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Considering the relationship TdS = dU + pdV between the entropy (S), internal energy (U), pressure (p), temperature (T) and volume (V), which of the following statements is correct?


[2003]

  • a)
    It is applicable only for a reversible process

  • b)
    For an irreversible process, TdS > dU+ pdV

  • c)
    It is valid only for an ideal gas

  • d)
    It is equivalent to 1st law, for a reversible process

Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Considering the relationship TdS = dU + pdV between the entropy (S), i...
TdS=dU+pdV

This equation holds for for any process reversible or irreversible, undergone by a closed system, since it is a relation among properties which are independent of path.
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Considering the relationship TdS = dU + pdV between the entropy (S), internal energy (U), pressure (p), temperature (T) and volume (V), which of the following statements is correct?[2003]a)It is applicable only for a reversible processb)For an irreversible process, TdS > dU+ pdVc)It is valid only for an ideal gasd)It is equivalent to 1st law, for a reversible processCorrect answer is option 'D'. Can you explain this answer?
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Considering the relationship TdS = dU + pdV between the entropy (S), internal energy (U), pressure (p), temperature (T) and volume (V), which of the following statements is correct?[2003]a)It is applicable only for a reversible processb)For an irreversible process, TdS > dU+ pdVc)It is valid only for an ideal gasd)It is equivalent to 1st law, for a reversible processCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Considering the relationship TdS = dU + pdV between the entropy (S), internal energy (U), pressure (p), temperature (T) and volume (V), which of the following statements is correct?[2003]a)It is applicable only for a reversible processb)For an irreversible process, TdS > dU+ pdVc)It is valid only for an ideal gasd)It is equivalent to 1st law, for a reversible processCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Considering the relationship TdS = dU + pdV between the entropy (S), internal energy (U), pressure (p), temperature (T) and volume (V), which of the following statements is correct?[2003]a)It is applicable only for a reversible processb)For an irreversible process, TdS > dU+ pdVc)It is valid only for an ideal gasd)It is equivalent to 1st law, for a reversible processCorrect answer is option 'D'. Can you explain this answer?.
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