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Two kg of refrigerant 134A undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 C. Determine the work for the process. Also, determine the energy transfer by heat, KE and PE can be ignored
A block of wood has a mass of 3.67 kg and a density of 600 kg/m3. It is to be loaded with lead (1.14 x 104 kg/m3) so that it will float in water with 0.900 of its volume submerged. What mass of lead is needed if the lead is attached to?
An aircraft is propelled by a reversible gas turbine engine, or turbojet. It is flying at an altitude of 30,000 ft where temperature is -20oF and pressure is 2000 psfa. The compressor has a pressurization ratio p2/p1 of 16 and the kerosene fuel in th..
a particle which moves with curvilinear motion has coordinates in meters which vary with time t in seconds according
a well-insulate compressor take in air at 80of at 14.7 psi with a volumetric flow of 1200 ft3min. the compress air
A heat pump cycle is executed with R-134a under the saturation dome between the pressure limits of 1.8 and 0.2 MPa. The maximum coefficient of performance of this heat pump is
Find the unbalanced forces and moments in the engine.
a front-wheel-drive car has mass of 680 kg 4 roadwheels of diameter 530 mm wheelbase 2.70 m length 4.22 m and width
Evaluate thermal efficiency of the cycle
A belt moves upward at velocity V, dragging a film of viscous liquid of thickness h, as in Fig. C4.2. Near the belt, the film moves upward due to no slip.
a compactor is a press that is employed to crush bulky material into a smaller volume. the system shown uses a
Air from a workspace enters the air conditioner unit at 30C dry bulb and 20C wet bulb. The air leaves the air conditioner and returns to the space at 20C dry bulb and 6.5C dew point temperature. If there is any, the condensate leaves the air conditio..
Progress in machine tool technology over the last 100 years has led to the continual redefinition of precision as shown in Figure 10-F, developed by Taniguchi. The trend here is very clear-that precision in machining continues to improve over time..
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