Engineering, 26.11.2019 03:31 kendasinjab
Air at 1 atm and 285 k enters a 2-m-long rectangular duct with cross section 75 mmx150 mm. the duct is maintained at a constant surface temperature of 400 k, and the air mass flow rate is 0.10 kg/s. determine the heat transfer rate from the duct to the air and the air outlet temperature.
Answers: 3
Engineering, 04.07.2019 08:10
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
Answers: 1
Engineering, 04.07.2019 18:10
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
Answers: 3
Engineering, 04.07.2019 18:20
Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k
Answers: 2
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
Air at 1 atm and 285 k enters a 2-m-long rectangular duct with cross section 75 mmx150 mm. the duct...
Mathematics, 28.10.2019 04:31
Computers and Technology, 28.10.2019 04:31
History, 28.10.2019 04:31
Mathematics, 28.10.2019 04:31
Physics, 28.10.2019 04:31
Mathematics, 28.10.2019 04:31
Social Studies, 28.10.2019 04:31
Mathematics, 28.10.2019 04:31
Health, 28.10.2019 04:31
Mathematics, 28.10.2019 04:31
Social Studies, 28.10.2019 04:31
Chemistry, 28.10.2019 04:31