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Air at 1175K, 8 bar enters a turbine operating as steady state and expands adiabatically to an exit state of 1 bar. the isentropic turbine efficiency is 92%. Employing the ideal gas model with k = 1.4 for the air, determine (a) the work developed by the turbine, in kJ per kg or air folwing, and (b) the temperature at the exit, in K. Ignore kinetic and potential energy effects.
nitrogen flows without gain or loss of heat through a horizontal duct cross-section is 1-ft by 2-ft throughout at
calculate the critical crack tip radius for a ceramic material that has a flexural strength of 638 mpa an elastic
A light aircraft with a wing area of 200 ft2 has a lift coefficient of 0.4 and a drag coefficient of 0.05. the power required to maintain level flight is 66hp. determine the weight of the airplane. recall power is force in the direction of velo..
an air compressor operates at steady state with air entering at p11 bar t1 17 c and exiting at p25 bar. the air
What is the packing density
a bead a weighting 2lb slides on a quarter-circular frictionless bar bc with radius. the bead is supported by a cable
a steady flow centrifugal compressor is supplied with saturated water vapor at 15kpa and 500kg of the water is
blocks a and b weigh 25 lb and 10 lb respectively and they are both at a height 6 ft above the ground when the system
the drinking water needs of a residential hall with 20 students is to be met by a bubbler type water fountain. the
a 2.75 m3 rigid tank initially contains air at 104 kpa and 22 degrees c. the tank is connected to a supply line through
Determine the heat transport rate of energy through an animal skull where average inside surface temperature is 95 degrees farinhiet and whose out outside surface temperature is 90 F. Assume the skull is a spherical shell 7.5 inches in outside dia..
A flat bar is to be rolls but the rolls refuse to bite (the bar is not drawn into the roll gap). State at least two measures that could be taken.
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