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The main cause of the irreversibility is
- a)mechanical and fluid friction
- b)unrestricted expansion
- c)heat transfer with a finite temperature difference
- d)all of the above
- e)none of the above.
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
The main cause of the irreversibility isa)mechanical and fluid frictio...
There are basically two reasons of irreversibility of a thermodynamic process.
- Involvement of dissipative effect during the process.
- Lack of thermodynamic equilibrium during the process.
Most Upvoted Answer
The main cause of the irreversibility isa)mechanical and fluid frictio...
Explanation:
Irreversibility means the process which cannot be reversed to get the original state. In thermodynamics, there are many factors that cause irreversibility. Among them, the main causes of irreversibility are as follows:
Mechanical and Fluid Friction:
When a system undergoes a change, there is always some amount of mechanical and fluid friction, which results in energy loss. This energy loss is irreversible and cannot be recovered. Hence, mechanical and fluid friction are the main causes of irreversibility in thermodynamics.
Unrestricted Expansion:
During the unrestrained expansion of a gas, some amount of work is done by the gas. However, this work cannot be completely converted into useful work since some of it is lost due to the unrestrained expansion of the gas. This loss of work is irreversible and hence unrestricted expansion is also a cause of irreversibility.
Heat Transfer with a Finite Temperature Difference:
During the process of heat transfer between two bodies having a finite temperature difference, some amount of heat is always lost to the surroundings due to the difference in temperature. This loss of heat is irreversible and hence heat transfer with a finite temperature difference is also a cause of irreversibility.
Conclusion:
From the above discussion, it is clear that all the above factors are the main causes of irreversibility in thermodynamics. Therefore, option 'D' is the correct answer.
Irreversibility means the process which cannot be reversed to get the original state. In thermodynamics, there are many factors that cause irreversibility. Among them, the main causes of irreversibility are as follows:
Mechanical and Fluid Friction:
When a system undergoes a change, there is always some amount of mechanical and fluid friction, which results in energy loss. This energy loss is irreversible and cannot be recovered. Hence, mechanical and fluid friction are the main causes of irreversibility in thermodynamics.
Unrestricted Expansion:
During the unrestrained expansion of a gas, some amount of work is done by the gas. However, this work cannot be completely converted into useful work since some of it is lost due to the unrestrained expansion of the gas. This loss of work is irreversible and hence unrestricted expansion is also a cause of irreversibility.
Heat Transfer with a Finite Temperature Difference:
During the process of heat transfer between two bodies having a finite temperature difference, some amount of heat is always lost to the surroundings due to the difference in temperature. This loss of heat is irreversible and hence heat transfer with a finite temperature difference is also a cause of irreversibility.
Conclusion:
From the above discussion, it is clear that all the above factors are the main causes of irreversibility in thermodynamics. Therefore, option 'D' is the correct answer.
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The main cause of the irreversibility isa)mechanical and fluid frictionb)unrestricted expansionc)heat transfer with a finite temperature differenced)all of the abovee)none of the above.Correct answer is option 'D'. Can you explain this answer?
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