Engineering, 19.07.2019 21:20 ajaymatthew15
Air at s00kpa, 980k enters a turbine operating at steady state and exits at 200kpa, 680k. heat transfer from turbine occurs at an average temperature of 320k at the rate of 40kl per kg of air flowing. kinetic and potential energy effects are negligible. for air as an ideal gas with cp-1.05kl/kgk and r-0.287kj/kgk, determine a) the rate of power developed in kj per kg air flowing and b) the rate of entropy production within the turbine in ki/k per kg of air flowing.
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 18:10
Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way
Answers: 2
Engineering, 04.07.2019 18:10
Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1
Answers: 1
Engineering, 04.07.2019 18:10
Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.
Answers: 1
Air at s00kpa, 980k enters a turbine operating at steady state and exits at 200kpa, 680k. heat trans...
Mathematics, 05.02.2021 22:50
Mathematics, 05.02.2021 22:50
Biology, 05.02.2021 22:50
Mathematics, 05.02.2021 22:50
Mathematics, 05.02.2021 22:50
Mathematics, 05.02.2021 22:50
Chemistry, 05.02.2021 22:50
History, 05.02.2021 22:50
Arts, 05.02.2021 22:50
History, 05.02.2021 22:50
English, 05.02.2021 22:50