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A steam power plant operates on the reheat rankine cycle between 15 mpa and 10 kpa. System enters the high pressure turbine at 15 Mpa and 500c at rate of 12 kg/s. steam is then reheated at constant pressure to 500c and 4 Mpa befer it expands in the low pressure turbine. The isentropic efficencies of the turbine and the pump are 85% and 90% respectively. Steam leaves the condeser as saturated liquid.
Detrmine
1- Net power out put
2- Thermal efficiency
5 bolts are made of low carbon steel with a yield point in shear of 19200 psi. the bolts are 38 inch in diameter and
it takes 15 seconds to raise a 1200 kg car and the supporting 300 kg hydraulic lift platform to a height of 2.8 m. the
a disk has a mass of 4kg and a radius of 90mm, it is at rest when it is placed in contact with the belt, which moves with a constat speed (v =15m/s). knowing that friction is .25 between the disk and the belt. Determine the number of revolution by..
a 31-l electric radiator containing heating oil is placed in a 48-m3 room. the room and the radiator oil are initially
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A steel alloy to be used for a spring application must have a modulus of resilience of at least 2.07 MPa (300 psi). What must be its minimum yield strength?
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the adjoining figure illustrates a piston-cylinder arrangement. this cylinder contains helium at 21oc and 1.379 mpa.
a helical compression spring is required to provide a minimum force of 80n at installation and have a working
for air flowing in a converging-diverging nozzle the pressure and temperature at the inlet are 14.7 psia and 70degf. at
the pliers shown in the figure of the book are used to grip a 0.3-in.-diameter rod. knowing that two 60-lb forces are
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