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A 20 MW back-pressure steam turbine receives steam at stagnation pressure of 4 MPa and stagnation temperature of 300oC, exhausting from the last stage at stagnation pressure of 0.35 MPa. The turbine isentropic efficiency is 0.884, and mechanical losses are 2% of the actual enthalpy drop. Sketch the expansion process in Mollier diagram. Determine the rate of steam flow.
team dynamic are based on a number of interpersonal and environmental factors that influence a teams behavior. what
a convergent-divergent nozzle with an exit-to-throat area ratio of 1.616 has exit and reservoir pressures equal to
Consider a 1000-W iron whose base plate is made of .5 cm thick aluminium alloy 2024-T6 (p = 2270 kg/m^3, cp= 875 J/kg*K, alpha = 7.3 x 10 ^-5 m^2/s). The base plate has a surface area of .03 m^2.
a steam engine drop-valve is closed by a spring after the operation of a trip gear. the stiffness of the spring is such
Consider the cylindrical weir of diameter 3 m and lenght 6m.if fluid on the left has specific gravity of 1.6,and on the right has a specific gravity of 0.8,find the magnitude and direction of the resultant force
a timber company wishes to increases sales of timber by supplying log cabin kits that can be assemed and used as
What will the ratio of the angle of twist be to that of the hollow shaft if the maximum shear stress in the material of 75 N / mm ^2 and what is the ratio of actual permissible shear stress?
a 150 hp diesel engine for running an emergency generator in a building ha sa compression ratio of 19 with a cutoff
a south facing wall of a building is 5 m high and 7 m wide. the wall absorbs the incident solar energy at a rate of 500
consider a piston-cylinder arrangement containing 5.057 x 10-4 kg of dry air. for an isothermal expansion process
a pressure vessel of radius 10.4 in is filled with a gas at a pressure of 525.0 psi gauge. the top of the vessel is
the elevator e has a weight of 6600lb when fully loaded and is connected as shown to a counterweight w of weight of
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