Engineering, 22.04.2021 21:50 jsph32
An axial turbine stage has an inlet temperature of 1400 K. At mid-radius, while operating at design speed and flow rate, the axial velocity ratio ca / U is 0.5, the degree of reaction is 50%, and there is no swirl in the absolute velocity leaving the rotor. The tip blade speed is 400 m/s, and the hub-to-tip radius ratio is 0.8. (a) Estimate the stagnation pressure ratio for the stage. (b) If, during off-design operation, the inlet flow conditions are unchanged but the blade speed increases 20%, show how the change i
Answers: 3
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
Engineering, 04.07.2019 18:10
Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.
Answers: 2
Engineering, 04.07.2019 18:10
For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 Β°f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater
Answers: 3
Engineering, 04.07.2019 18:10
Aturning operation is performed with following conditions: rake angle of 12Β°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.
Answers: 1
An axial turbine stage has an inlet temperature of 1400 K. At mid-radius, while operating at design...
Mathematics, 22.10.2020 07:01
History, 22.10.2020 07:01
History, 22.10.2020 07:01
Social Studies, 22.10.2020 07:01
Physics, 22.10.2020 07:01
Mathematics, 22.10.2020 07:01
Mathematics, 22.10.2020 07:01