3.A centrifugal pump impeller runs at 1400 rpm, and vanes angle at exit is25 degrees. The tangential velocity at exit is 29.33 m/s. Whirl velocity at impellertip is 23.75 m/s. The impeller has an internal diameter of 0.2 m. Assuming aconstant radial flow through the impeller at 2.6 m/s. Calculate:a. The vanes angle at exitb. The angle made by the absolute velocity of water at exit with tangentc. The inlet vane angled. The work done per kg of watere. Draw the velocity triangle of the systemf. Find the impeller external diameter

Answered: Image /qna-images/answer/f36e9752-27c1-4a3c-ae67-5f8f76b3b0f2.jpg

Answered: 3. 25 degrees. The tangential velocity…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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A Petlon Wheel having semicircular buckets and working under a head of 150 m runs at a speed of 600 rpm. If the discharge through the nozzle is 45 lit/s. Find the power available at the nozzle and the hydraulic efficiency. Take wheel diameter as 0.5 m and C,, for the nozzle as 0.98.
Q4 see photo provided.
Paralel-connected double centrifugal pumps each have a specific speed of 28 and operate at 1350 rpm while delivering water with outlet velocity of flow of 3 mv's and ‘performing 82% manometric cfficicacy. The impeller outer diameter and blade angle at outlet are 0.25 m and 25 to the tangent respectively. The double pumps are replaced by series-connected four centifugal pumps 1o meet the same duty (same head and flow rate) with a specific speed of 30 for each pump. The outer diameter of the impeller s 0.5 m and passage width is 0.03 m. At exit the blades are backward curved and making an angle of 14° with tangent. Draw the velocity diagrams at nlet and outlet. Determine the manometric efficiency of each pump for the in series- connected pump system?
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An idelaized centrifugal pump, data given as follows; Blade outer radius of blade = 30 mm Power = 1 KW - Running speed = 1000 rpm Entry of liquid into the pump is axial and exit from the pump is radial with respect to impeller. Determine the mass fow rate of the liquid through the pump?
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PROBLEM 5 An axial flow pump is required to deliver 1m3/s at 7m head while running at 960 rpm. Its outer diameter is 50 and hub diameter is 25 cm. Find the following: (1) flow velocity, which is assumed to be constant from hub to tip, and A. 4.59 m/s B. 6.791 m/s C. 60.7 m/s D. 39.3 m/s (2) power required to drive the pump if overall efficiency is 84%. A. 81.75 kW B. 12.03 kW C. 40.7 kW D. 60.9 kW
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The impeller of a centrifugal pump has a diameter of 115 mm and axial width of 21 mm at the outlet. The flow rate through the impeller is 3.1 x 10-3 m /s when it rotates at 1200 rpm and the outlet blade angle is 19°.Assuming one dimensional ideal flow theory, calculate; (i) the head generated by the pump when handling water; (ii) the rate of flow through the pump

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