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A pressurized cylindrical tank with flat ends is loaded by torques T and tensile forces P (see figure). The tank has radius r= 50 mm and wall thickness t = 3 mm. The internal pressure p = 3.5 MPa and the torque T= 450 N·m.What is the maximum permissible value of the forces P if the allowable tensile stress in the wall of the cylinder is 72 MPa?
The thermal conductivity of compacted snow is 0.15 W/m · K. The temperature of the ice cap on which the igloo sits is -20°C and has the same thermal conductivity as the compacted snow.
Calcium Silicate has replaced asbestos as the preferred insulation for steam lines in power plants. Consider a 40 cm O.D., 4 cm wall thickness steel steam line insulated with a 12 cm thickness of calcium silicate. The insulation is protected from dam..
a first-order system with a time constant equal to 10 ms is subjected to a sinusoidal forcing with an input amplitude
Stearn enters a turbine with negligible velocity, at 4 MPa, 600°C and a flow rate of 36.000 kg/h. It leaves the turbine at 15 kPa with a velocity of 300m/s and a quality of 0.5. Determine the heat loss or gain for the steam as it passes through th..
a piston-cylinder assembly contains carbon monoxide modeled as an ideal gas with constant specific heat ratio k 1.4.
calculate the static thrust of the turbojet engine having mass flow 88lbmsec the ratio of air and fuel mass flowing
A pump operating at steady state receives saturated liquid water at 508C with a mass flow rate of 20 kg/s. The pressure of the water at the pump exit is 1 MPa. If the pump operates with negligible internal irreversibilities and negligible changes ..
measuring a velocity gradient at the surface of a 100 ft2 plate to be 0.5362 sec-1 i assume that this is a typo so i
How much would it cost to deliver one kilo Watt-hour? How does this compare with the cost of energy from your local electric utility at $0.10 per kilo Watt-hour?
in a certain industrial dryer 4 kgh of water is to be removed from a moist material. the drying is accomplished by
a square-shaped board 1 m 1 m with weight of 16 n slides down a 30 o - inclined ramp with a terminal velocity of 22.5
consider a piston-cylinder assembly containing 0.14 kg of air initially at a pressure of 350 kpa. heat is added during
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