Neco Model Questions Vol1 2023 Agricultural Science Question 4

Practice practical question 4 from the 2023 Neco Model Questions Vol1 Agricultural Science examination. This question covers Farm Machinery .

Neco Model Questions Vol1 2023 Agricultural Science Practical
Topic: Farm Machinery
Question 4 NECO_MODEL_QUESTIONS_VOL1 • 2023 • AGRICULTURAL_SCIENCE • practical

A small tractor is used to pull a single‑bottom plough across a field. The tractor’s engine is rated at 20 kW at 2000 rpm and its fuel consumption at full load is 8 L h⁻¹. The transmission efficiency is 85 %. The plough creates a furrow 30 cm wide and 15 cm deep. The soil bulk density is 1.4 g cm⁻³ and the average soil resistance to cutting is expressed as a pressure of 0.12 MPa acting on the cross‑sectional area of the furrow. The field to be ploughed is 2 ha. Assume the only power required is to overcome this soil resistance.

Question Parts

( a )
Calculate the theoretical pulling force required to cut the furrow (in newtons).
( b )
Determine the usable power at the wheels after accounting for the transmission efficiency (in kilowatts).
( c )
Using the usable power, find the maximum forward speed of the tractor while pulling the plough (in km h⁻¹).
( d )
Calculate the maximum area that can be ploughed per hour at this speed (in hectares).
( e )
Based on the fuel consumption rate, compute the fuel used per hectare (in litres).

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About This Question

This is Neco Model Questions Vol1 2023 Agricultural Science Question 4. It is one of the practical questions from the 2023 Neco Model Questions Vol1 Agricultural Science examination.

The question covers Farm Machinery .

View More Neco Model Questions Vol1 2023 Agricultural Science Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

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