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Consider the following statements pertaining to volumetric efficiency:
1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.
2. Volumetirc efficiency is maximum at inlet mach number of 0.5.
3. Inlet valve mach index is related volumetric efficiency.
Which of these statements are correct
1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.
2. Volumetirc efficiency is maximum at inlet mach number of 0.5.
3. Inlet valve mach index is related volumetric efficiency.
Which of these statements are correct
- a)2 only
- b)2 and 3
- c)1, 2 and 3
- d)1 and 3
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements pertaining to volumetric efficiency:...
Explanation:
Volumetric efficiency is the ratio of the actual mass of air drawn into the engine cylinder during the induction stroke to the mass of air that would occupy the same volume as the actual air at standard atmospheric conditions. It is an important parameter that determines the engine's ability to produce power.
Let us analyze the given statements one by one:
1. The normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.
This statement is correct. SI engines generally have a higher volumetric efficiency than CI engines at full throttle because of their ability to intake air at a higher rate due to the throttle valve. In CI engines, the volumetric efficiency is limited by the air-fuel mixing process as the fuel is injected into the compressed air.
2. Volumetric efficiency is maximum at inlet mach number of 0.5.
This statement is correct. The inlet Mach number is directly proportional to the velocity of the air entering the engine. At an inlet Mach number of 0.5, the air velocity entering the engine is optimum for efficient combustion, resulting in maximum volumetric efficiency.
3. Inlet valve mach index is related to volumetric efficiency.
This statement is also correct. The inlet valve Mach index is a parameter that is used to determine the maximum velocity of air that can enter the cylinder at a particular engine speed. A higher inlet valve Mach index means that the engine can intake air at a higher rate, resulting in higher volumetric efficiency.
Therefore, the correct answer is option B (2 and 3).
Volumetric efficiency is the ratio of the actual mass of air drawn into the engine cylinder during the induction stroke to the mass of air that would occupy the same volume as the actual air at standard atmospheric conditions. It is an important parameter that determines the engine's ability to produce power.
Let us analyze the given statements one by one:
1. The normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.
This statement is correct. SI engines generally have a higher volumetric efficiency than CI engines at full throttle because of their ability to intake air at a higher rate due to the throttle valve. In CI engines, the volumetric efficiency is limited by the air-fuel mixing process as the fuel is injected into the compressed air.
2. Volumetric efficiency is maximum at inlet mach number of 0.5.
This statement is correct. The inlet Mach number is directly proportional to the velocity of the air entering the engine. At an inlet Mach number of 0.5, the air velocity entering the engine is optimum for efficient combustion, resulting in maximum volumetric efficiency.
3. Inlet valve mach index is related to volumetric efficiency.
This statement is also correct. The inlet valve Mach index is a parameter that is used to determine the maximum velocity of air that can enter the cylinder at a particular engine speed. A higher inlet valve Mach index means that the engine can intake air at a higher rate, resulting in higher volumetric efficiency.
Therefore, the correct answer is option B (2 and 3).
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Consider the following statements pertaining to volumetric efficiency:1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.2. Volumetirc efficiency is maximum at inlet mach number of 0.5.3. Inlet valve mach index is related volumetric efficiency.Which of these statements are correcta)2 onlyb)2 and 3c)1, 2 and 3d)1 and 3Correct answer is option 'B'. Can you explain this answer?
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Consider the following statements pertaining to volumetric efficiency:1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.2. Volumetirc efficiency is maximum at inlet mach number of 0.5.3. Inlet valve mach index is related volumetric efficiency.Which of these statements are correcta)2 onlyb)2 and 3c)1, 2 and 3d)1 and 3Correct 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 Consider the following statements pertaining to volumetric efficiency:1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.2. Volumetirc efficiency is maximum at inlet mach number of 0.5.3. Inlet valve mach index is related volumetric efficiency.Which of these statements are correcta)2 onlyb)2 and 3c)1, 2 and 3d)1 and 3Correct 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 Consider the following statements pertaining to volumetric efficiency:1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.2. Volumetirc efficiency is maximum at inlet mach number of 0.5.3. Inlet valve mach index is related volumetric efficiency.Which of these statements are correcta)2 onlyb)2 and 3c)1, 2 and 3d)1 and 3Correct answer is option 'B'. Can you explain this answer?.
Consider the following statements pertaining to volumetric efficiency:1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.2. Volumetirc efficiency is maximum at inlet mach number of 0.5.3. Inlet valve mach index is related volumetric efficiency.Which of these statements are correcta)2 onlyb)2 and 3c)1, 2 and 3d)1 and 3Correct 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 Consider the following statements pertaining to volumetric efficiency:1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.2. Volumetirc efficiency is maximum at inlet mach number of 0.5.3. Inlet valve mach index is related volumetric efficiency.Which of these statements are correcta)2 onlyb)2 and 3c)1, 2 and 3d)1 and 3Correct 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 Consider the following statements pertaining to volumetric efficiency:1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.2. Volumetirc efficiency is maximum at inlet mach number of 0.5.3. Inlet valve mach index is related volumetric efficiency.Which of these statements are correcta)2 onlyb)2 and 3c)1, 2 and 3d)1 and 3Correct answer is option 'B'. Can you explain this answer?.
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ample number of questions to practice Consider the following statements pertaining to volumetric efficiency:1. The. normal range of volumetric efficiency at full throttle for SI engines is more than that of CI engines.2. Volumetirc efficiency is maximum at inlet mach number of 0.5.3. Inlet valve mach index is related volumetric efficiency.Which of these statements are correcta)2 onlyb)2 and 3c)1, 2 and 3d)1 and 3Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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