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The crank in the slider-crank mechanism shown in Fig. 12.27 rotates at a constant clockwise angular speed of 1000 rpm. Find the stresses in the connecting rod and the crank when the pressure acting on the piston is 200 psi and θ = 30° The diameter of the piston is 12 in. and the material of the mechanism is steel. Model the connecting rod and the crank by one beam element each. The lengths of the crank and connecting rod are 12 in. and 48 in., respectively
1 /2kg of a liquid-vapor water mixture in a rigid tank initially at 2 bar is heated by 120V heater for 5 minutes until it becomes a saturated vapor at 4 bar. Changes in kinetic and potential energies can be ignored.
1.what is a beam? what factors determine the maximum load that it can take without failure?2.what is a column? what
A 6-kg plastic tank that has a volume of 0.18m^3 is filled with liquid water. Assuming the density of water is 1000 kg/m^3, determine the weight of the combined system
Experiments have shown that, for airflow at T8 = 35°C and V1 = 100 m/s, the rate of heat transfer from a turbine blade of characteristic length L1 = 0.15 m and surface temperature Ts, 1 = 300°C is q1 = 1500 W.
design 2-shell pass and 8-tube pass heat exchanger for heating ethyl alcohol from 25degc to 70degc at a rate of 2.9
a rigid vessel contains 10 kg of steam. the steam is initially at 10 bar and 300 c. after a period of time the pressure
A radiator surface on a spacecraft is sized to deliver 1000 W heat load to deep space where the sink temperature is assumed to be 10 K. the radiator surface is 10 m x 1 m and has a solar abosrptance of 0.2 and an emissivity of 0.8. Determine the surf..
a fibrous filter bed is to be designed with a solid fraction equal to 0.1 fiber diameter equal to 10m and filter
Compute the total volume V displaced by the chamber - The submersible diving chamber has a total mass of 6.7 Mg including personnel, equipment, and ballast.
Determine the minimum power input required for this air-conditioning system.
a high school project involves building a model ultralight airplane. some of the stu- dents propose making an airfoil
A closed system undergoes a process in which work is done on the system and the heat transfer Q occurs only at temperature Tb. For each case, determine whether the entropy change of the system is positive, negative, zero, or indeterminate.
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