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1) Water vapor at 6 MPa, 6008C enters a turbine operating at steady state and expands to 10 kPa. The mass flow rate is 2 kg/s, and the power developed is 2626 kW. Stray heat transfer and kinetic and potential energy effects are negligible. Determine (a) the isentropic turbine efficiency and (b) the rate of entropy production within the turbine, in kW/K.
2) A pump operating at steady state receives liquid water at 508C, 1.5 MPa. The pressure of the water at the pump exit is 15 MPa. The magnitude of the work required by the pump is 18 kJ per kg of water flowing. Stray heat transfer and changes in kinetic and potential energy are negligible. Determine the isentropic pump efficiency.
can the flow field given by v 1x2 i - 2 x 1y j represents a steady and incompressible two dimensional flow?a if yes
if p150kn determine the elastic elongation of rod bc and the decrease in its diameter. rod bc is made of a-36 steel and
a cylinder fitted with a piston is filled with 600 lb of saturated liquid ammonia at 45degf. the piston weighs 1 ton
helium initially at 327 deg. c and 100 kpa is contained in a frictionless piston-cylinder. the system is slowly cooled
The wheel of a crane lift is rolling on a flat rail. The radius of the wheel is 4 in, the contact length and force are 2.5 in and 1 ton respectively, and E = 30 MPa and ν = 0.3 for both parts. Determine (a) the maximum contact pressure, (b) the wi..
a stream of refrigerant-134a at 1 mpa and 12 c is mixed with another stream at 1 mpa and 60 c. if the mass flow rate of
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showing the two upward pulls of the rings on his hands, each of size 380N. Calculate the angle between the wires supporting the rings and the vertical.
a gear train is to have a speed reduction of 6001. the gears used can have no fewer than 12 teeth and no more than 96
water flows through a 60 mm diameter tube that suddenly contracts to 30 mm diameter. the pressure drop across the
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