Neco Model Questions Vol1 2024 Agricultural Science Question 4

Practice practical question 4 from the 2024 Neco Model Questions Vol1 Agricultural Science examination. This question covers Farm Machinery, Fuel efficiency, Specific fuel consumption, Error analysis .

Neco Model Questions Vol1 2024 Agricultural Science Practical
Topics: Farm Machinery Fuel efficiency Specific fuel consumption Error analysis
Question 4 NECO_MODEL_QUESTIONS_VOL1 • 2024 • AGRICULTURAL_SCIENCE • practical

A small diesel tractor (rated power 30 kW) is being evaluated for fuel efficiency under different loads. The following fuel‑consumption data were recorded during steady‑state operation on a level field: - No load (0 % of rated power): 5 L h⁻¹\n- 50 % load (15 kW): 8 L h⁻¹\n- Full load (100 % rated power, 30 kW): 12 L h⁻¹ Using the information above, answer the questions that follow:

Question Parts

( a )
State the fuel consumption per hour at no load and at full load.
( b )
Calculate the specific fuel consumption (SFC) in L kWh⁻¹ for the 50 % and 100 % load conditions and indicate which load gives the lower SFC.
( c )
Assuming fuel consumption varies linearly with load percentage, derive the linear equation for fuel consumption (F, in L h⁻¹) as a function of load percentage (x). Using this equation, estimate the fuel consumption and SFC at 75 % load and state whether the SFC at 75 % load is higher or lower than at 100 % load.

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About This Question

This is Neco Model Questions Vol1 2024 Agricultural Science Question 4. It is one of the practical questions from the 2024 Neco Model Questions Vol1 Agricultural Science examination.

The question covers Farm Machinery, Fuel efficiency, Specific fuel consumption, Error analysis .

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