Neco 2020 Agricultural Science Question 41
Practice objective / multiple choice question 41 from the 2020 Neco Agricultural Science examination.
During a field preparation, a plough depth knob is calibrated such that each full turn increases the nominal depth by \(2.5\) cm. The current setting is \(3\) turns from the minimum. Because of the heavy clay soil, the effective depth achieved is reduced by \(10\%\) of the nominal depth. The farmer wants an effective soil turnover depth of at least \(15\) cm. How many total turns from the minimum should the knob be set to meet the target? Give the smallest whole number of turns.
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About This Question
This is Neco 2020 Agricultural Science Question 41. It is one of the objective questions from the 2020 Neco Agricultural Science examination.
Difficulty level: Medium .
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