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A compressor operating adiabatically is to compress 2.83 m^3/min of air at 29.4C and 102.7 kN/m^2 to 311.6kN/m^2. Calculate the power required if the efficiency of the compressor is 75%. Also, calculate the outlet temperature.
Calculate the magnitude of the moment about the base point O of the 600 N force and calculate and draw the shear force and bending moment diagram for the cantilever beam
For the process where q= 62.5 kj/kg and wkcs= 60 kj/kg determine the energy change if the system mass is 2 kg.
Show that Airy's stress function ? = Crθ sinθ satisfies the biharmonic equation. Also determine the stresses in polar co-ordinate system.
Determine Fourier Number, Compare two identical steel spheres, except the first has a two inch diameter while the second sphere has a four inch diameter. The larger sphere will have a Fourier number approximately
Saturated water vapor at 200oC is isothermally condensed to a saturated liquid in a piston-cylinder device. Calculate the heat transfer and the work done during this process in kJ/kg.
Hydrostatic relation, An empirical formula relating pressure and density for seawater w/ temperature held constant is
Sketch the frequency response of the system. Overlay the frequency spectrum of the excitation and as you start the system up, increasing Ω from 0 to 60 rpm, what speeds are most likely to excite large amplitude response? Why?
Refrigerant 134a leaves the evaporator as saturated vapor at 1.4bar and is heated at constant pressure to 20 degrees C before entering the compressor.
what is the reason for the change in enthalpy between the throttle valve and the evaporator in a practical refrigeration cycle that is using R12 refrigerant.
Temperature Effect on Materials (i) A hollow cylinder of aluminium 1 m long with a 40 mm outside diameter is at a temperature of 20 °C. What is the change in length and circumference of the cylinder when it is cooled to â?'25 °C
Estimate the torque required at the base of a flag pole to hold it in place in a 30mph wind. Assume the flag pole is a vertical cylinder with D=10cm and L=10m, and assume the wind drag force is uniform along the pole.
an ideal monoatomic gas is allowed to expand slowly untill its presssure is reduce to exactly half its original value. by what factor dose the volume change if the process is adiabatic.
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