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An electric motor converts electricity to rotating shaft work with an efficiency of 54%. The rotating shaft turns the impeller in the pump which, in turn, increases the pressure of the water (i=1000kg/m3) by 200 kPa. If the motor is consuming 3.5 kW of electricity, and water flow through the pump is 3.95 L/s, what is the mechanical efficiency with which the pump converts the rotation of the impeller into water pressure?
question a pump station has been designed to lift water out of a 6 metre deep pit vented to atmosphere via a
in a diesel cycle the cutoff ratio is two and the compression ratio is eighteen. at state 1 the air is 14.7 psia and
a police car traveling at 101.7 kmh is traveling west chasing a motorist traveling at 77.0 kmh.a what is the velocity
derive the model equation mass and temperature for a cstr reactor with a first order reqaction a product. assume
while at the county fair you decide to ride the ferris wheel. having eaten too many candy apples and elephant ears you
superheated steam at 15 mpa and 600 c enters the turbine of a steam power plant and is expanded to an exit pressure of
a 2011 penny is thrown into a pool of water for luck. what is the force acting on the penny if it lands horizontally on
Consider a piston-cylinder assembly containing 10kg of water. Initially the gas has pressure of 20 bar and occupies a volume of1.0 m3. Under these conditions, water does not behave as an ideal gas. System now undergoes a reversible process in which i..
wet steam p12.8 kpa x0.90 enters a heat exchanger with a flow rate of 1.2 kgs. cold water at 12.8 kpa and k also
a simple pulley with the given radius r used to lift heavy objects is positioned 10 feet above ground level. Given that the pulley rotates theta degrees, determine the height to which the pulley is lifted.
air enters a nozzle at 0.5 mpa 420 k and a velocity of 110ms. approximating the flow as isentropic determine the
at a particular location in the ocean the temperature near the surface is 80of and the temperature at a depth of 1500
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