Mechanical Engineering Exam > Mechanical Engineering Questions > Consider the following statements:Exhaust emi...
Start Learning for Free
Consider the following statements:
Exhaust emissions of carbon monoxide from spark ignition engine is
1. mainly fuel-air mixture strength dependent
2. in the range of zero to 10%
3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis
4. controlled by the use of a two way catalytic convertor
Which of the statements given above are correct?
Exhaust emissions of carbon monoxide from spark ignition engine is
1. mainly fuel-air mixture strength dependent
2. in the range of zero to 10%
3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis
4. controlled by the use of a two way catalytic convertor
Which of the statements given above are correct?
- a)1 and 4
- b)2 and 3
- c)1 and 3
- d)1, 2, 3 and 4
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Consider the following statements:Exhaust emissions of carbon monoxide...
Ans. (d)
Most Upvoted Answer
Consider the following statements:Exhaust emissions of carbon monoxide...
Statement 1: Exhaust emissions of carbon monoxide from spark ignition engine is mainly fuel-air mixture strength dependent.
This statement is correct. The fuel-air mixture strength in a spark ignition engine plays a crucial role in the formation of carbon monoxide (CO) emissions. The fuel-air mixture can be either rich or lean. In a rich mixture, there is an excess of fuel compared to the amount of air, leading to incomplete combustion and higher production of CO. In a lean mixture, there is an excess of air compared to the amount of fuel, resulting in complete combustion and lower production of CO. Therefore, the fuel-air mixture strength directly affects the amount of CO emissions from a spark ignition engine.
Statement 2: Exhaust emissions of carbon monoxide from spark ignition engine is in the range of zero to 10%.
This statement is incorrect. The range of CO emissions from a spark ignition engine can vary significantly depending on various factors such as engine design, operating conditions, and emission control systems. While modern spark ignition engines with advanced emission control technologies can achieve very low levels of CO emissions (close to zero), older engines or poorly maintained engines may produce higher levels of CO. Therefore, the range of CO emissions is not limited to zero to 10%, and it can be higher or lower depending on the specific circumstances.
Statement 3: Exhaust emissions of carbon monoxide from spark ignition engine is measured with the help of an instrument working on the principle of non-dispersive infrared analysis.
This statement is correct. Non-dispersive infrared (NDIR) analysis is a commonly used method for measuring CO emissions from combustion sources, including spark ignition engines. NDIR analyzers utilize the principle that CO absorbs infrared radiation at specific wavelengths. The instrument emits infrared radiation through a sample gas cell containing the exhaust gases, and the amount of absorbed radiation is measured. This measurement is then used to determine the concentration of CO in the exhaust emissions.
Statement 4: Exhaust emissions of carbon monoxide from spark ignition engine is controlled by the use of a two-way catalytic converter.
This statement is correct. Two-way catalytic converters are commonly used in spark ignition engines to control CO emissions. The catalytic converter contains a catalyst (usually made of platinum and palladium) that promotes the oxidation of CO to carbon dioxide (CO2) and water (H2O). The CO in the exhaust gases reacts with oxygen (O2) over the catalyst, resulting in the conversion of CO into CO2. This catalytic conversion process helps in reducing the CO emissions from the engine exhaust.
Conclusion: Therefore, the correct statements are 1, 3, and 4. Statement 2 is incorrect as the range of CO emissions can vary and is not limited to zero to 10%.
This statement is correct. The fuel-air mixture strength in a spark ignition engine plays a crucial role in the formation of carbon monoxide (CO) emissions. The fuel-air mixture can be either rich or lean. In a rich mixture, there is an excess of fuel compared to the amount of air, leading to incomplete combustion and higher production of CO. In a lean mixture, there is an excess of air compared to the amount of fuel, resulting in complete combustion and lower production of CO. Therefore, the fuel-air mixture strength directly affects the amount of CO emissions from a spark ignition engine.
Statement 2: Exhaust emissions of carbon monoxide from spark ignition engine is in the range of zero to 10%.
This statement is incorrect. The range of CO emissions from a spark ignition engine can vary significantly depending on various factors such as engine design, operating conditions, and emission control systems. While modern spark ignition engines with advanced emission control technologies can achieve very low levels of CO emissions (close to zero), older engines or poorly maintained engines may produce higher levels of CO. Therefore, the range of CO emissions is not limited to zero to 10%, and it can be higher or lower depending on the specific circumstances.
Statement 3: Exhaust emissions of carbon monoxide from spark ignition engine is measured with the help of an instrument working on the principle of non-dispersive infrared analysis.
This statement is correct. Non-dispersive infrared (NDIR) analysis is a commonly used method for measuring CO emissions from combustion sources, including spark ignition engines. NDIR analyzers utilize the principle that CO absorbs infrared radiation at specific wavelengths. The instrument emits infrared radiation through a sample gas cell containing the exhaust gases, and the amount of absorbed radiation is measured. This measurement is then used to determine the concentration of CO in the exhaust emissions.
Statement 4: Exhaust emissions of carbon monoxide from spark ignition engine is controlled by the use of a two-way catalytic converter.
This statement is correct. Two-way catalytic converters are commonly used in spark ignition engines to control CO emissions. The catalytic converter contains a catalyst (usually made of platinum and palladium) that promotes the oxidation of CO to carbon dioxide (CO2) and water (H2O). The CO in the exhaust gases reacts with oxygen (O2) over the catalyst, resulting in the conversion of CO into CO2. This catalytic conversion process helps in reducing the CO emissions from the engine exhaust.
Conclusion: Therefore, the correct statements are 1, 3, and 4. Statement 2 is incorrect as the range of CO emissions can vary and is not limited to zero to 10%.
Free Test
| FREE | Start Free Test |
Community Answer
Consider the following statements:Exhaust emissions of carbon monoxide...
D
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 statements:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer?
Question Description
Consider the following statements:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 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:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 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:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer?.
Consider the following statements:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 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:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 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:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer?.
Solutions for Consider the following statements:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 and 4Correct answer is option 'D'. 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 statements:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider the following statements:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Consider the following statements:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Consider the following statements:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following statements:Exhaust emissions of carbon monoxide from spark ignition engine is1. mainly fuel-air mixture strength dependent2. in the range of zero to 10%3. measured with the help of an instrument working on the principle of nondispersiveinfra-red analysis4. controlled by the use of a two way catalytic convertorWhich of the statements given above are correct?a)1 and 4b)2 and 3c)1 and 3d)1, 2, 3 and 4Correct answer is option 'D'. 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