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A 4-ft-long, 1-in.-diameter shaft rotates inside an equally long cylinder that is 1.02 in. in diameter. Calculate the torque required to rotate the inner shaft at 2000 rpm if SAE-30 oil at 70°F fills the gap. Also, calculate the horsepower required. Assume concentric cylinders.
a distillation column as shown in the figure to the right is a device used to separate components with different
air in a piston-cylinder assembly and modeled as an ideal gas undergoes two internally reversible processes in series
a piston-cylinder device contains 1 kg of h2o. the water is at 800oc and a pressure of 20 mpa. heat transfer occurs
A simply-supported beam of span L is discretized into 7 nodes (Node 1 at the left-hand pin support, Node 7 at the right-hand pin support and the other nodes spaced equally at L/6). obtain an expression for the mid-span deflection if point loads of ..
a lidar laser radar gun is an alternative to the standard radar gun that uses the doppler effect to catch speeders. a
you are working in a company that has developed a process to produce dna vaccines from e.coli. after the fermentation
a common aluminum alloy al-2024 contains 4.4 wt. copper 1.5 wt. magnesium and 0.6 wt. manganese. the balance is
Repeat Problem 3-67 with the inside of the tube exposed to a convection condition with h=40 W/m2 · ?C. Check with an analytical calculation
a cold-storage room is maintained at -18degc. the internal dimensions of the room are 5 m x 5 m x 3 m high. each wall
If the ventilation requirement of a 2.7-m-high, 200-m2 residence is tobe met entirely by a fan, determine the flow capacity in L/min of thefan that needs to be installed. Also determine the diameter of the duct if the air velocity is not to exceed ..
A Closed, Rigid tank contains a two-phase liquid-vapor mixture of Refrigerant 22 initially at -20oC with a quality of 50.36%. Energy Transfer by heat into the tank occurs until the refrigerant is at a final pressure of 6 bars. Determine the final tem..
kic for the aluminum alloy used in making a structure is 45mpam0.5. if the structure contains a crack 2.5mm long what
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