Mechanical Engineering Exam > Mechanical Engineering Questions > Consider the following measures:1. Increasing...
Start Learning for Free
Consider the following measures:
1. Increasing the compression ratio
2. Increasing the intake air temperature.
3. Increasing the length to diameter ratio of the cylinder.
4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldinclude
1. Increasing the compression ratio
2. Increasing the intake air temperature.
3. Increasing the length to diameter ratio of the cylinder.
4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldinclude
- a)1, 2 and 3
- b)1, 2 and 4
- c)1, 3 and 4
- d)2, 3 and 4
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Consider the following measures:1. Increasing the compression ratio2. ...
Ans. (a)
Most Upvoted Answer
Consider the following measures:1. Increasing the compression ratio2. ...
Increasing the compression ratio:
- Increasing the compression ratio in a compression-ignition (CI) engine can help reduce the tendency to knock.
- This is because a higher compression ratio leads to higher cylinder pressures, which can promote better combustion and reduce the likelihood of knocking.
- The increased compression ratio allows for more efficient combustion, resulting in better fuel economy and reduced emissions.
Increasing the intake air temperature:
- Increasing the intake air temperature can also help reduce knock in CI engines.
- A higher intake air temperature leads to a higher charge temperature, which helps to promote better combustion.
- The increased charge temperature ensures that the fuel-air mixture ignites more readily and reduces the chances of knocking.
Increasing the length to diameter ratio of the cylinder:
- Increasing the length to diameter ratio of the cylinder can also contribute to reducing the tendency to knock in CI engines.
- A higher length to diameter ratio allows for a larger combustion chamber volume, which helps to reduce the peak pressures and temperatures during combustion.
- This reduces the likelihood of knocking as the combustion process becomes more controlled.
Increasing the engine speed:
- Increasing the engine speed can also help reduce knock in CI engines.
- At higher engine speeds, the combustion process becomes faster and more complete.
- This reduces the chances of incomplete combustion and subsequent knocking.
Conclusion:
- Combining all the above measures - increasing the compression ratio, increasing the intake air temperature, and increasing the length to diameter ratio of the cylinder - will help reduce the tendency to knock in CI engines.
- These measures improve combustion efficiency, reduce peak pressures and temperatures, and promote better combustion.
- Increasing the engine speed also contributes to reducing knock by enhancing the combustion process.
- Therefore, the correct answer is option 'A' - measures 1, 2, and 3 are necessary to reduce the tendency to knock in CI engines.
- Increasing the compression ratio in a compression-ignition (CI) engine can help reduce the tendency to knock.
- This is because a higher compression ratio leads to higher cylinder pressures, which can promote better combustion and reduce the likelihood of knocking.
- The increased compression ratio allows for more efficient combustion, resulting in better fuel economy and reduced emissions.
Increasing the intake air temperature:
- Increasing the intake air temperature can also help reduce knock in CI engines.
- A higher intake air temperature leads to a higher charge temperature, which helps to promote better combustion.
- The increased charge temperature ensures that the fuel-air mixture ignites more readily and reduces the chances of knocking.
Increasing the length to diameter ratio of the cylinder:
- Increasing the length to diameter ratio of the cylinder can also contribute to reducing the tendency to knock in CI engines.
- A higher length to diameter ratio allows for a larger combustion chamber volume, which helps to reduce the peak pressures and temperatures during combustion.
- This reduces the likelihood of knocking as the combustion process becomes more controlled.
Increasing the engine speed:
- Increasing the engine speed can also help reduce knock in CI engines.
- At higher engine speeds, the combustion process becomes faster and more complete.
- This reduces the chances of incomplete combustion and subsequent knocking.
Conclusion:
- Combining all the above measures - increasing the compression ratio, increasing the intake air temperature, and increasing the length to diameter ratio of the cylinder - will help reduce the tendency to knock in CI engines.
- These measures improve combustion efficiency, reduce peak pressures and temperatures, and promote better combustion.
- Increasing the engine speed also contributes to reducing knock by enhancing the combustion process.
- Therefore, the correct answer is option 'A' - measures 1, 2, and 3 are necessary to reduce the tendency to knock in CI engines.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
|
Explore Courses for Mechanical Engineering exam
|
|
Similar Mechanical Engineering Doubts
Top Courses for Mechanical EngineeringView all
Consider the following measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?
Question Description
Consider the following measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. 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 measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. 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 measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?.
Consider the following measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. 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 measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. 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 measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?.
Solutions for Consider the following measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of Consider the following measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider the following measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Consider the following measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Consider the following measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following measures:1. Increasing the compression ratio2. Increasing the intake air temperature.3. Increasing the length to diameter ratio of the cylinder.4. Increasing the engine speed.The measures necessary to reduce the tendency to knock in CI engines wouldincludea)1, 2 and 3b)1, 2 and 4c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
|
|
Explore Courses for Mechanical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup