A farmer needs to pump water from a well 12 m deep at a flow rate of 30 L min$^{-1}$. The pump has an efficiency of 70 % and the density of water is $1000\ \text{kg m}^{-3}$. Calculate the minimum shaft power (in kW) that the motor must supply.

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Accepted Answer

Approximately 0.08 kW (84 W) shaft power

Gce Model Questions Vol1 2024 Agricultural Science Question 39

A farmer needs to pump water from a well 12 m deep at a flow rate of 30 L min\(^{-1}\). The pump has an efficiency of 70 % and the density of water is \(1000\ \text{kg m}^{-3}\). Calculate the minimum shaft power (in kW) that the motor must supply.

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Gce Model Questions Vol1 2024 Agricultural Science Question 39

A farmer needs to pump water from a well 12 m deep at a flow rate of 30 L min\(^{-1}\). The pump has an efficiency of 70 % and the density of water is \(1000\ \text{kg m}^{-3}\). Calculate the minimum shaft power (in kW) that the motor must supply.

Answer Options

About This Question

Master the Exam!

A farmer needs to pump water from a well 12 m deep at a flow rate of 30 L min\(^{-1}\). The pump has an efficiency of 70 % and the density of water is \(1000\ \text{kg m}^{-3}\). Calculate the minimum shaft power (in kW) that the motor must supply.