Engineering, 05.09.2019 05:30 keykey5349
Engineering controls are the physical changes that employers make to the work environment or to equipment that make it safer to use.
a) true b) false
Answers: 2
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, 04.07.2019 18:10
Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery
Answers: 2
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Engineering, 04.07.2019 18:20
Asimple rankine cycle uses water as the working fluid. the water enters the turbine at 10 mpa and 480c while the condenser operates at 6 kpa. if the turbine has an isentropic efficiency of 80 percent while the pump has an isentropic efficiency of 70 percent determine the thermal efficiency
Answers: 1
Engineering controls are the physical changes that employers make to the work environment or to equi...
Mathematics, 22.10.2019 17:50
Mathematics, 22.10.2019 17:50
Mathematics, 22.10.2019 17:50
Computers and Technology, 22.10.2019 17:50
Mathematics, 22.10.2019 17:50
Mathematics, 22.10.2019 17:50
Mathematics, 22.10.2019 17:50
Mathematics, 22.10.2019 17:50
Mathematics, 22.10.2019 17:50