A gas in a piston-cylinder assembly. The gas undergoes an expansion process for which the relationship between pressure and volume is given by PV = constant The initial volume is 0.1 m, and the final volume is 0.2 m³. The initial pressure is 3 bar,. The change in internal energy of the gas in the process is AU = - 18.4 kJ. There are no significant changes in kinetic or potential energy. Answer the following questions : (a) What are the main assumptions. pVis = constant (b) Drive an expression of work for the polytropic process. (c) Determine the work for the process, in kJ, if n =1.5. Area = work (d) Determine the net heat transfer for the process, in kJ V.

A gas in a piston-cylinder assembly. The gas undergoes an expansion process for which the relationship between pressure and volume is given by PV = constant The initial volume is 0.1 m, and the final volume is 0.2 m³. The initial pressure is 3 bar,. The change in internal energy of the gas in the process is AU = - 18.4 kJ. There are no significant changes in kinetic or potential energy. Answer the following questions : (a) What are the main assumptions. pVis = constant (b) Drive an expression of work for the polytropic process. (c) Determine the work for the process, in kJ, if n =1.5. Area = work (d) Determine the net heat transfer for the process, in kJ V.

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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A gas in a piston-cylinder assembly. The gas undergoes an expansion process for which the
relationship between pressure and volume is given by
PVn = constant
The initial volume is 0.1 m, and the final volume is 0.2 m. The initial pressure is 3 bar,. The
change in internal energy of the gas in the process is AU = - 18.4 kJ. There are no significant
changes in kinetic or potential energy.
Answer the following questions :
(a) What are the main assumptions.
pv13 = constant
(b) Drive an expression of work for the polytropic process.
(c) Determine the work for the process, in kJ, if n =1.5.
(d) Determine the net heat transfer for the process, in kJ
2
Area = work

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