Determine the amount of work required to compressed 1.5 kg of air at a pressure of 7 barg. The isentropic index is 1.2 and the air intake is at 1 bar, 20C & RH =65%.i) Find the temperature at the end of the compression.ii) Represent the above process on a p‐v diagram.iii) If the isentropic efficiency is 65%, find the indicated or real work.iv) Find the shaft work needed if the mechanical efficiency is 75%.

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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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Determine the amount of work required to compressed 1.5 kg of air at a pressure of 7 barg. The isentropic index is 1.2 and the air intake is at 1 bar, 20C & RH =65%.

i) Find the temperature at the end of the compression.
ii) Represent the above process on a p‐v diagram.
iii) If the isentropic efficiency is 65%, find the indicated or real work.
iv) Find the shaft work needed if the mechanical efficiency is 75%.

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