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A cook filled a pressure cooker with 3 kg water at 20?C and a small amount of air and forgot about it. The pressure cooker has a vent valve, so if P > 200 kPa, steam escapes to maintain a pressure of 200 kPa. How much entropy was generated in the throttling of the steam through the vent to 100 kPa when half of the original mass escaped?
From the distances and deflections computed in Problem 11.8, compute the chords (six) required for layout directly on offsets 50 ft right and 50 ft left of the c L.
A distance of 72.55 ft is recorded using a steel tape weighing 0.016 lb per foot. The tapes is supported only at the ends with a tension of 15 lb. Find the distance corrected for sag.
a hollow steel shaft with an outside diameter of 400 mm and inside diameter of 300mm is subjected to the torque of 300 Kn. The modulus of rigidity for the steel is 80 GPa.
A closed system of 0.123kg undergoes a frictionless, quasi-static process along the path PV=C from 100kpa to a final state where the volume is twice the initial volume.
What is the largest circle that can be inscribed within a polygon with corner coordinates (600,800), (900, 300), (500, 100), and (100, 40) Find the radius of the largest circle and show how you found it from these coordinates.
A new rural by-pass has been proposed for a small town, with three possible routes under consideration. Using the data in the table below and the procedures in WebTAG (see the link below), undertake an economic appraisal of the proposal, comparing it..
Engineers at the General Electric turbine division are trying to improve an existing adiabatic steam turbine that receives 100 kg/s superheated steam at 10 MPa and 800 oC and after expansion and producing power,
A w14X74 of A992 Steel has a length of 20 feet and fixed ends. Compute the design compressive strength for LRFD and the allowable compressive strength for ASD.
A fireman reduces the exit area on a nozzle so that the velocity inside the hose is quite small relative to the exiting velocity. What is the maximum exiting velocity and what is the maximum height
A gas stream with a particulate loading of 20.0g/m^3 is passed through a 70%-efficient cyclone followed by a 95%-efficient ESP. Calculate the overall efficiency of the system.
A pool of benzene is ignited on the floor of a large industrial building. The total area covered by the Kerosene pool is 6 meters square (Note that this is considered a large pool D>0.2 meters). Combustion efficiency is 70%. Estimate the plume mas..
Find the second-law efficiency for the compressed air system in Problem 8.65. Consider the total system from the inlet to the final point of use.
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