A centrifugal pump with a 30 cm diameter impeller requires a power input of 45 kW when the flow rate is 12 kL/min against an 18 m head. The impeller is changed to one with a 25 cm diameter. Determine The expected flow rate. Actual head. Input power if the pump speed remains the same. (i) (ii) (iii)

A centrifugal pump with a 30 cm diameter impeller requires a power input of 45 kW when the flow rate is 12 kL/min against an 18 m head. The impeller is changed to one with a 25 cm diameter. Determine The expected flow rate. Actual head. Input power if the pump speed remains the same. (i) (ii) (iii)

Elements Of Electromagnetics

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Author:Sadiku, Matthew N. O.

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A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

A centrifugal pump with a 30 cm diameter impeller requires a power input of
45 kW when the flow rate is 12 kL/min against an 18 m head. The impeller is
changed to one with a 25 cm diameter. Determine
The expected flow rate.
Actual head.
(i)
(ii)
(iii)
Input power if the pump speed remains the same.

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