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Consider the following statements:
In down draft carburettor, a hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This helps to
1. Improve evaporation of liquid fuel
2. Provide higher thermal efficiency
3. Reduce fuel consumption
4. Lower the exhaust gas temperature
Which of these statements are correct?
In down draft carburettor, a hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This helps to
1. Improve evaporation of liquid fuel
2. Provide higher thermal efficiency
3. Reduce fuel consumption
4. Lower the exhaust gas temperature
Which of these statements are correct?
- a)1, 2 and 4
- b)1, 2 and 3
- c)1, 3 and 4
- d)2, 3 and 4
Correct answer is option 'A'. Can you explain this answer?
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Consider the following statements:In down draft carburettor, a hot spo...
Ans. (a)
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Consider the following statements:In down draft carburettor, a hot spo...
Explanation:
In a down draft carburettor, the hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This hot spot plays a significant role in improving the carburetion process and overall engine performance. Let's analyze the given statements to see which ones are correct.
1. Improve evaporation of liquid fuel:
The hot spot in the down draft carburettor aids in improving the evaporation of liquid fuel. As the liquid fuel enters the carburettor, it comes into contact with the hot surface of the bottom wall. This heat transfer increases the rate of fuel evaporation, ensuring better atomization and mixing with the incoming air. This, in turn, leads to more efficient combustion and improved engine performance.
2. Provide higher thermal efficiency:
The hot spot in the down draft carburettor does not directly contribute to higher thermal efficiency. Thermal efficiency is primarily dependent on factors such as compression ratio, combustion chamber design, ignition timing, and fuel quality. While the hot spot can indirectly influence thermal efficiency by improving fuel evaporation and combustion, it is not the sole factor responsible for higher thermal efficiency. Therefore, this statement is incorrect.
3. Reduce fuel consumption:
The hot spot in the down draft carburettor aids in improving fuel vaporization and combustion, resulting in better fuel efficiency. When the liquid fuel is effectively vaporized and mixed with the incoming air, it leads to more complete combustion, reducing fuel wastage and improving fuel consumption. Therefore, this statement is correct.
4. Lower the exhaust gas temperature:
The hot spot in the down draft carburettor can help lower the exhaust gas temperature. When the fuel is properly vaporized and mixed, it leads to more complete combustion. This complete combustion reduces the amount of unburnt fuel and partially burnt fuel in the exhaust gases, resulting in lower exhaust gas temperature. Therefore, this statement is correct.
Conclusion:
Based on the analysis of the given statements, the correct statements are:
1. Improve evaporation of liquid fuel
2. Provide higher thermal efficiency (incorrect)
3. Reduce fuel consumption
4. Lower the exhaust gas temperature
Hence, the correct answer is option A) 1, 2, and 4.
In a down draft carburettor, the hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This hot spot plays a significant role in improving the carburetion process and overall engine performance. Let's analyze the given statements to see which ones are correct.
1. Improve evaporation of liquid fuel:
The hot spot in the down draft carburettor aids in improving the evaporation of liquid fuel. As the liquid fuel enters the carburettor, it comes into contact with the hot surface of the bottom wall. This heat transfer increases the rate of fuel evaporation, ensuring better atomization and mixing with the incoming air. This, in turn, leads to more efficient combustion and improved engine performance.
2. Provide higher thermal efficiency:
The hot spot in the down draft carburettor does not directly contribute to higher thermal efficiency. Thermal efficiency is primarily dependent on factors such as compression ratio, combustion chamber design, ignition timing, and fuel quality. While the hot spot can indirectly influence thermal efficiency by improving fuel evaporation and combustion, it is not the sole factor responsible for higher thermal efficiency. Therefore, this statement is incorrect.
3. Reduce fuel consumption:
The hot spot in the down draft carburettor aids in improving fuel vaporization and combustion, resulting in better fuel efficiency. When the liquid fuel is effectively vaporized and mixed with the incoming air, it leads to more complete combustion, reducing fuel wastage and improving fuel consumption. Therefore, this statement is correct.
4. Lower the exhaust gas temperature:
The hot spot in the down draft carburettor can help lower the exhaust gas temperature. When the fuel is properly vaporized and mixed, it leads to more complete combustion. This complete combustion reduces the amount of unburnt fuel and partially burnt fuel in the exhaust gases, resulting in lower exhaust gas temperature. Therefore, this statement is correct.
Conclusion:
Based on the analysis of the given statements, the correct statements are:
1. Improve evaporation of liquid fuel
2. Provide higher thermal efficiency (incorrect)
3. Reduce fuel consumption
4. Lower the exhaust gas temperature
Hence, the correct answer is option A) 1, 2, and 4.
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Consider the following statements:In down draft carburettor, a hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This helps to1. Improve evaporation of liquid fuel2. Provide higher thermal efficiency3. Reduce fuel consumption4. Lower the exhaust gas temperatureWhich of these statements are correct?a)1, 2 and 4b)1, 2 and 3c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?
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Consider the following statements:In down draft carburettor, a hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This helps to1. Improve evaporation of liquid fuel2. Provide higher thermal efficiency3. Reduce fuel consumption4. Lower the exhaust gas temperatureWhich of these statements are correct?a)1, 2 and 4b)1, 2 and 3c)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 statements:In down draft carburettor, a hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This helps to1. Improve evaporation of liquid fuel2. Provide higher thermal efficiency3. Reduce fuel consumption4. Lower the exhaust gas temperatureWhich of these statements are correct?a)1, 2 and 4b)1, 2 and 3c)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 statements:In down draft carburettor, a hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This helps to1. Improve evaporation of liquid fuel2. Provide higher thermal efficiency3. Reduce fuel consumption4. Lower the exhaust gas temperatureWhich of these statements are correct?a)1, 2 and 4b)1, 2 and 3c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?.
Consider the following statements:In down draft carburettor, a hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This helps to1. Improve evaporation of liquid fuel2. Provide higher thermal efficiency3. Reduce fuel consumption4. Lower the exhaust gas temperatureWhich of these statements are correct?a)1, 2 and 4b)1, 2 and 3c)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 statements:In down draft carburettor, a hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This helps to1. Improve evaporation of liquid fuel2. Provide higher thermal efficiency3. Reduce fuel consumption4. Lower the exhaust gas temperatureWhich of these statements are correct?a)1, 2 and 4b)1, 2 and 3c)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 statements:In down draft carburettor, a hot spot is formed at the bottom wall which is common for intake and exhaust manifolds. This helps to1. Improve evaporation of liquid fuel2. Provide higher thermal efficiency3. Reduce fuel consumption4. Lower the exhaust gas temperatureWhich of these statements are correct?a)1, 2 and 4b)1, 2 and 3c)1, 3 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?.
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