Engineering, 14.09.2019 01:30 UncleE123
In a steady flow system, the working fluid flows at a rate of 300kg/min. it enters the system with a pressure of 500kn/m2 , a velocity of 200m/s, internal energy of 2.2mj/kg and a specific volume of 0.42m3 /kg. it exits the system with a pressure of 120kn/m2 , a velocity of 140m/s, internal energy of 1.5mj/kg and a specific volume of 1.5m3 /kg. during its passage through the system the fluid losses 40kj/kg to the surroundings. find: i) the necessary diameters of the inlet and outlet pipes. (12 marks) ii) work done on or by the system. iii) the power developed by the system.
Answers: 3
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 03.07.2019 15:10
If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.
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Engineering, 04.07.2019 18:10
Fluids at rest possess no flow energy. a)- true b)- false
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Engineering, 04.07.2019 18:20
Steam enters a converging nozzle at 3.0 mpa and 500°c with a at 1.8 mpa. for a nozzle exit area of 32 cm2, determine the exit velocity, mass flow rate, and exit mach number if the nozzle: negligible velocity, and it exits (a) is isentropic (b) has an efficiency of 94 percent
Answers: 2
In a steady flow system, the working fluid flows at a rate of 300kg/min. it enters the system with a...
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