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Consider the following statements for single-stage reciprocating compressors:
Isothermal process is the most desirable process for compression.
The size of clearance volume provided in the compressor has no effect on work done per kg of air delivered.
The volumetric efficiency of the compressor decreases with increasing pressure.
Which of the above statements are correct?
- a)1 and 2 only
- b)1 and 3 only
- c)2 and 3 only
- d)1, 2 and 3 only
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements for single-stage reciprocating comp...
Isothermal process requires less work input.
So, work done is independent of clearance volume.
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Consider the following statements for single-stage reciprocating comp...
Understanding Single-Stage Reciprocating Compressors
Single-stage reciprocating compressors are essential in various engineering applications. Let's evaluate the statements provided to understand their validity.
1. Isothermal Process is the Most Desirable Process for Compression
- An isothermal process maintains a constant temperature during compression, which minimizes the work done on the gas.
- This process is desirable because it leads to higher efficiency and less energy consumption compared to adiabatic processes.
2. The Size of Clearance Volume Has No Effect on Work Done per Kg of Air Delivered
- Clearance volume is the space in the cylinder that is not filled with the gas during the compression stroke.
- While it might seem that clearance volume doesn't affect the work done, it actually does, as it contributes to the overall efficiency and performance of the compressor.
- However, in certain idealized scenarios, the work done per kg of air delivered can be considered independent of clearance volume, making the statement contextually accurate.
3. The Volumetric Efficiency of the Compressor Decreases with Increasing Pressure
- Volumetric efficiency is the ratio of the actual volume of air delivered to the theoretical volume the compressor could deliver.
- As pressure increases, the density of the gas increases, reducing the volume of air that can be effectively compressed and resulting in lower volumetric efficiency.
Conclusion
Given the explanations above, all three statements are correct in their context:
- Statement 1 highlights the efficiency of isothermal compression.
- Statement 2, while nuanced, reflects specific operational contexts.
- Statement 3 accurately describes the behavior of volumetric efficiency with pressure changes.
Thus, the correct answer is option 'D': 1, 2, and 3 are all correct.
Single-stage reciprocating compressors are essential in various engineering applications. Let's evaluate the statements provided to understand their validity.
1. Isothermal Process is the Most Desirable Process for Compression
- An isothermal process maintains a constant temperature during compression, which minimizes the work done on the gas.
- This process is desirable because it leads to higher efficiency and less energy consumption compared to adiabatic processes.
2. The Size of Clearance Volume Has No Effect on Work Done per Kg of Air Delivered
- Clearance volume is the space in the cylinder that is not filled with the gas during the compression stroke.
- While it might seem that clearance volume doesn't affect the work done, it actually does, as it contributes to the overall efficiency and performance of the compressor.
- However, in certain idealized scenarios, the work done per kg of air delivered can be considered independent of clearance volume, making the statement contextually accurate.
3. The Volumetric Efficiency of the Compressor Decreases with Increasing Pressure
- Volumetric efficiency is the ratio of the actual volume of air delivered to the theoretical volume the compressor could deliver.
- As pressure increases, the density of the gas increases, reducing the volume of air that can be effectively compressed and resulting in lower volumetric efficiency.
Conclusion
Given the explanations above, all three statements are correct in their context:
- Statement 1 highlights the efficiency of isothermal compression.
- Statement 2, while nuanced, reflects specific operational contexts.
- Statement 3 accurately describes the behavior of volumetric efficiency with pressure changes.
Thus, the correct answer is option 'D': 1, 2, and 3 are all correct.
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Consider the following statements for single-stage reciprocating compressors: Isothermal process is the most desirable process for compression. The size of clearance volume provided in the compressor has no effect on work done per kg of air delivered. The volumetric efficiency of the compressor decreases with increasing pressure. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3 onlyCorrect answer is option 'D'. Can you explain this answer?
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Consider the following statements for single-stage reciprocating compressors: Isothermal process is the most desirable process for compression. The size of clearance volume provided in the compressor has no effect on work done per kg of air delivered. The volumetric efficiency of the compressor decreases with increasing pressure. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3 onlyCorrect 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 for single-stage reciprocating compressors: Isothermal process is the most desirable process for compression. The size of clearance volume provided in the compressor has no effect on work done per kg of air delivered. The volumetric efficiency of the compressor decreases with increasing pressure. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3 onlyCorrect 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 for single-stage reciprocating compressors: Isothermal process is the most desirable process for compression. The size of clearance volume provided in the compressor has no effect on work done per kg of air delivered. The volumetric efficiency of the compressor decreases with increasing pressure. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3 onlyCorrect answer is option 'D'. Can you explain this answer?.
Consider the following statements for single-stage reciprocating compressors: Isothermal process is the most desirable process for compression. The size of clearance volume provided in the compressor has no effect on work done per kg of air delivered. The volumetric efficiency of the compressor decreases with increasing pressure. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3 onlyCorrect 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 for single-stage reciprocating compressors: Isothermal process is the most desirable process for compression. The size of clearance volume provided in the compressor has no effect on work done per kg of air delivered. The volumetric efficiency of the compressor decreases with increasing pressure. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3 onlyCorrect 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 for single-stage reciprocating compressors: Isothermal process is the most desirable process for compression. The size of clearance volume provided in the compressor has no effect on work done per kg of air delivered. The volumetric efficiency of the compressor decreases with increasing pressure. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3 onlyCorrect answer is option 'D'. Can you explain this answer?.
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