Neco 2024 Agricultural Science Question 15

Practice objective / multiple choice question 15 from the 2024 Neco Agricultural Science examination.

Neco 2024 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 15 NECO • 2024 • AGRICULTURAL_SCIENCE • objective

A tractor must pull a plough that requires a drawbar pull of 15 kN at a forward speed of 5 km/h. The drivetrain efficiency is 85%.\n\n(a) Calculate the minimum engine power (in kW) that must be delivered to the drawbar.\n(b) If the tractor's engine runs at 2000 rpm and the wheel radius is 0.5 m, determine the minimum gear ratio (engine rpm : wheel rpm) required to achieve the needed speed.

Answer Options

A. Engine power ≈ 22.8 kW; Minimum gear ratio ≈ 70:1
B. Engine power ≈ 20.0 kW; Minimum gear ratio ≈ 60:1
C. Engine power ≈ 30.2 kW; Minimum gear ratio ≈ 90:1
Correct Answer D. Engine power ≈ 24.5 kW; Minimum gear ratio ≈ 75:1
Correct Answer
D
Correct Option:
Engine power ≈ 24.5 kW; Minimum gear ratio ≈ 75:1

About This Question

This is Neco 2024 Agricultural Science Question 15. It is one of the objective questions from the 2024 Neco Agricultural Science examination.

Difficulty level: Medium .

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