Q1) One kg of air at a pressure of (1.5 bar ) is cooled at a constant volume to a pressure ( 1 bar ). It is then compressed adiabatically until it attains its initial temperature , when the pressure is found to be ( 5 bar ) . a) Draw the processes on (P-V ) diagram . b) State the type of expansion necessary to bring the air back to its Original pressure . c) If the initial temperature of the air is ( 190 °C ), determine the work done and heat transferred during the processes . [ Take, Cp = 1.0 kJ /kg .ºK , C = 0. 72 kJ / kg .ºK]

Q1) One kg of air at a pressure of (1.5 bar ) is cooled at a constant volume to a pressure ( 1 bar ). It is then compressed adiabatically until it attains its initial temperature , when the pressure is found to be ( 5 bar ) . a) Draw the processes on (P-V ) diagram . b) State the type of expansion necessary to bring the air back to its Original pressure . c) If the initial temperature of the air is ( 190 °C ), determine the work done and heat transferred during the processes . [ Take, Cp = 1.0 kJ /kg .ºK , C = 0. 72 kJ / kg .ºK]

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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