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Air enters the first stage of an axial flow compressor at a stagnation temperature of 20°C and at a stagnation pressure of 1.05 bar and leaves the compressor at a stagnation pressure of 11 bar. The total-to-total efficiency of the compressor is 83%. Determine, the exit stagnation temperature of the air and the poly tropic efficiency of the compressor. Assume for air that γ = 1:4.
wind is blowing on a 55-gallon drum. estimate the wind speed needed to tip the drum over. work in si units. the mass of
Some alloys use a combination of strain hardening and precipitation hardening to achieve particularly high strength levels. The usual order of strengthening is solution treatment,quenching, cold working, and finally precipitation heat treatment. Why ..
the input to a 12-bit ad converter is vin asin2 omega t 2acos2 omega t and its f 20 khz. find the sampling time
a heat pump with refrigerant 134a is used maintain a house at 25 degc by absorbing heat from a geothermal water source
an automobile can accelerate at the rate of 1.5ms2 and can decelerate at 7ms2. if driver never exceeds the speed limit
Determine the maximum velocity leaving the nozzles and the maximum absolute Mach number in the stage;
Consider the 2.0micrometer long GaAs device where the E-field is 5kV/cm and Mn*=.067M0. Calculate the transit time of an electron through the device if the mobility is 8000 cm^2V-s.
an electric heater in the form of a horizontal disk of 57 mm diameter is used to heat the bottom of a tank filled with
a) What is the temperature and state of the steam in the pipe? b) What is the quality of the steam in the pipe?
Electric power is to be generated by installing a hydraulic turbine-generator at a site 120m below the free surface of a large water reservoir that can supply water at a rate of 1500 kg/s steadily. Determine the power generation potential.
the temperatures on the faces of a plane wall 15 cm thick are 375 and 85 degrees celsius. the wall is constructed of a
a utility plant runs an ideal rankine cycle with water. the boiler pressure is 3.0 mpa and the cycle has a high
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