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A piston-cylinder device contains 12 kg of saturated R-134a vapor at 3.2 bar. An electric source supplies 8 A current to a resistor within the cylinder for 4 minutes and there is heat transfer of 400 kJ to the system. During these energy interactions, the pressure is maintained constant in the cylinder. The refrigerant reaches a final temperature of 70 degree C. Determine (a) The voltage of the source. (b) Show the expansion process for the R-134a on a P-v diagram. Label states, show property values, and indicate appropriate lines of constant pressure.
a tank contains fuel oil of relative density 0.75 and exerts a pressure of 12 knm2 onto the base of the tank. calculate
determine the torque that can be applied to a solid shaft of 20-mm diameter without exceeding an allowable shearing
a swimming pool is drained using a hose. the hose has 20 mm internal diameter a roughness height of 0.2 mm and is 30 m
The main advantages of ceramic math composites over polymer matrix composites is. The phenomenon of sudden failure of ceramics when subjected to a static tensile load over time is called. Give two applications of manufactured plastics
consider a container of volume 250ml that is divided into two compartments of equalnbspsize. in the left compartment
1 water at 60 of is flowing in a 6-in schedule 40 steel pipe that is 100 ft long. calculate the maximum allowable
a man dives horizontally and to the right off the end of a 220 kg boat. the boat is initially at rest and the man
Calculate the force required in direct extrusion of 1100-O aluminum from a diameter of 6 in. to 2 in. Assume that the redundant work is 30% of the ideal work of deformation, and the friction work is 25% of the total work of deformation.
a shock absorber is to be designed to limit its overshoot to 15 percent of its initial displacement when released. find
Bypass air exits at 600 m/s while combustion air exits at 1000 m/s. What is the thrust in kN of this engine?
a solar dish-stirling engine system operates between the temperature of 500c and 30c. compute the ideal stirling
a boiler is designed to convert water at 1mpa 50 degree c to a superheated vapor at 1mpa 500 degree c a determine the
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