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Air is compressed in a reversible steady-flow system from 15 psia and 100?F to an exit pressure of 100 psia. The compression process is polytropic, with a polytropic exponent of n = 1.250 the air may be assigned to behave as an ideal gas with constant specific heats. Determine: (i) the change in entropy, (ii) the work of compression per unit mass and (iii) the heat transferred per unit mass
the motion of the slender 10kg rod AB is guided by collars of negligible mass that slide freely on the vertical and horizontal rods. knowing that the bar is released from rest when θ=30, determine the velocity of the collars A and B when θ = 60.
Steam enters an adiabatic turbine at 6 MPa, 600°C, and 80 m/s, and leaves at 50 kPa, 100°C, and 140 m/s (T0 = 25°C, P0 = 100 kPa). If the power output of the turbine is 5 MW,
steam expands in a turbine steadily at a rate of 25000 kgh entering at 6 mpa and 450degc and leaving at 20 kpa as a
a tank with a volume of 1 m3 is filled with 10 kg of water. with a pressure of 1.1 mpa in the tank the water is a
a piston cylinder has r-134a at -20oc 100 kpa which is compressed to 500 kpa in a reversible adiabatic process. find
A liquid is draining from a cylindrical vessel through a tube in the bottom of the vessel. If the liquid has a specific gravity of .85 and drains out at a rate of 1 cm^3/s , what is the viscosity of the liquid?
It is proposed to use water instead of refrigerant-134a as the working fluid in air- conditioning applications where the minimum temperature never falls below the freezing point. Would you support this proposal? Explain.
consider a horizontal pipe of diameter 20 cm. steam enters the pipe as a saturated vapor at 0.5 mpa with a velocity of
high pressure steam steam 1 at a rate of 1000kgh initially at 3.5 mpa and 350 c is expanded in a turbine to obtain
a large fireplace in a ski lodge has a glass firescreen which covers a vertical opening in the fireplace. the opening
the rod of the fixed hydraulic cylinder is moving to the left with a constant speed. determine the corresponding
Schematically draw the evolution of the microstructure of Fe-C alloy as T decreases from 1000C to 500C, with the following composition (wt % of C)
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