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The exergy of an isolated system in a process
- a)can never increase
- b)can never decrease
- c)always remains constant
- d)is always positive
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The exergy of an isolated system in a processa)can never increaseb)can...
Exergy of an Isolated System in a Process:
Exergy is defined as the maximum useful work that can be obtained from a system when it is brought into equilibrium with a reference environment. It is a measure of the quality of energy, and it reflects the availability of energy to do useful work. The exergy of an isolated system in a process can never increase because of the second law of thermodynamics.
Second Law of Thermodynamics:
The second law of thermodynamics states that the total entropy of an isolated system always increases over time, or remains constant in ideal cases where the system is in a state of equilibrium. Entropy is a measure of the disorder or randomness of a system, and it increases as energy is converted from one form to another. When energy is converted from a higher quality form to a lower quality form, the exergy decreases.
Exergy Destruction:
Exergy destruction is a measure of the irreversibility of a process, and it is defined as the difference between the initial exergy of a system and the final exergy of the system after the process. Exergy destruction occurs when energy is converted from a higher quality form to a lower quality form, such as from mechanical energy to thermal energy. This irreversibility is due to the increase in entropy during the process.
Conclusion:
In conclusion, exergy is a measure of the quality of energy, and it reflects the availability of energy to do useful work. The exergy of an isolated system in a process can never increase because of the second law of thermodynamics. Exergy destruction is a measure of the irreversibility of a process, and it occurs when energy is converted from a higher quality form to a lower quality form.
Exergy is defined as the maximum useful work that can be obtained from a system when it is brought into equilibrium with a reference environment. It is a measure of the quality of energy, and it reflects the availability of energy to do useful work. The exergy of an isolated system in a process can never increase because of the second law of thermodynamics.
Second Law of Thermodynamics:
The second law of thermodynamics states that the total entropy of an isolated system always increases over time, or remains constant in ideal cases where the system is in a state of equilibrium. Entropy is a measure of the disorder or randomness of a system, and it increases as energy is converted from one form to another. When energy is converted from a higher quality form to a lower quality form, the exergy decreases.
Exergy Destruction:
Exergy destruction is a measure of the irreversibility of a process, and it is defined as the difference between the initial exergy of a system and the final exergy of the system after the process. Exergy destruction occurs when energy is converted from a higher quality form to a lower quality form, such as from mechanical energy to thermal energy. This irreversibility is due to the increase in entropy during the process.
Conclusion:
In conclusion, exergy is a measure of the quality of energy, and it reflects the availability of energy to do useful work. The exergy of an isolated system in a process can never increase because of the second law of thermodynamics. Exergy destruction is a measure of the irreversibility of a process, and it occurs when energy is converted from a higher quality form to a lower quality form.
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The exergy of an isolated system in a processa)can never increaseb)can never decreasec)always remains constantd)is always positiveCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about The exergy of an isolated system in a processa)can never increaseb)can never decreasec)always remains constantd)is always positiveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The exergy of an isolated system in a processa)can never increaseb)can never decreasec)always remains constantd)is always positiveCorrect answer is option 'A'. Can you explain this answer?.
The exergy of an isolated system in a processa)can never increaseb)can never decreasec)always remains constantd)is always positiveCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about The exergy of an isolated system in a processa)can never increaseb)can never decreasec)always remains constantd)is always positiveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The exergy of an isolated system in a processa)can never increaseb)can never decreasec)always remains constantd)is always positiveCorrect answer is option 'A'. Can you explain this answer?.
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