Gce Model Questions Vol1 2023 Agricultural Science Question 32
Practice objective / multiple choice question 32 from the 2023 Gce Model Questions Vol1 Agricultural Science examination.
A farmer has 5 t of maize at 20 % moisture (wet basis) that must be dried to 13 % moisture. Two drying methods are available:\n- Solar dryer: reduces moisture by 0.5 % per hour while the moisture content is above 15 %; once the moisture reaches 15 % the rate falls to 0.2 % per hour. The solar dryer can be used for a maximum of 8 h per day.\n- Forced‑air dryer: reduces moisture at a constant 1.2 % per hour and consumes 5 kWh per hour; electricity costs $0.15 per kWh.\nThe farmer has two days to complete the drying. Determine the schedule (hours of each dryer) that meets the final moisture target at the lowest electricity cost, and state that minimum cost.
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About This Question
This is Gce Model Questions Vol1 2023 Agricultural Science Question 32. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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