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Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.
Reason (R): Regenerative heating is isentropic.
- a)Both A and R are individually true and R is the correct explanation of A
- b)Both A and R are individually true but R is not the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
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Assertion (A): In gas turbines, regenerative heating always improves t...
Understanding the Assertion and Reason
The assertion (A) states that regenerative heating in gas turbines always improves efficiency. The reason (R) claims that regenerative heating is isentropic.
Analysis of Assertion (A)
- Regenerative heating involves preheating the compressed air before it enters the combustion chamber.
- This process recovers some waste heat, thereby increasing the thermal efficiency of the gas turbine cycle.
- However, while regenerative heating generally improves efficiency, it may not always do so in every specific scenario due to design constraints and operational conditions.
Analysis of Reason (R)
- Isentropic processes are idealized processes where entropy remains constant, typically associated with reversible and adiabatic conditions.
- Regenerative heating is not inherently isentropic; it involves heat exchange, which can lead to irreversibilities.
- Therefore, while regenerative heating improves efficiency, it is not solely because it is isentropic.
Conclusion
- Since the assertion that regenerative heating always improves efficiency is true, but the reasoning provided is incorrect because regenerative heating is not isentropic, option C is the correct choice.
- The final assessment is as follows:
Correct Answer: Option C
- A is true (regenerative heating improves efficiency).
- R is false (regenerative heating is not isentropic).
The assertion (A) states that regenerative heating in gas turbines always improves efficiency. The reason (R) claims that regenerative heating is isentropic.
Analysis of Assertion (A)
- Regenerative heating involves preheating the compressed air before it enters the combustion chamber.
- This process recovers some waste heat, thereby increasing the thermal efficiency of the gas turbine cycle.
- However, while regenerative heating generally improves efficiency, it may not always do so in every specific scenario due to design constraints and operational conditions.
Analysis of Reason (R)
- Isentropic processes are idealized processes where entropy remains constant, typically associated with reversible and adiabatic conditions.
- Regenerative heating is not inherently isentropic; it involves heat exchange, which can lead to irreversibilities.
- Therefore, while regenerative heating improves efficiency, it is not solely because it is isentropic.
Conclusion
- Since the assertion that regenerative heating always improves efficiency is true, but the reasoning provided is incorrect because regenerative heating is not isentropic, option C is the correct choice.
- The final assessment is as follows:
Correct Answer: Option C
- A is true (regenerative heating improves efficiency).
- R is false (regenerative heating is not isentropic).
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Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.Reason (R): Regenerative heating is isentropic.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
Question Description
Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.Reason (R): Regenerative heating is isentropic.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. 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 Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.Reason (R): Regenerative heating is isentropic.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. 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 Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.Reason (R): Regenerative heating is isentropic.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.Reason (R): Regenerative heating is isentropic.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. 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 Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.Reason (R): Regenerative heating is isentropic.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. 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 Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.Reason (R): Regenerative heating is isentropic.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.Reason (R): Regenerative heating is isentropic.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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ample number of questions to practice Assertion (A): In gas turbines, regenerative heating always improves the efficiency unlike that in the case of reheating.Reason (R): Regenerative heating is isentropic.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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