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a) In a polytropic process, a fluid is compressed to 2.75 times its initial pressure, whereas its temperature becomes1.65 times. What is the fluids index of expansion, n?
b) 1.2kg of Air at a pressure of 2.15MPa and a temperature of 585K, undergoes a reversible adiabatic process. Final pressure at the end of the process is 195KPa. Calculate final temperature and work done.
Air exerts a pressure of 900KPa within a 0.45 cubic meter container of fixed volume. It is cooled such that the pressure falls to 3.25bar. The temperature of the air is then measured and was found to be 285C. Determine the mass of the air, the initia..
Air enters a gas turbine with a velocity of 165m/s and a specific enthalphy of 2800KJ/kg and leaves with a velocity of 135m/s and specific enthalpy of 2175KJ/kg. The heat lost to the surrounding turbine is 32.5KJ/kg. Determine power developed by the ..
Liquid water in a pumped flow system experiences varying pressures as it circulates through the system. One concern in designing any such system is to ensure that cavitation does not occur. If the water temperature during operation of a particular sy..
Five kg of water is in a closed rigid container with a volume of 0.3935 m3 and a pressure of 5.0 MPa. Draw and label the states and process on a P-v diagram and determine the amount of heat removed and work done when the pressure is reduced to 1.5 MP..
Water as a saturated vapor at 600 Â°F is contained in a piston-cylinder device that has an initial volume of 30 ft3. The device undergoes a constant temperature process, until the water reaches the saturated liquid condition. Draw and label the state..
Nitrogen in a piston-cylinder assembly undergoes a polytropic expansion process. Initially, nitrogen is at 125 C and 144 kPa. Then it is expanded to a state of 102 kPa and 90 C. determine the heat transfer and work for the process considering no chan..
A slow leak develops in an inner tube (volume, 0.5 ft3, temperature, 600F), wherein it takes 4 hours for the pressure to decrease from 30 to 25 psig. The mass flow rate of air per second under the conditions is given by 0.68pA/(RT)0.5, where the unit..
Explain how you would expect the strength and ductility of a crystalline material to change as the ASTM Grain size number change from 14 to 3.
Evaluate the concentration of vacancies in copper at 650C temperature. What temperature will be needed to heat treat copper such that the concentration of vacancies produced will be 1000 times more than the equilibrium concentration of vacancies at s..
Air at standard temperature and pressure flows through a horizontal galvanized iron pipe at a rate of 4.0 ft3/s. The pressure drop must not exceed 0.75 psi per 100 ft of pipe (and naturally we want to design the most economic pipe). What diameter sho..
Calculating Test Mach Number, The temperature in a reservoir of a supersonic tunnel is 519 deg.R. In the test section, the flow velocity is 1385 ft/s.
the length of a cast iron pipe is to be 4200 ft. the head causing flow is to be 12.6 ft. after the pipe has been in
the design for a new cementless hip implant is to be studied using an instrumented implant amd a fixed stimulated
the landsat-c earth resources satellite has a nearly circular orbit with annbspeccentricity of 0.00132. at perigee the
sketch a diagrammatic pneumatic circuit for the control of a double acting cylinder using a 52 valve that is
the launch vehicle takes the moon orbiter to a circular orbit around the earth at 300km altitude. the orbiter is to
a piston-cylinder device initially contains 0.6 m3 of water vapor at 250 kpa. the specific volume and specific internal
water is the working fluid in an ideal vapor power cycle with reheat. superheated vapor enters the first turbine stage
a 100kg pure iron block at 27 degrees c is dropped into an insulated rigid tank that contains 0.1m3 of unused engine
a concrete sewer pipe 3 ft in dia is laid so it has a drop in elevation of 1 ft per 1000 ft of lenght. if swage assume
it takes 0.5 seconds for one to lift the cart handle from 0 to 450 in a linear way around o. if the block has a mass of
find the temperature of the combustion products of butane when burned in an adiabatic steady flow combustor at 1atm
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