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Two tanks contain steam, and they are both connected to a piston/cylinder. Initially the piston is at the bottom and the mass of the piston is such that a pressure of 1.4 MPa below it will be able to lift it. Steam in A is 4 kg at 7 MPa, 700?C and B has 2 kg at 3 MPa, 350?C. The two valves are opened, and the water comes to a uniform state. Find the final temperature and the total entropy generation, assuming no heat transfer.
Decorative water fountains consist of a water reservoir and underground piping to and from a pump. One such system is shown schematically in the figure. The pipe material is PVC (a table is provided). The outlet line from the pump is 18 m and the inl..
A certain metal alloy has body centered cubic crystal structure; it has an average atomic weight of 71.2 amu; and the metal has an average atomic radius of 0.131 nm. Determine the theoretical density of this metal in grams per cubic centimetre.
A rectangular gate is used as a retaining wall for seawater as shown in the figure. The gate is hinge at point O 1 m from the bottom. Determine the depth of seawater required for the resultant force to be located at the hinge. The gate width into the..
an air conditioning system is to be filled from a rigid container. the container initially contains 4 kg of saturated
A 4 20 mA signal is sent to a 12-bit Modicon PLC input card, which in turn, sends this to a SCADA. If the signal happens to be 14.25 mA, calculate: What percentage of 0 - 100% will this represent?
the density of atmospheric air is about 1.15 kgm3which we assume is constant. how large an absolute pressure will
Your company is considering creating an alumina coating by immersing an Fe-Si alloy into an Al melt, withdrawing the coated Fe-Si, and then oxidizing the Al coated alloy at 1000°C in air to form an alumina coating.
A well-insulated rigid tank contains 1 kg of air at 30°C. A paddle wheel rotates inside the tank and increases the temperature of the air to 60°C. If the environment is at 100 kPa and 25°C, determine the exergy destroyed and the minimum work input fo..
How fast does water flow from a hole at the bottom of a very wide, 4.6-m-deep storage tank filled with water? Ignore viscosity.
Methane gas in a piston-cylinder assembly goes under an adiabatic (no heat transfer) quasi- equilibrium compression. (This process is called isentropic process). The pressure and volume of the gas during the process are related as PV 1.3=constant.
A combined vapor power cycle consists of two ideal Rankine cycles with cesium and steam as the working fluids. In the caesium cycle, saturated vapor caesium enters the turbine at100 psia, and saturated liquid exits the condenser at 740ºF. Relevant pr..
Find expression for the isothermal compressibility and coefficient of thermal expansion for a fluid that is described by the van der waals equation of state. Expression should be in term of measurable properties.
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