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In a multistage turbine, featuring the same polytropic efficiency for all the stages, the overall polytropic efficiency: O (a) Is equal to the stage isentropic efficiency O (b) Is higher than the overall isentropic efficiency O (c) Is equal to the stage polytropic efficiency O (d) Depends on the number of stages

In a multistage turbine, featuring the same polytropic efficiency for all the stages, the overall polytropic efficiency: O (a) Is equal to the stage isentropic efficiency O (b) Is higher than the overall isentropic efficiency O (c) Is equal to the stage polytropic efficiency O (d) Depends on the number of stages

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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In a multistage turbine, featuring the same polytropic efficiency for all the stages, the overall polytropic efficiency: O (a) Is equal to the stage isentropic efficiency O (b) Is higher than the overall isentropic efficiency O (c) Is equal to the stage polytropic efficiency O (d) Depends on the number of stages
Transcribed Image Text:In a multistage turbine, featuring the same polytropic efficiency for all the stages, the overall polytropic efficiency: O (a) Is equal to the stage isentropic efficiency O (b) Is higher than the overall isentropic efficiency O (c) Is equal to the stage polytropic efficiency O (d) Depends on the number of stages
Consider a turbocompressor with beta"-90°. For a given rotating speed, which of the following statement is i 21 correct? O (a) The delivery pressure is constant p108 O (b) The internal work does not depend on the mass-flow rate O (c) None of the others O (d) The internal power is constant 108
Transcribed Image Text:Consider a turbocompressor with beta"-90°. For a given rotating speed, which of the following statement is i 21 correct? O (a) The delivery pressure is constant p108 O (b) The internal work does not depend on the mass-flow rate O (c) None of the others O (d) The internal power is constant 108
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