13. 2 kg of air at 5 bar, 80°C expands adiabatically in a closed system until its volume is doubled and its temperature becomes equal to that of the surroundings which is at 1 bar, 5°C. For this process, determine : (i) The maximum work ; (i) The change in availability; (iii) The irreversibility. For air take : e, = 0.718 kJ/kg K, u = c,T, where e, is constant and pV = mRT, where p is in bar, V volume in m', m mass in kg, R is constant equal to 0.287 kJ/kg K, and T temperature in K. (Ans. (i) 122.72 kJ ; (i) 82.2 kJ ; (iii) 15.2 kJ]

13. 2 kg of air at 5 bar, 80°C expands adiabatically in a closed system until its volume is doubled and its temperature becomes equal to that of the surroundings which is at 1 bar, 5°C. For this process, determine : (i) The maximum work ; (i) The change in availability; (iii) The irreversibility. For air take : e, = 0.718 kJ/kg K, u = c,T, where e, is constant and pV = mRT, where p is in bar, V volume in m', m mass in kg, R is constant equal to 0.287 kJ/kg K, and T temperature in K. (Ans. (i) 122.72 kJ ; (i) 82.2 kJ ; (iii) 15.2 kJ]

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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