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A piston/cylinder arrangement is filled with helium gas. The gas is compressed with a polytropic process (with n=k). The initial condition is 200 kPa, 200 K. The final pressure is 1.4 MPa. Determine the work and the heat transfer for the process (both in kJ/kg), assuming ideal gas behavior.
an engineer is designing a hydraulic lift with a capacity of 10 tons. the moving parts of this lift weigh 1000lbf. the
Refrigerant R-134a vapor in a piston-cylinder assembly undergoes a constant-pressure process from saturated vapor at 800 kPa to 50 ºC.
the horizontal motion of the plunger and shaft is arrested by the resistance of the attached disk which moves through
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.
consider the supersonic flow over a flat plate at an angle of attack. as stated the flow direction downstream of the
carbon dioxide co2 modelled as an ideal gas flows through the compressor and heat exchangernbspshown in figure. the
air is contained in a vertical cylinder fitted with a frictionless piston and two sets of stops. the volume is 0.5m3
a unit mass of an ideal gas at temperature t undergoes a reversible isothermal process from volume v1 to volume v2
Two simple pendulums are related as follows. Pendulum A has a length LA and a bob of mass mA; pendulum B has a length LB and a bob of mass If the period of A is twice that of B, What is the relationship between LA and LB?
a drill operation is to be performed with a 16 mm twist drill the hole is blind with a depth of 50 mm.cutting speed is
consider an ideal vapor-compression refrigeration cycle. the refrigerator employs refrigerant 134a as the working fluid
water at 10degc is pumped from a lake through a pipe to an elevation of 25 m above the lake surface. the pipe is 650 m
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