Mechanical Engineering Exam > Mechanical Engineering Questions > Consider the following statements:1. Supercha...
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Consider the following statements:
1. Supercharging increases the power output of an engine.
2. Supercharging increases the brake thermal efficiency considerably.
3. Supercharging helps scavenging of cylinders.
Which of the statements given above are correct?
1. Supercharging increases the power output of an engine.
2. Supercharging increases the brake thermal efficiency considerably.
3. Supercharging helps scavenging of cylinders.
Which of the statements given above are correct?
- a)Only 1 and 2
- b)Only 2 and 3
- c)Only 1 and 3
- d)1,2 and 3
Correct answer is option 'D'. Can you explain this answer?
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Consider the following statements:1. Supercharging increases the power...
Ans. (d)
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Consider the following statements:1. Supercharging increases the power...
Supercharging in Engines
Supercharging is a process that involves increasing the intake air pressure in an internal combustion engine. This is done by forcing more air into the combustion chamber, which in turn allows more fuel to be burned and increases the power output of the engine. Let's analyze each of the given statements to determine their accuracy.
Statement 1: Supercharging increases the power output of an engine.
This statement is correct. Supercharging increases the power output of an engine by providing more air for combustion. When more air is available, more fuel can be burned, resulting in increased power. Supercharging is commonly used in high-performance engines, such as those found in sports cars and racing vehicles, to enhance their performance.
Statement 2: Supercharging increases the brake thermal efficiency considerably.
This statement is also correct. Brake thermal efficiency is a measure of how effectively an engine converts fuel energy into useful work. Supercharging improves brake thermal efficiency by increasing the air density in the combustion chamber. This allows for better combustion and reduces the heat losses, resulting in improved efficiency. However, it should be noted that supercharging alone may not considerably increase the brake thermal efficiency, as other factors such as engine design and operating conditions also play a significant role.
Statement 3: Supercharging helps scavenging of cylinders.
This statement is correct. Scavenging refers to the process of removing the exhaust gases from the combustion chamber and replacing them with fresh air-fuel mixture. Supercharging aids in scavenging by increasing the air pressure in the intake manifold. Higher air pressure helps in expelling the exhaust gases more effectively, leading to improved cylinder filling with fresh mixture. This enhances the combustion process and overall engine performance.
Conclusion
In conclusion, all three statements are correct. Supercharging increases the power output of an engine by providing more air for combustion, improves brake thermal efficiency by increasing air density and aiding in scavenging of cylinders. Supercharging is a widely used technique to enhance the performance of internal combustion engines, particularly in high-performance applications.
Supercharging is a process that involves increasing the intake air pressure in an internal combustion engine. This is done by forcing more air into the combustion chamber, which in turn allows more fuel to be burned and increases the power output of the engine. Let's analyze each of the given statements to determine their accuracy.
Statement 1: Supercharging increases the power output of an engine.
This statement is correct. Supercharging increases the power output of an engine by providing more air for combustion. When more air is available, more fuel can be burned, resulting in increased power. Supercharging is commonly used in high-performance engines, such as those found in sports cars and racing vehicles, to enhance their performance.
Statement 2: Supercharging increases the brake thermal efficiency considerably.
This statement is also correct. Brake thermal efficiency is a measure of how effectively an engine converts fuel energy into useful work. Supercharging improves brake thermal efficiency by increasing the air density in the combustion chamber. This allows for better combustion and reduces the heat losses, resulting in improved efficiency. However, it should be noted that supercharging alone may not considerably increase the brake thermal efficiency, as other factors such as engine design and operating conditions also play a significant role.
Statement 3: Supercharging helps scavenging of cylinders.
This statement is correct. Scavenging refers to the process of removing the exhaust gases from the combustion chamber and replacing them with fresh air-fuel mixture. Supercharging aids in scavenging by increasing the air pressure in the intake manifold. Higher air pressure helps in expelling the exhaust gases more effectively, leading to improved cylinder filling with fresh mixture. This enhances the combustion process and overall engine performance.
Conclusion
In conclusion, all three statements are correct. Supercharging increases the power output of an engine by providing more air for combustion, improves brake thermal efficiency by increasing air density and aiding in scavenging of cylinders. Supercharging is a widely used technique to enhance the performance of internal combustion engines, particularly in high-performance applications.
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Consider the following statements:1. Supercharging increases the power output of an engine.2. Supercharging increases the brake thermal efficiency considerably.3. Supercharging helps scavenging of cylinders.Which of the statements given above are correct?a)Only 1 and 2b)Only 2 and 3c)Only 1 and 3d)1,2 and 3Correct answer is option 'D'. Can you explain this answer?
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