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1. What is the rationale for operating two geometrically similar pumps differing in feature size at the same flow coefficient?
2. A centrifugal pump having an impeller diameter of 1 m is to be constructed so that it will supply a head rise of 200 m at a flowrate of 4.1 mss /s of water when operating at a speed of 1200 rpm. To study the characteristics of this pump, a 1/5 scale, geometrically similar model operated at the same speed is to be tested in the laboratory. Determine the required model discharge and head rise. Assume that both model and prototype operate with the same efficiency (and therefore the same flow coefficient).
the compressor turbine of a simple gas turbine each have isentopic efficiencies of 90. the compressor pressure ratio is
Find the final volume and pressure and the work and heat transfer in the process.
a mixture of vapor and liquid water with mass of m.1kg is contained in a rigid glass vessel with an initial temperature
bar ab of mass m and mass moment of inertia i 112ml2 is constrained to move within the channel as shown. the bar is
an aluminum rod is made in the form of a hollow square tube. 2.25 in outside with a wall thickness of 0.120 in. its
Volunteer Pharmaceuticals (VP) wants to set aside money in the R&D fund to seek supplemental drug applications of its two newly developed drugs. Instead of putting away $780 million now, VP plans to set aside $A each year from year 1 through 40. What..
air is heated electrically in a constant-diameter tube in a steady-flow process. at the entrance the air has a velocity
A radial vortex in water rotates at a speed of 3 radians/sec. The center of the vortex is also moving downstream at a linear velocity of 2 ft/sec. Create a plan-view plot that shows the path line of a fluid particle that rotates at a fixed radius of ..
electronic components mouted on a flat plate are cooled by convection to the surroundings and by liquied water
the average electrical generating capacity of the united states was about 475000 mw in 2007. if trends continue this
Glycerin at 20 °C flows upward in a vertical 75-mmdiameter pipe with a centerline velocity of 1.0 m/s. Determine the head loss and pressure drop in a 10-m length of the pipe.
A mass weighs 15 Newtons on the moon, where the acceleration of gravity is 1.67 m/s^2. Determine the weight, in Newtons, on Mars where g= 4.23 m/s^2
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