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Air enters a compressor operating at steady state at 17oC, 1 bar and exits at a pressure of 5 bars. If there are no internal irreversibilities, evaluate the work and heat transfer, each in kJ/kg of air flowing for the following cases: (a) isothermal compression, (b) polytropic process with n=1.3, and (c) adiabatic compression. Sketch the processes on p-v and t-s diagrams (place all three processes on the same plots).
the 50-lb package starts from rest slides down the smooth ramp and is stopped by the spring. the coefficient of static
the following figure shows the schematic diagram of a vapor compression refrigeration system using r-134a as the
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the 50 kg wheel is a solid circular disk which rolls on the horizontal plane in a circle of 600mm radius. the wheel
a 300 ib force acts on the bracket as shown in the figure below. find the moment it produces about point a using scalar
What is a beam? What factors determine the maximum load that it can take without failure?
The maximum flow past a circular cylinder is 2 X the Up stream velocity. The max velocity occurs at the center line of the top of the cylinder.
a sketch three-dimensional views of the unit cell of a b.c.c. crystal showing a 100 plane a 110 plane a 111 plane and a
a 825 mw electric power plant 36.2 efficient uses a coal with the following composition c 74.8 wt h 5.2 wt o 7.3
1. steam is supplied dry saturated at 40 bar to a turbine and the condenser pressure is 0.035 bar. if the plant
the pistoncylinder contains 0.1 kg r-410a at 600 kpa 60oc. it is now cooled so the volume is reduced to half of the
determine the cycle efficiency of steam power plant working under the following data boiler pressure 80 bar condenser
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