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5 kg of steam are initially at 310 bar and T = 750 C. The steam is isobaric ally cooled to 450 C. First, sketch the process on T -v and p - v diagrams. Then, determine Q, W, delta U, and delta H in kJ for this process using the steam tables.
a uniform rod ab of length 3m and mass 20kg is suspended with its end b against a vertical wall while its end a is
an effluent stream consists of poly-dispersed aerosol of uniform density 1.8 gcm3. the particle size distribution is
the hot gas supply to a propulsion nozzle is at a pressure of 55kpa and temperature of 800k. the ambient pressure is
The 25-kg bar has a centre of mass at G.If it is supported by a smooth peg at C,a roller at A and cord AB, determine the reactions at these supports.
The 0.6-kg mass is supported by two arms of negligible mass. The angle ? of the arms can be varied by changing the force F acting on the slid- ing collar. When ? = 70?, the assembly is rotating freely about the vertical axis with the angular velocity..
Water is to be supplied at a rate of 5000 kg/s to a hydro-electric generator located at the bottom of a lake at a height h. If the efficiency of the turbine-generator is 75% and of the generator 95%;
saturated water vapor at 200 kpa is in a constant pressure piston cylinder. at this state the piston is 0.1 m from the
assume that all electrical energy consumed by a household is generated by burning fossil fuels and that the resulting
a heat engine with a thermal efficiency of 40 receives heat from a reservoir at a temperature of 300of and rejects heat
a well-insulated tank contains 1 mole of air at 2 mpa and 673 k. it is connected via a closed valve to an insulated
a piston cylinder system containing 0.5 kg of air is compressed from a volume of 0.35 m3 to a volume of 0.1 m3. if the
The elevator E has a mass of 500kg, and the counterweight at A has a mass of 150Kg. if the motor supplies a constant force of 5KN on the cable at B, determine the speed of elevator when t= 3s, starting from rest neglect the mass of pulleys and cab..
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