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A piston-cylinder device contains steam that undergoes a reversible thermodynamic cycle. Initially the steam is at 400 kPa and 350C with a volume of 0.3 m^3. The steam is first expanded isothermally to 150 kPa, then compressed adiabatically to the initial pressure, and finally compressed at the constant pressure to the initial state. Determine the net work and heat transfer for the cycle after you calculate the work and heat interaction for each process.
a mini motor bike for children is powered by 4 hp single cylinder gasoline engine governed to run at a maximum of 1850
The supporting beam for a maintenance access platform strip spans 7 m and is to be simply supported at 1 m from each end as sketched in Figure 1. Assume that the beam could be subject to a distributed load of 2 kN/m and one point load of 6 kN.
a reversible carnot power cycle operates between reservoirs th and tl. to increase the thermal efficiency of the cycle
carbon dioxide gas enters a pipe at 3 mpa and 500 k at a rate of 2 kgs. the gas is cooled at constant pressure as it
question a 80 g frisbee is thrown from a point 0.71 m above the ground with a speed of 10 ms. when it has reached a
A rubber-tired scraper with an efficiency of 50 min/hr has a heaped capacity of 20 cu yd. If it is to move material with a swell factor of 25%, what amount of in-bank material can it move in 1 hr, assuming it has a total cycle time of 5 min?
Determining Feasibility, At steady state, a new power cycle is claimed by its inventor to develop 6 horsepower for a heat addition rate of 400 Btu/min
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a gas turbine has two stages of ideal compression expansion intercooling and reheating. air enters the first compressor
in all but a very few vehicles today crush or crumple zones are employed as a method to reduce energy transfer to the
1 air at the inlet of a nozzle is at 500 kpa 42.2oc and a velocity of 87 ms. the nozzle exit pressure is at 132 kpa.
a spring is initially compressed from a free length of 8in to a length of 6in making a net initial compression of 2in.
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