Waec Model Questions Vol1 2017 Agricultural Science Question 21
Practice objective / multiple choice question 21 from the 2017 Waec Model Questions Vol1 Agricultural Science examination.
A centrifugal pump has a impeller diameter of 300 mm and operates at 1450 rpm, delivering a flow of 20 m³/h at a head of 30 m. Using the pump affinity laws, determine the impeller diameter (to the nearest millimetre) and the new operating speed (to the nearest rpm) required to deliver a flow of 30 m³/h while maintaining the same head of 30 m.
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About This Question
This is Waec Model Questions Vol1 2017 Agricultural Science Question 21. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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