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The outside and inside diameters of a hollow steel shaft are 150 mm and 100 mm, respectively.
Determine the maximum power that can be transmitted if the shaft rotates at 1200 r/min and has an allowable shear stress of 62 MPa.
a vessel of volume v 6 liters contains water along with its saturated vapor under a pressure of 40 atmospheric and a
Saturated moist air and condensate streams exit the dehumidifier unit at the same temperature. The moist air then passes through a heating unit, exiting at 248C, 1 bar, and 40% relative humidity. Neglecting kinetic and potential energy effects, de..
an 8-kg iron casting at 550 degc is quenched in a tank containing 0.03 m3 of liquid water initially at a temperature of
In air-conditioning systems, streams of cold and warm air are mixed to get air with the right temperature. Consider a mixing chamber into which cold air enters at 8C and 100 kPa at a rate of 0.55 m^3 /s and warm air enters at 300C and 100 kPa. The ra..
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 loss..
A water pump is required to pump 0.23ft3/sec of water at 60F at atm up to 100psi gage. of the pump has an estimated isentropic efficiency of 50%, determine the power required (HP) to drive the pump.
a mass of 2.4 kg of air at 150 kpa and 12ordmc is contained in a gas-tight frictionless piston-cylinder device. the air
The availability of drivers and the garage space limit the total vehicles to a maximum of 110. If the profit dollars per seat per month values on the big bus, minibus, and the van are $4, $3, and $2, respectively, determine the number of vehicles ..
the closed tank is pressurized at 15 psig by air as shown. the liquid is water. determine the velocity of the water
air is contained in a vertical cylinder fitted with a frictionless piston and two sets of stops. the volume is 0.5m3
A spring stiffness k= 500 n/m is mounted against a 10 kg block. if the block is subjected to a force of 1 KN determine the velocity of the block at s=0.3 m when s=0, the block is at rest and the spring is uncompressed. The coefficient of fricktion is..
What new information do the concluded results add to the body of scientific knowledge? How does this research pertain to thermodynamics?
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