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Air is compressed in a car engine from 22 °C and 95 kPa in a reversible and adiabatic manner. If the compression ratio, V1/V2 of this piston-cylinder device is 8, determine the final temperature o
Determine the total heat added to the water, the total work done and the time for the process. Sketch the 2-step process on a P-v diagram.
A 50kg lid is placed on a 20cm diameter container to form a crude pressure vessel. The initial pressure is 1 atm and the container holds water. At what temperature will the water boil?
What are the corresponding values of tensile strength, yield strength and ductility? If a ductility of 10% is required in the first case, what should the new diameter be?
If the angle of slip direction is 430 and the normal to the slip plane is 610, will the crystal yield if the applied axial force is 7500 psi? What is the yield stress of the crystal?
The cross sectional area is 0.5 cm2 and is of length 50 cm. If the Young's Modulus was observed to be 500 GPa, calculate the new area if the Poisson's ratio is 0.3.?
The mean value of the coefficient of friction is 0.25, and the actuating force is 5 kN. Find the maximum pressure and the torque capacity using the (a) uniform wear (b) uniform pressure models.
A 50 lb. weight is attached to the end of a 10 inch long beam. Determine the natural frequency both for the horizontal and vertical directions. Neglect the mass of the beam.
If the mass is displaced two inches and then released, what will be the deflection after two complete cycles of the resulting vibration?
The rocker of a crank-rocker linkage is to have a length of 500mm and swing through a total angle of 45 degrees with a time ratio of 1.25. Determine a suitable set of dimensions for r1, r2, and r3.
Convectipon coefficient is 12 btu/hrft^2R. Cylinder diameter is 4 in. Calculate heat loss per fin for a base temperature of 450 F and environment temp of 100 F.
A rigid 10m3 tank contains water initially at 120 C, with 60% liquid and 40%vapor by volume. Calculate the heat transfer to the tank.
Determine the mass flow rate of liquid water required to produce an exit state of saturated vapor at 5 bar. What is the rate of entropy generation?
Determine rate of heat transfer from the wire and if air mass flow rate over wire is 0.15 kg/s, determine air temperature gain from the haest exchange process.
Draw the temperature distributions along the heat exchanger, indicating flow direction and labeling the temperatures.
Determine the radial force of the slider a when t=0.2s. what is the transverse force on the slider at t=0.2 s. What is the resultant force due to acceleration?
The flow rate is 2 kg/s. What is the rate at which energy is transferred as heat to the pipe? Show the process on a T-s diagram.
How much throttling is necessary for this scheme to work? Compute the quality at state 1 for the measurements below, assuming the fluid is water.
How many square feet of collector would be required for a small desert power plant producing 10 kW of electric power if the electric power output is 8 percent of the collected solar energy?
The mercury emerges as a saturated liquid at 0.4 psia. Calculate the rate of the energy transfer as heat from the mercury side of the condenser?
Compute the shaft-power output and isentropic efficiency, assuming that the device is adiabatic but considering kinetic and potential energies.
An adiabatic piston-cylinder system contains a 1000-W immersion heater and 4kg of H2O initially at 1 atm and 96 percent quality.
If a balloon is filled with Helium until the diameter is (30.0cm) and the pressure is (1.20 atm), how many balloons can be filled by the tank?
Determine rate of heat transfer from the wire and if air mass flow rate over wire is 0.15 kg/s, determine air temperature gain from the heat exchange process.
Find: a) Draw a schematic of the power cycle, b) Determine the maximum thermal efficiency that could be expected for this power cycle.