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The main cause for the irreversibility is
- a)mechanical and fluid friction
- b)unrestricted expansion
- c)heat transfer with a finite temperature difference
- d)all of the above
Correct answer is option 'D'. Can you explain this answer?
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The main cause for the irreversibility isa)mechanical and fluid fricti...
Irreversibility in Thermodynamics
Irreversibility in thermodynamics refers to the phenomenon where a process or a system cannot be reversed to its original state with the same efficiency. The main causes for irreversibility are as follows:
Mechanical and Fluid Friction
Mechanical and fluid friction occur when there is resistance to motion or flow within a system. This resistance leads to energy losses in the form of heat, which cannot be completely recovered. Examples include friction in moving parts of machines or fluid flow through pipes.
Unrestricted Expansion
Unrestricted expansion refers to a process where a system expands freely without any external constraints. During this process, the system loses the ability to do work, leading to irreversibility. An example is the sudden release of compressed gas into a vacuum.
Heat Transfer with a Finite Temperature Difference
When heat is transferred between two bodies at different temperatures, there is always some irreversibility due to the temperature difference. This irreversibility is caused by the entropy generation in the system, leading to a decrease in overall efficiency.
Conclusion
In summary, the irreversibility in thermodynamic processes is mainly caused by mechanical and fluid friction, unrestricted expansion, and heat transfer with a finite temperature difference. These factors result in energy losses and an overall decrease in efficiency, making the process irreversible.
Irreversibility in thermodynamics refers to the phenomenon where a process or a system cannot be reversed to its original state with the same efficiency. The main causes for irreversibility are as follows:
Mechanical and Fluid Friction
Mechanical and fluid friction occur when there is resistance to motion or flow within a system. This resistance leads to energy losses in the form of heat, which cannot be completely recovered. Examples include friction in moving parts of machines or fluid flow through pipes.
Unrestricted Expansion
Unrestricted expansion refers to a process where a system expands freely without any external constraints. During this process, the system loses the ability to do work, leading to irreversibility. An example is the sudden release of compressed gas into a vacuum.
Heat Transfer with a Finite Temperature Difference
When heat is transferred between two bodies at different temperatures, there is always some irreversibility due to the temperature difference. This irreversibility is caused by the entropy generation in the system, leading to a decrease in overall efficiency.
Conclusion
In summary, the irreversibility in thermodynamic processes is mainly caused by mechanical and fluid friction, unrestricted expansion, and heat transfer with a finite temperature difference. These factors result in energy losses and an overall decrease in efficiency, making the process irreversible.
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The main cause for the irreversibility isa)mechanical and fluid frictionb)unrestricted expansionc)heat transfer with a finite temperature differenced)all of the aboveCorrect answer is option 'D'. Can you explain this answer?
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