If the impeller of Problem 10.20 rotates between horizontal planes of infinite extent and the flow rate is \(25 \mathrm{~L} / \mathrm{s}\), what rise of pressure may be expected between one point having \(r=150 \mathrm{~mm}\) and another having \(r=225 \mathrm{~mm}\) ?

Data From Problems 10.20

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10.20 A centrifugal pump impeller having dimensions and angles as shown rotates at 500 rpm. Assuming a radial direction of velocity at the blade entrance, calculate the flow rate, the pressure difference between inlet and outlet of blades, and the torque and power required to meet these conditions. 60 75 mm 45 -300 mm- P10.20 50 mm