Neco 2017 Agricultural Science Question 41

Practice objective / multiple choice question 41 from the 2017 Neco Agricultural Science examination.

Neco 2017 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 41 NECO • 2017 • AGRICULTURAL_SCIENCE • objective

An agricultural tractor is to pull a moldboard plough. The soil resistance is \(150\ \text{kN/m}\). The plough width is \(0.30\ \text{m}\) and the desired forward speed is \(5\ \text{km/h}\). The drivetrain efficiency is \(85\%\). Determine the minimum engine power in kW required and state whether a tractor rated at \(45\ \text{kW}\) is adequate.

Answer Options

A. Yes; the required engine power is about 74 kW, which is sufficient for the tractor's 45 kW rating.
B. No; the required engine power is about 40 kW, which is below the tractor's 45 kW rating.
Correct Answer C. No; the required engine power is about 74 kW, which exceeds the tractor's 45 kW rating.
D. Yes; the required engine power is about 30 kW, which is well within the tractor's 45 kW rating.
Correct Answer
C
Correct Option:
No; the required engine power is about 74 kW, which exceeds the tractor's 45 kW rating.

About This Question

This is Neco 2017 Agricultural Science Question 41. It is one of the objective questions from the 2017 Neco Agricultural Science examination.

Difficulty level: Medium .

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