Engineering, 14.11.2019 03:31 sdavenport84
An experiment to determine the convection coefficient associated with airflow over the surface of a thick steel casting involves insertion of thermocouples in the casting at distances of 10 and 20 mm from the surface along a hypothetical line normal to the surface. the steel has a thermal conductivity of 15 w/mk. if the thermocouples measure temperatures of 50 and 40oc in the steel when the air temperature is 100oc, what is the convection coefficient?
Answers: 1
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 18:20
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
Acertain flow of air (at stp) has a velocity distribution given by v i (in ft/s). if this flow is going through a 4 ft square area in the yz-plane (centered at the origin), what is the mass flow rate (in lbm/s)?
Answers: 2
Engineering, 04.07.2019 18:20
The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?
Answers: 3
An experiment to determine the convection coefficient associated with airflow over the surface of a...
Mathematics, 10.07.2019 10:10
Mathematics, 10.07.2019 10:10
Health, 10.07.2019 10:10
Mathematics, 10.07.2019 10:10
Biology, 10.07.2019 10:10
History, 10.07.2019 10:10
Mathematics, 10.07.2019 10:10
Mathematics, 10.07.2019 10:10
Mathematics, 10.07.2019 10:10
Chemistry, 10.07.2019 10:10
Mathematics, 10.07.2019 10:10