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An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95kPa and 27°C. 750kJ/kg of heat is transferred to air during the constant volume heat addition process. Taking into account the variation of specific heats with temperature (air-standard analysis), determine
i. The pressure and the temperature at the end of the heat addition processii. The net work outputiii. The thermal efficiencyiv. The mean effective pressure for the cycle
a container is supported by three cables that are attached to a ceiling as shown. determine the weight w of the
a tank has a stirrer that delivers 200 kj of work on 100 kilograms of water at 45 degrees celcus. assume all of the
The rack structure will be built 2 ft above floor level, and the clearance between the rack structure and the ceiling of the building must be at least 18 in. Determine the dimensions (height, length, and width) of the rack structure.
consider the thin-walled beam section illustrated in the figure below. the beam has a vertical load of v 500 kn acting
Using the formula to compute torque and having a torque of 4966.97, with the RPM's at 250, Would my calculation for horsepower be correct at 236.4 hp?
a steam power plant operates near a river triver27degc. and uses the river as a temperature reservoir into which it
air at 120 kpa and 260 k is compressed steadily to 575 kpa and 405 k. the mass flow rate of air through the compressor
a mass of 5 kg of saturated water vapor at 300 kpa is heated at constant pressure until the temperature reaches 200 0c.
A huge reservoir of air supplies a converging-diverging nozzle with throat and exit areas of 10 cm^2 and 25 cm^2 respectively. The reservoir pressure and temperature are 150 kPa and 20C. Determine the range of back pressure over which
a thrust reversing system is used in jet engines to provide extra braking force to slow down an aircraft after a
Steam enters a turbine operating at steady-state at 700 ºF and 600 lbf/in2 and leaves at 0.6 lbf/in2 with a quality of 90%. The turbine develops 12,000 hp
uniform beam with 2 supports has a total length l. pinned at a and roller at b. force f is applied at the center of the
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