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A supersonic nozzle is also a convergent-divergent duct, which is fed by a large reservoir at the inlet to the nozzle. In the reservoir of the nozzle, the pressure and temperature are 10 atm and 300 K, respectively. At the nozzle exit, the pressure is 1 atm. Calculate the temperature and density of the flow at the exit. Assume the flow is isentropic and, of course, compressible
a steam power plant operates on a simple ideal rankine cycle between the pressure limits of 3mpa and 50kpa. the
a closed rigid tank whose volume is 1.5 m3 contains refrigerant 134a initially a two phase lipuid-vapor mixture at 10c.
consider a piston-cylinder assembly containing 0.12 kg of nitrogen at 300 k and 1 atm state 1. the nitrogen is heated
nitrogen gas at 60 kpa and 7 degrees celsius enter an adiabatic diffuser steadily with a velocity of 195 ms and leaves
Find the stress in both members shown below and what steel specifications (types of steel) are suitable for structural applications?
a closed system consisting of 0.13 lbmol of air undergoes a polytropic process from a pressure of 14 psia and specific
a machinist is making engine parts with axle diameter of 0.7 inch. a random sample of 15 parts shows mean diameter
a refrigerator with a coefficient of performance of 4.0 transfers heat from a cold region at -20 degrees c to a hot a
three coupled street cars are moving at a speed of 32 kmhr down a 7 degree incline. each car has a weight of 198 kn.
Evaluate the shearing and normal stresses at points H and J located at the ends of the horizontal and vertical diameters of transverse section located 2.5 in. to the left of bearing B.
Steam at 100 psia, 500oF is throttled to 20 psia. Changes in kinetic energy are negligible for this process. Determine the final temperature and specific volume of the steam.
a long aluminum bar has a diameter of 11 cm and is initially uniform in temperature at 300 c. if it suddenly exposed to
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