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Air enters the turbine of a gas turbine at 1200 kPa and 1200 K, and expands to two stages. Between the stages, the air is reheated at a constant pressure of 350 kPa to 1200 K. The expansion through each turbine stage is isentropic. Determine, in kJ/kg, of air flowing;
a) The work developed by each stage.
b) Heat transfer for the reheat process.
c) The increase in net work as compared to a single stage of expansion with no reheats.
Consider a hypothetical metal that has a hexagonal close-packed crystal structure and an atomic weight of 70.28 g/mol. If the atomic radius is 0.1473 nm and the c/a ratio is 1.723, then calculate (a) the unit cell volume, and (b) the density of the m..
a frictionless piston-cylinder device contains 16 lbm of superheated water vapor at 40psia and 600 degrees fahrenheit.
a tank has two rooms separated by a membrane. room a has 1 kg air and volume 0.5 m3 room b has 0.75 m3 air with density
Consider a 70-kg woman who has a total foot imprint area of 400 cm2. She wishes to walk on the snow, but the snow cannot withstand pressures greater than 0.5 kPa. Determine the minimum size of the snow shoes needed.
a steady-flow boiler is essentially a long heated variable-area duct with liquid water entering at one end and steam
air is compressed in a car engine from 22 degc and 95 kpa in a reversible and adiabatic manner. if the compression
a u-tube manometer is connected to a gas pipe. the level of the liquid in the manometer arm open to the atmosphere is
compute the shear strength in the pins connecting rods when a load of f equals 1500lb is carried. the pins have a
a weight attached to a spring of stiffness 525 nm has a viscous damping device. when the weight is displaced and
At what location S will the combined moment of the weights of the man and platform about point B be zero?
steady-state creep rate data are given for an alloy taken at 474 k with the activation energy for creep of 140000
Calculate the theoretical power in kW to 1 DP developed by a fluid motor. The formula is: theoretical power = Volumetric Displacement * Angular Speed * pressure where the volumetric displacement = 102 cubic centimetres / revolution, the Angular Speed..
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