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Air at 1175 K, 8 bar enters a turbine operating at steady state and expands adiabatically to 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 of air flowing, and (b) the temperature at the exit, in K. Ignore kinetic and potential energy effects.
a new high- temperautre alloy is to be used for a 3-mm diameter tensile support member for an impact-sensistive
two identical cylinders c1 and c2 each of radius r and weight p are tied together by a cord. they support a third
Calculate the force required in direct extrusion of 1100-O aluminum from a diameter of 6 in. to 2 in. Assume that the redundant work is 30% of the ideal work of deformation, and the friction work is 25% of the total work of deformation.
a passive solar house requires an average heating power of 8.4 kw in the winter. it stores energy in 10 tonnes 10000kg
a smoke stream from a smoke generating tube is often used as a simple method of flow visualization in wind tunnels.
a stream of methanol vapor is used to chill a countercurrently flowing saturated steam in an adiabatic heat exchanger.
the compound beam is fixed at a and supported by a rocker at b and c. there are hinges pins at d and e. take f 14kn.
block c starts from rest and moves downward with a constant acceleration. knowing that after 5 s the velocity of block a relative to block d is 8 ft/s, determine a) the acceleration of the block c. b) the acceleration of portion e of the cable.
the system is released from rest with the cable taut. neglect the small mass and friction of the pulley and calculate
a mass of 100 slug is towed by 2 ropes one rope pulls with a force of 200 lbf at 30 degrees to the left of the centar
determine the thermal efficiency and the required steam flow rate kgs for a reheat-regenerative steam power plant which
a gas is contained in a vertical cylinder fitted with a piston. atmospheric pressure outside is 1 bar and the piston
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