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A gas within a piston-cylinder assembly undergoes a thrmodynamics cycle consisting of three processes:
Process from state 1 to state2: Compression with U2=U1.
Process from 2 to 3: constant volume cooling to p3= 140 kPa and v3= 0.028m3
Process from 3 to 1: constant pressure expansion with W31=10.5 kj.
The system is stationary, and the cyclic work Wc= -8.3kj. Now sketch the cycle on a pressure-volume diagram, determine the volume at state 1, work and heat transfer for process 1 to 2 and justify that weather this is a power cycle or refrigeration cycle.
At the exit, the pressure is 113 kPa and the temperature is 69 degrees C. Determine the mass flow rate, the exit velocity and the area of the exit.
25 mw power is produced in a well-insulated steam turbine operating at steady state. the flow rate of steam through the
Friction between the piston and cylinder wall can be neglected because the process occurs so slowly. For the air, determine the initial and final pressures in kPa and the boundary work for the process in kJ.
consider a model of a bone with a cemented prosthesis where the outside radius of the bone is ro the radius of the
a link AC has uniform rectangular cross section 3mm thick and 25mm wide. Determine the normal stress in the central portion of that link? solution
Calculate the maximum bending stress at mid-span, and, for the same section, locate the neutral axis. Neglect the weight of the beam
You have a bevel gear and shaft and you have to find the maximum load that can be applied on it.
problem 1 air at 29.5ordmc db flows over a cooling coil and leaves it at a state of 13ordmc db and 8.5 gkg absolute
determine the designe power. An output speed of 175 RPMis specified. Determine: a) number of teeth on the small sprocket, b) number of teeth on the large sprocket, c) lubrication type required, d) the required length of chain (in inches) if the ce..
a piston-cylinder device initially contains 1.4 kg of refrigent-134a at 140 kpa and 20 degc. heat is now transferred to
A ball with a mass of 0.25 kg is thrown vertically upward with an initial velocity of 10 m/s. What is the velocity of the ball when it reaches the highest point?
a cylindrical specimen of a brass alloy 10.0 mm 0.39 in. in diameter and 120.0 mm 4.72 in. long is pulled in tension
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