Steam at 550 lbf/in.2, 800°F enters a turbine operating at steady state and exits at 1 lbf/in.2 The turbine produces 600 hp. For the turbine, heat transfer is negligible as are kinetic and potential energy effects.
(a) Determine the quality of the steam at the turbine exit, the mass flow rate, in lb/s, and the entropy production rate, in Btu/s. oR, if the turbine operates without internal irreversibilities.
(b) Plot the mass flow rate, in lb/s, and the entropy production rate, in Btu/s. oR, for exit qualities ranging from the value calculated in part (a) to 1.
Answers: 3
Physics, 22.06.2019 00:30
What are the theoretical properties of a gas at a temperature of 0 kelvin?
Answers: 3
Physics, 22.06.2019 07:30
Some material consisting of a collection of microscopic objects is kept at a high temperature. a photon detector capable of detecting photon energies from infrared through ultraviolet observes photons emitted with energies of 0.3 ev, 0.5 ev, 0.8 ev, 2.0ev, 2.5ev, and 2.8ev. these are the only photon energies observed. (a) draw and label a possible energy-level diagram for one of the microscopic objects, which has four bound states. on the diagram, indicate the transitions corresponding to the emitted photons. explain briefly. (b) would a spring–mass model be a good model for these microscopic objects? why or why not? (c) the material is now cooled down to a very low temperature, and the photon detector stops detecting photon emissions. next, a beam of light with a continuous range of energies from infrared through ultraviolet shines on the material, and the photon detector observes the beam of light after it passes through the material. what photon energies in this beam of light are observed to be significantly reduced in intensity (“dark absorption lines”)? explain briefly.
Answers: 3
Physics, 22.06.2019 16:50
Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.
Answers: 3
Physics, 22.06.2019 22:00
Will mark brainliest! asap! ! 16) which of the clouds shown would indicate a possible future rain storm? a) b) c) d)
Answers: 1
Steam at 550 lbf/in.2, 800°F enters a turbine operating at steady state and exits at 1 lbf/in.2 The...
Mathematics, 16.12.2020 17:30
World Languages, 16.12.2020 17:30
Mathematics, 16.12.2020 17:30
Health, 16.12.2020 17:30
History, 16.12.2020 17:30
English, 16.12.2020 17:30
Mathematics, 16.12.2020 17:30
SAT, 16.12.2020 17:30
English, 16.12.2020 17:30
Mathematics, 16.12.2020 17:30
Mathematics, 16.12.2020 17:30
Mathematics, 16.12.2020 17:30