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A piston/cylinder arrangement contains water of quality x = 0.7 in the initial volume of 0.1 m3, where the piston applies a constant pressure of 200 kPa. The system is now heated to a final temperature of 200°C. Determine the work and the heat transfer in the process.
The stresses at a point in plane stress on a sheet metal roof were found to be sigma_xx = 10 ksi (C), sigma_yy = 20 ksi (C) and Tau_xy = 30 ksi using matrix methods a) determine the normal and shear stresses on a plane passing through the point that ..
a house is maintained at 75degf in the winter by a heat pump. the house is losing heat at a rate of 60000 btuh through
Assume that the board weighs 25 kg and deflects 10 cm statically when the person stands on it. What is the static safety factor if the board material has an ultimate stress of 200 MPa in the longitudinal direction
A helical compression spring made from hard drawn wire needs to be designed to fit inside a 50mm cylindrical cavity and there must be enough space inside the coils for a 20mm cylindrical guide rod.
Given values of the diffusion coefficient for carbon in iron at 850°C and 950°C, we can calculate the activation energy for the diffusion of carbon in iron. the activation energy for vacancy migration in copper, we can calculate the activation energy..
The vapour has 5 K of superheat at entry to the compressor.In each case calculate the C.O.P.(ref.) and the refrigerating effect per kg. What would be the C.O.P.(ref.) of a reversed Carnot cycle operating between the same saturation temperatures?
At the instant specified the magnitude of the vertical component of the linear acceleration of the particle at the point B was A. 4.50 fps per sec. C. 7.50 fps per sec. B. 5.50 fps per sec. D. 9.0 fps per sec.
a hot water stream at 80 c enters a mixing chamber with a mass flow rate of 0.5 kgs where it is mixed with a stream of
the structure of a house is such that it loses heat at a rate of 4825 kjh per degree celcius difference between the
a 0.7-lb block rests on top of a 0.5-lb block supported by but not attached to a spring of constant 9 lbft. the upper
consider a steam power plant with reheat that operates on a modified rankine cycle. steam enters the high-pressure
a spherical communication satellite with a diameter of 2.5m is orbiting around the earth. the outer surface of the
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