The closed impeller of a centrifugal pump is not suitable for..clear fluidcorrosive fluidcloggy fluidviscous fluidSliding-vane pump can not handle...non-viscous fluidviscous fluidpaper publbfluid consisting slurriesCavitation can occur in...water turbinespumps and water turbinespumpspumps and fansThe swirl in Kaplan turbine is generated by....wicket gates (inlet guide vanes)directing the flow from radial to axial directionsadjustable propeller bladesO OO OO OO O

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Answered: The closed impeller of a centrifugal…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Q-- Consider the following data relating toperformance of a centrifugal pump:speed 1200 rpm, flow rate 30 L/s, head 20 m, and power 5 kW. If the speed of the pump is increased to 1500 rpm, assuming the efficiency isunaltered, Find the new flow rate and head.
A "spa tub" is to be designed to replace bath tubs in reno- vations. There are to be 6 outlet nozzles, each with a di- ameter of 12 mm, and each should have an outlet velocity of 12 m/s. What is the required flow rate from the single pump that supplies all of these nozzles? If there is one suction line leading to the pump, what is the minimum diameter to limit the velocity at the inlet of the pump to 2.5 m/s?
BOOK: FLUID POWER, 3e, JAMES A. SULLIVAN PROBLEM: 7 - 1
The impeller of a centrifugal pump having external and internal diameter 500mm and 250mm respectively, width at out let 50mm and running at 200rpm works against a head of 48m. The velocity of flow through the impeller is constant and equal to 3m/s the vanes are set back at an angle of 400 at outlet. Determine A.inlet vane angle B.workdone by the impeller on water per second c.manometric efficiency
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Consider the following data relating toperformance of a centrifugal pump:speed 1200 rpm, flow rate 30 L/s, head 20 m, and power 5 kW. If the speed of the pump is increased to 1500 rpm, assuming the efficiency isunaltered, Find the new flow rate and head.
A volute centrifugal pump has the following performance data at the best efficiency point: volumetric flow rate Q-0.015 m's Ah - 65 m total head required net positive suction head NPSH- 16 m liquid power impeller speed impeller diameter Evaluate the performance of an homologous pump which operates at an impeller speed of 29.2 rev/s but which develops the same total head Ah and requires the same NPSH. PE- 14000 W N= 58.4 revis D-0.22 m
A•, PK/s ull E ZAIN IQ Asiacell د واجب الفصل الثا. . . A single stage centrifugal pump has an impeller of 250 mm diameter which rotates at 1,800 rpm and lifts 60 lit/sec to 25 m with an efficiency of 70%. Obtain the number of stages and diameter of each impeller of a similar multi-stage pump to lift 75 lit/sec to 175 m at 1,500 rpm. (8 stages ; 280 mm dia) The impeller of a centrifugal pump has an outer diameter of 35 cm and runs at 1,000 rpm. The blades are bent at 150° to the direction of motion at discharge and the radial velocity of flow is constant through the impeller at 2'5 m/sec. The measured head across the pump is 20 m and the frictional resistance of the pump is estimated to be 2 m. Find the efficiency according to velocity triangles. (76'4%)
Determine the maximum suction elevation in feet below pump centerline
2. Draw a neat sketch of Reciprocating Pumps and explain it working principle
1. A centrifugal pump delivers 900 ?3/ℎ? of sea water (sp.gr.= 1.03) from a source wherethe water level varies 2 m from high to low tide level. The pump centerline is located2.6 m above the surface of the water at high tide. The pump discharges into theatmospheric surface condenser, 3 m above the pump centerline. Loss of head due tofriction in the suction pipe is 0.8 m and that in the discharge side is 3 m. Pump is directlycoupled to a 1750 rpm, 460 volts, 3 phase, 60 Hz. Calculate: a) total dynamic headb) pump theoretical powerc) power to drive the pump if pump efficiency is 82%

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