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Air at 1600 K, 30 bar enters a turbine operating at steady state and expands adiabatically to the exit, where the temperature is 830 K. If the isentropic turbine efficiency is 90%, determine (a) the pressure at the exit, in bar, and (b) the work developed, in KJ per kg of air flowing. Assume ideal gas behavior for the air and ignore kinetic and potential energy effects.
Beryllium has an HCP unit cell for which the ratio of the lattice parameters c/a is 1.568. If the radius of the Be atom is 0.1143 nm, (a) determine the unit cell volume, and (b) calculate the theoretical density of Be.
five kilograms of water at saturated liquid phase fills in a piston-cylinder device at 150oc. the device is now heated
Refrigerant 134a at 700 kPa and 40oC is expanded adiabatically in a closed system to 60 kPa. Determine the work produced, in kJ/kg, and final enthalpy for an isentropic expansion efficiency of 80.
Twenty-five samples of steel beam were chosen and tested for Young's Modulus. Eight had a modulus of E = 30 x 10^6 psi. Two had a modulus of E = 29 x 10^6 psi. Fifteen had a modulus of E = 30. x 1-^6 psi.
measurements of drag force are made on a model automobile in a towing tank filled with fresh water. the model length is
Evaluate the variation of hoop stresses across the wall of the compound cylinder.
air with a dry bulb temperature of 22c and a relative humidity of 60 percent is contained in a
design 2-shell pass and 8-tube pass heat exchanger for heating ethyl alcohol from 25degc to 70degc at a rate of 2.9
two 150lb engineering students a and b intend to jump off the bridge from rest using an elastic cord bungee cord having
What is differential levelling? list the procedure for carrying out a differential levelling exercise where one point is beyond the range of the instrement . 100 word limit
A satellite is in Earth with an altitude at perigee of 550 km and an altitude at apogee of 5000 km.
a piston cyfinder system containing 0. 5kg of air is compressed from a volume of 0. 35 m3 to a volume of 0. 1 m3. if
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