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The pump of a water distribution system is powered by a 15-kW electric motor whose efficiency is 90 percent. The water flow rate through the pump is 50 L/s. The diameters of the inlet and outlet pipes are the same, and the elevation difference across the pump is negligible. If the pressures at the inlet and outlet of the pump are measured to be 100 kPa and 300 kPa (absolute), respectively, determine
(a) The mechanical efficiency of the pump and
(b) The temperature rise of water as it flows through the pump due to the mechanical inefficiency.
sketch a system of mass m which is accleerated from rest to a velocity v2 raised to a height of elevation h and cooled
a 1 kg block of copper at 350degc is quenched in a 10 kg oil bath initially at ambient temperature of 20degc. calculate
Calculate the velocity using displacement data and calculate the velocity using acceleration data - Plot the data and find the best curve fit for displacement and for acceleration.
If have to do a material selection case study for a rice cooker outer body where can I find the necessary requirement specifications of the material?
A piston-cylinder device contains 12 kg of saturated R-134a vapor at 3.2 bar. An electric source supplies 8 A current to a resistor within the cylinder for 4 minutes and there is heat transfer of 400 kJ to the system. During these energy interactions..
consider the steady operation of a different self-contained refrigeration package for a shipping container. the device
an orifice meter is installed in a 12 inch ductile iron pipe carrying water at 60 degrees f. a mercury manometer is
A plastic coating is applied to wood panel by first depositing molten polymer on a panel and then cooling the surface of the polymer by subjecting it to air flow at 25oC. The heat of reaction associated with solidification of polymer may be neglected..
a student plays two notes on the piano keyboard simultaneously. the white key has a frequency of 352 hz and the black
Water vapor enters a turbine at p1= 5 bar, T1=320? C and exits at p2 = 1 bar. The work generated is measure as 250 KJ per kg of water vapor flowing. Determine the isentropic turbine efficiency.
calculate the transverse modulus of the peek/carbon fiber composite with 30% volume fraction by tow method. the modulus of peek is 3.8 GPa and the modulus of the carbon fiber is 400GPa. assume the reinforcing factor.
Construct the homogeneous solution in terms of four constant that could be determined from initial conditions and show the equations of motion
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