Gce Model Questions Vol1 2022 Agricultural Science Question 47
Practice objective / multiple choice question 47 from the 2022 Gce Model Questions Vol1 Agricultural Science examination.
A farmer harvests 5 t of maize with an initial moisture content of 25 % (wet basis). The target moisture for safe storage is 13 % (wet basis). During drying, the moisture content \(M(t)\) (in %) decreases according to \(\frac{dM}{dt} = -k\,(M - M_e)\) where the equilibrium moisture \(M_e = 10\%\) and the proportionality constant \(k = 0.04\ \text{h}^{-1}\). (i) Calculate the drying time required to reach the target moisture. (ii) The dryer can handle only 1 t per batch and can operate continuously 24 h per day. Determine the minimum number of calendar days needed to dry the whole 5 t crop. Provide the drying time per batch (hours, to one decimal) and the total days (to one decimal).
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About This Question
This is Gce Model Questions Vol1 2022 Agricultural Science Question 47. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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