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Design a hollow steel shaft to transmit 225 kw of power at 80 rpm without exceeding a shearing stress of 60 MPa. Consider only torsion and assume that there are no stress concentrations. Make the ratio of the outside diameter to the inside diameter to be approximately 1.25
a piston cylinder device contains 0.25 kg of air initially at 1.8 mpa and 360 degc. the air is first expanded
a rigid insulated tank that is initially evacuated is connected through a valve to a supply line that carries helium at
air is compressed in a steady-flow compressor entering at 1.2 bar and 300 k and leaving at 5 bar and 500 k. operation
four vectors ab c and d are shown not to scale. vector a has magnitude 22.5 and acts at an angle of 14.9 degrees with
a fenced enclosure consists of a rectangle of length l and width 2r and a semicircle of radius r as shown in figure
for a sensible heater that provides 100000 btuhr and increases the air temperature 35 f determine the volumetric flow
a particle travels along a straight line such that in 2 s it moved from an initial position sa 0.5 m to a position sb
Estimate the number of pounds of mercury it would take to fill your bathtub. List all assumptions and calculations also determine the same, using glycerin.
a mass of 0.2 kg of saturated refrigerant-134a is contained in a piston-cylinder device at 200 kpa. initially 75 of the
Evaluate the maximum height reached by the sphere, and the distance traveled by the block.
a plane wall 7.5 cm thick generates heat internally at the rate of wm3. one side of the wall is insulated and the other
a rankine cycle is to drive an electric generator to produce 600 mw of electricity. the generator is 95 efficient.the
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