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In which one of the following situations the entropy change will be negativea)Air expands isothermally from 6 bars to 3 barsb)Air is compressed to half the volume at constant pressurec)Heat is supplied to air at constant volume till the pressure becomes three foldsd)Air expands isentropically from 6 bars to 3 barsCorrect answer is option 'B'. 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 In which one of the following situations the entropy change will be negativea)Air expands isothermally from 6 bars to 3 barsb)Air is compressed to half the volume at constant pressurec)Heat is supplied to air at constant volume till the pressure becomes three foldsd)Air expands isentropically from 6 bars to 3 barsCorrect answer is option 'B'. 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 In which one of the following situations the entropy change will be negativea)Air expands isothermally from 6 bars to 3 barsb)Air is compressed to half the volume at constant pressurec)Heat is supplied to air at constant volume till the pressure becomes three foldsd)Air expands isentropically from 6 bars to 3 barsCorrect answer is option 'B'. Can you explain this answer?.

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