Helium at 660 K expands in a turbine to 369 K during which 84 kJ/kg of heat was lost to the surroundings which are at 27 oC. The pressure across the turbine was 6.0, What is the isentropic efficiency "%"? Helium at 660 K expands in aturbine to 369 K during which 84kJ/kg of heat was lost to thesurroundings which are at 27 °C.Thepressure across the turbinewas 6.0, What is the isentropicefficiency "%"?Select one:A. 76.25%B. 86.17%C. 81.38%D. 78.64%E. 87.25% X

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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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Helium at 660 K expands in a turbine to 369 K during which 84 kJ/kg of heat was lost to the surroundings which are at 27 oC. The pressure across the turbine was 6.0, What is the isentropic efficiency "%"?

Helium at 660 K expands in a
turbine to 369 K during which 84
kJ/kg of heat was lost to the
surroundings which are at 27 °C.
The
pressure across the turbine
was 6.0, What is the isentropic
efficiency "%"?
Select one:
A. 76.25%
B. 86.17%
C. 81.38%
D. 78.64%
E. 87.25% X

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