000 rpm is used to pull a moldboard plough across a field of 5 hectares. The draft force required by the plough depends on soil moisture content as follows:\n- 10% moisture: 2500 N\n- 15% moisture: 2000 N\n- 20% moisture: 1500 N\nThe field has an average moisture content of 12%. The tractor moves at a constant speed of 5 km/h and the plough width is 2 m. The tractor’s specific fuel consumption is 0.25 L per kWh of engine output. Using this information, answer the questions below.

( a )

Determine the average draft force required for the 12% moisture condition by linear interpolation.

( b )

Calculate the power required to pull the plough at the given speed.

( c )

Estimate the total fuel consumed to cultivate the whole 5‑ha field.

( d )

List three possible sources of error when measuring the draft force in the field.

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This is Neco 2021 Agricultural Science Question 4. It is one of the practical questions from the 2021 Neco Agricultural Science examination.

The question covers Farm Machinery .

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