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Consider the following statements about modification in a gas turbinepower plant working on a simple Brayton cycle:
1. Incorporation of regeneration process increases specific work outputas well as thermal efficiency.
2. Incorporation of regeneration process increases thermal efficiency butspecific work output remains unchanged.
3. Incorporation of inter cooling process in a multi-stage compressionincreases specific work output but the heat input also increases
4. Incorporation of intercooling process in a multi-stage compressionsystem increases specific work output, the heat addition remainsunchanged.Which of the above statements are correct? 
  • a)
    1 and 3
  • b)
    1 and 4
  • c)
    2 and 3
  • d)
    2 and 4
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements about modification in a gas turbinep...
The correct answer is option D: 2 and 4.

Explanation:
1. Incorporation of regeneration process increases specific work output as well as thermal efficiency.
- This statement is incorrect. The incorporation of a regeneration process in a gas turbine power plant does increase the thermal efficiency but does not necessarily increase the specific work output. Regeneration involves the recovery of heat from the turbine exhaust gases and utilizing it to preheat the compressed air before it enters the combustion chamber. This reduces the heat input required for the combustion process, thereby increasing thermal efficiency. However, the specific work output depends on various factors such as the turbine design, compressor efficiency, and operating conditions.

2. Incorporation of regeneration process increases thermal efficiency but specific work output remains unchanged.
- This statement is correct. As mentioned earlier, the regeneration process increases the thermal efficiency of a gas turbine power plant by reducing the heat input required for combustion. However, the specific work output remains unchanged unless other modifications are made to the turbine or compressor design.

3. Incorporation of intercooling process in a multi-stage compression increases specific work output but the heat input also increases.
- This statement is incorrect. The incorporation of an intercooling process in a multi-stage compression system does increase the specific work output by reducing the temperature of the compressed air between stages. This allows for a higher pressure ratio and improves the overall efficiency of the compressor. However, the heat input does not necessarily increase as a result of intercooling. The heat input is primarily determined by the combustion process, and intercooling does not directly affect it.

4. Incorporation of intercooling process in a multi-stage compression system increases specific work output, the heat addition remains unchanged.
- This statement is correct. The intercooling process in a multi-stage compression system reduces the temperature of the compressed air between stages, allowing for a higher pressure ratio and increasing the specific work output of the compressor. However, the heat addition during the combustion process remains unchanged as intercooling does not directly affect it.

In summary, statements 2 and 4 are correct regarding the modifications in a gas turbine power plant. The regeneration process increases thermal efficiency but does not necessarily increase specific work output, while the intercooling process increases specific work output without changing the heat addition.
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Consider the following statements about modification in a gas turbinep...
1and2
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Consider the following statements about modification in a gas turbinepower plant working on a simple Brayton cycle:1. Incorporation of regeneration process increases specific work outputas well as thermal efficiency.2. Incorporation of regeneration process increases thermal efficiency butspecific work output remains unchanged.3. Incorporation of inter cooling process in a multi-stage compressionincreases specific work output but the heat input also increases4. Incorporation of intercooling process in a multi-stage compressionsystem increases specific work output, the heat addition remainsunchanged.Which of the above statements are correct?a)1 and 3b)1 and 4c)2 and 3d)2 and 4Correct answer is option 'D'. Can you explain this answer?
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Consider the following statements about modification in a gas turbinepower plant working on a simple Brayton cycle:1. Incorporation of regeneration process increases specific work outputas well as thermal efficiency.2. Incorporation of regeneration process increases thermal efficiency butspecific work output remains unchanged.3. Incorporation of inter cooling process in a multi-stage compressionincreases specific work output but the heat input also increases4. Incorporation of intercooling process in a multi-stage compressionsystem increases specific work output, the heat addition remainsunchanged.Which of the above statements are correct?a)1 and 3b)1 and 4c)2 and 3d)2 and 4Correct 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 Consider the following statements about modification in a gas turbinepower plant working on a simple Brayton cycle:1. Incorporation of regeneration process increases specific work outputas well as thermal efficiency.2. Incorporation of regeneration process increases thermal efficiency butspecific work output remains unchanged.3. Incorporation of inter cooling process in a multi-stage compressionincreases specific work output but the heat input also increases4. Incorporation of intercooling process in a multi-stage compressionsystem increases specific work output, the heat addition remainsunchanged.Which of the above statements are correct?a)1 and 3b)1 and 4c)2 and 3d)2 and 4Correct 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 Consider the following statements about modification in a gas turbinepower plant working on a simple Brayton cycle:1. Incorporation of regeneration process increases specific work outputas well as thermal efficiency.2. Incorporation of regeneration process increases thermal efficiency butspecific work output remains unchanged.3. Incorporation of inter cooling process in a multi-stage compressionincreases specific work output but the heat input also increases4. Incorporation of intercooling process in a multi-stage compressionsystem increases specific work output, the heat addition remainsunchanged.Which of the above statements are correct?a)1 and 3b)1 and 4c)2 and 3d)2 and 4Correct answer is option 'D'. Can you explain this answer?.
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