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Consider the turbocharger of an internal combustion engine. The exhaust gases enter the turbine at 450 C at a rate of 0.02 kg/s and leave at 400 C. Air enters the compressor at 70 C and 95 kPa at a rate of 0.018 kg/s and leaves at 135 kPa. The mechanical efficiency between the turbine and compressor is 95 percent (5 percent of the turbine work is lost during its transmission to the compressor). Using air properties for the exhaust gases, determine (a) the air temperature at the compressor exit and (b) the isentropic efficiency of the compressor.
a 3-diameter 5-long gas-piston assembly contains air at stp. stp standard temperature and pressure conditions 300k and
a 1020 cd steel shaft is to transmit 20 hp while rotating at 1750 rpm. determine the minimum diameter for the shaft to
an actual refrigerator absorbs 500 kj of heat from a sink at 250 k and reject 660 kj of heat to environment at 300 k.
consider a steam power plant that operates on a simple ideal rankine cycle and has a net power output of 45 mw. steam
at t0 a disk with mass 3kg is placed on a spinning platform. the disk slides and begins to accelerate. if the maximum
a 50 kg cast iron block at 500 k 226.85 deg c is thrown into a large lake that is at a temp of 285 k. the iron block
a long power transmission cable is buried at a depth ground to cable centerline distance of 2 meters. the cable is
helium initially at 327 deg. c and 100 kpa is contained in a frictionless piston-cylinder. the system is slowly cooled
consider the combustion of octane c8h18 with air o2 3.76 n2i. write and balance the stochiometric equation assuming
Calculate the yield stress of the material and the force required to produce yield - determine the bulk modulus of the material.
you are watching an object that is moving in shm. when the object is displaced 0.600m to the right of its equilibrium
the structure of a house is such that it loses heat at a rate of 4825 kjh per degree celcius difference between the
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