A farmer intends to pull a mouldboard plough that is 1.2 m wide. The soil draft coefficient is 10 N per cm of width per cm of depth. The plough operates at a working depth of 15 cm and the tractor moves at 5 km h⁻¹.

Calculate the required draw‑bar power in kilowatts and state the minimum engine power (in kW) the tractor must have if a 20 % power reserve is required.

Question

A farmer intends to pull a mouldboard plough that is 1.2 m wide. The soil draft coefficient is 10 N per cm of width per cm of depth. The plough operates at a working depth of 15 cm and the tractor moves at 5 km h⁻¹.

Calculate the required draw‑bar power in kilowatts and state the minimum engine power (in kW) the tractor must have if a 20 % power reserve is required.

Accepted Answer

Required draw‑bar power ≈ 25 kW; minimum engine power ≈ 30 kW

Neco Model Questions Vol1 2024 Agricultural Science Question 38

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