The following particulars apply to a two-row velocity compounded impulse stage of a turbine: nozzle angle 17°; blade speed 125 m/s; exit angles of the first row moving blades, the fixed blades, and the second row moving blades, 22, 26, and 30° respectively. Take the blade velocity coefficient for cach row of blades as 0.9, and assume that the absolute velocity of the steam leaving the stage is in the axial dircction. Draw the velocity diagram for the stage and oblain: (i) the absolute velocity of the steam Icaving the stage; (ii) the dingram efficiency.
The following particulars apply to a two-row velocity compounded impulse stage of a turbine: nozzle angle 17°; blade speed 125 m/s; exit angles of the first row moving blades, the fixed blades, and the second row moving blades, 22, 26, and 30° respectively. Take the blade velocity coefficient for cach row of blades as 0.9, and assume that the absolute velocity of the steam leaving the stage is in the axial dircction. Draw the velocity diagram for the stage and oblain: (i) the absolute velocity of the steam Icaving the stage; (ii) the dingram efficiency.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Transcribed Image Text:5.4 The following particulars apply to a two-row velocity compounded impulse stage of a turbine: nozzle
angle 17°; blade speed 125 m/s; exit angles of the first row moving blades, the fixed blades, and the
sccond row moving blades, 22, 26, and 30° respectively. Take the blade velocity cocfficient for cach row
of blndes as 0.9, and assume that the absolute velocity of the steam Ieaving the stage is in the axial
dircction. Draw the velocity diagram for the stage and oblain:
(i) the absolute velocity of the steam leaving the stage;
(ii) the dingram efficiency.
(72.2 m/s; 80%)
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