What type of impeller should be selected for pumping water (60°F) at 1200 rpm for a pump head of 750 ft and discharge of 15 cfs? Mixed-flow impeller Laminar-flow impeller Radial-flow impeller Axial-flow impeller

The inlet of a centrifugal pump is 7 ft above a water surface level. The reentrant inlet (KIN = 1) includes 12 ft of 2 in. pipe (k, = 0.0002 ft) and contains one long sweep elbow (Kel = 0.41). The 2 in. outlet line discharges to the atmosphere and contains two long sweep elbows and one check valve (Kcv = 2.1) in its 200 ft length. The discharge is 20 ft above the original water surface. Given the attached pump curve, determine the flow of water at 70°F (u = 1.059 x 10-5 ft²/s). 120 110 100 90 80 70 60 50 40 30 20 10 10 20 30 40 50 60 70 80 90 100 DISCHARGE, IN GALLONS PER MINUTE HEAD, IN FEET

3/3 Summarize the rotor theory of centrifugal pumps, focusing on the following topics: Influence of blade shape on lifting height Fundamental Equation of Turbo Pumps

Please solve and include the units. Thanks!

! need it correctly

22. A centrifugal pump is directly coupled to a motor. The pump rating is 3,600 liters per minute against a total head of 8 m of water. Pump efficiency is 65% at shaft speed of 550 rpm. Calculate the torsional stress induced on the 40 mm diameter motor shaft in kPa. C. 9,000 D. 11,000 A. 8,000 B. 10,000

Relative Centrifugal Force (RCF) RCF = 1.119 x 10 x (rpm)² x r %3D

At mid-radius an axial turbine stage is designed for 50% reaction, zero outlet swirl, and an axial velocity component of 200 m/s (uniform through the stage). The absolute flow angle at outlet from the stator is 65° from the axial direction. a.At the design point, what is the work done by the fluid at mid-radius on the rotor (kJ/kg)? b.For no change from turbine design flow conditions, but with a 20% drop from design rotor rpm, estimate the work (kJ/kg) done by the rotor at mid-radius.

Shown in the Figure is the complete pump performance chart for a  3×4-10 centrifugal pump at 1750 rpm. The centrifugal pump must deliver at least 200 gal/min of water  at the total head of 50 ft.  (1)  Which impeller should be selected? _________     A. 9 in   B. 8 in   C. 7 in   D. 10 in

what is a positive displacement pump? In what ways does it differ from a centrifugal pump.