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Consider an air-standard Otto cycle, and a modified cycle in which the isentropic compression and expansion processes are each replaced by polytropic processes with n=1.3. The compression ratio for both cycles is 10. P1 = 1 bar and T1 = 310 K, and the max temperature of the cycles is 2200 K. Find the heat transfer and work per unit mass of air in KJ/kg for each process of the two cycles, and compare the thermal efficiency of each. Assume constant specific heats at room temperature, and k=1.4.
A 200 kg crate is to be supported by the rope and pulley arrangement shown. Determine the magnitude and direction fo the force P that must be exerted on the freee end of the rope to maintain equillibrium.
for a one order narrowing of arterial vessel in cross sectional area ainaout 10 what is the outlet pressure if the
a ball of mass m is connected to a string of length l and orbiting in a vertical circle at speed v.a write an
a gas within a piston-cylinder assembly undergoes a thermodynamic cycle consisting of three processesprocess 1-2
compute load transferred from beams and girders to various columns aon each floor. determine support reactions and draw
a rocket has a nozzle which is expanded from a chamber pressure of 10 mpa to a pressure that is 23 of sea level
one kilogram of carbon dioxide is compressed from 1 mpa and 200 degrees celsius to 3 mpa in a piston cylinder devise
a rocket has an empty weight of 500lb and carries 330lb of fuel. if the fuel is burned at the rate of 1.3 lbs and
find the momentum and buoyant length scales.
a promising method of power generation involves collecting and storing solar energy in large artificial lakes a few
steam enters an insulated turbine at 100 bar 400oc. at the exit the pressure and quality are 200 kpa and 0.66
a sphere of naphthalene having a radius of 2mm is suspended in a large volume of shell air at 318 k and 1 atm. the
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