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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 turbine
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 °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..
What is the composition, in weight percent and atom percent, of an alloy that contains 105.0 kg iron, 20.3 kg of aluminium, and 2.0 kg of copper?
An insulated piston-cylinder assembly containing a fluid has a stirring device operated externally. The piston is frictionless, and the force holding it against the fluid is due to standard atmospheric pressure and a coil spring. The spring constant ..
the light right-angle boom which supports the 400-kg cylinder is supported by three cables and a ball-and-socket joint
the service life of a battery used in a cardiac pacemaker is assumed to be normally distributed. a random sample of 10
a u-tube manometer is connected to a gas pipe. the level of the liquid in the manometer arm open to the atmosphere is
steel is coated with thin layer pf ceramic to help protect against corrosion. what do you expect to happen to the
a rocket moving in space far from all other objects has a speed of 2.5 103 ms relative to the earth. its engines are
two flows of h2o one of which is saturated vapor at .6 mpa and the other of which is at .6 mpa 600 deg c mix
design an outside storage facility for methane gas ch4. 110 kg is the maximum mass of methane to be stored at this
a spool of mass m radius r and radius of gyration kg rolls without slipping on an incline whose angle with respect to
a particle travels along the circular path x2 y2 r2. if the y component of the particles velocity is vy 2r cos 2t
a rigid tank whose volume is 0.5 m3 initially containing ammonia at 20oc 1.5 bar is connected by a valve to a large
3600 lbmhr of air flows through an ideal converging-diverging nozzle. the air enters at a pressure fo 160 psia and a
two possible routes for a power line are under study. data on the routes are as followsaround the lake under the
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