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Consider the following statements: 
1. In a carburettor the throttle valve is used to control the fuel supply.
2. The fuel level in the float chambers is to be about 4 to 5 mm below theorifice level of main jet.
3. An idle jet provides extra fuel during sudden acceleration.
4. A choke valve restricts the air supply to make the gas richer with fuel.
Which of the statements given above are correct?
  • a)
    2 and 4
  • b)
    1 and 3
  • c)
    1, 2 and 3
  • d)
    2, 3 and 4
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Consider the following statements:1. In a carburettor the throttle val...
Ans. (a) 1 is false: In a carburetor the throttle valve is used to control the air-fuel mixture supply.
3 is false: An Idle jet provides extra-fuel during idling and low speed.
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Most Upvoted Answer
Consider the following statements:1. In a carburettor the throttle val...
Carburetor and its Components

A carburetor is a device that mixes air and fuel for an internal combustion engine. It consists of several components, including a throttle valve, float chambers, main jet, idle jet, and choke valve.

Throttle Valve

The throttle valve is used to control the amount of air entering the engine. As the valve opens, more air enters the engine, and the fuel supply increases correspondingly.

Float Chambers

Float chambers are reservoirs that hold fuel in the carburetor. The fuel level in the float chambers should be about 4 to 5 mm below the orifice level of the main jet. This ensures that the fuel supply to the engine is consistent.

Main Jet

The main jet is a small, threaded needle that controls the flow of fuel into the engine. The size of the main jet determines the amount of fuel that enters the engine.

Idle Jet

The idle jet is a small, threaded needle that provides extra fuel during sudden acceleration. This is necessary because sudden acceleration requires more fuel than the engine can draw from the main jet alone.

Choke Valve

The choke valve is used to restrict the air supply to the engine. This makes the fuel mixture richer and easier to ignite during cold starts. As the engine warms up, the choke valve gradually opens, allowing more air into the engine and reducing the fuel mixture.

Conclusion

In summary, the throttle valve controls the amount of air entering the engine, while the float chambers hold fuel and the main jet controls the flow of fuel. The idle jet provides extra fuel during sudden acceleration, and the choke valve restricts the air supply to make the fuel mixture richer during cold starts. Statement 2 and 4 are correct as they describe the fuel level in the float chambers and the function of the choke valve, respectively. Therefore, the correct answer is option A.
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Consider the following statements:1. In a carburettor the throttle valve is used to control the fuel supply.2. The fuel level in the float chambers is to be about 4 to 5 mm below theorifice level of main jet.3. An idle jet provides extra fuel during sudden acceleration.4. A choke valve restricts the air supply to make the gas richer with fuel.Which of the statements given above are correct?a)2 and 4b)1 and 3c)1, 2 and 3d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?
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Consider the following statements:1. In a carburettor the throttle valve is used to control the fuel supply.2. The fuel level in the float chambers is to be about 4 to 5 mm below theorifice level of main jet.3. An idle jet provides extra fuel during sudden acceleration.4. A choke valve restricts the air supply to make the gas richer with fuel.Which of the statements given above are correct?a)2 and 4b)1 and 3c)1, 2 and 3d)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:1. In a carburettor the throttle valve is used to control the fuel supply.2. The fuel level in the float chambers is to be about 4 to 5 mm below theorifice level of main jet.3. An idle jet provides extra fuel during sudden acceleration.4. A choke valve restricts the air supply to make the gas richer with fuel.Which of the statements given above are correct?a)2 and 4b)1 and 3c)1, 2 and 3d)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:1. In a carburettor the throttle valve is used to control the fuel supply.2. The fuel level in the float chambers is to be about 4 to 5 mm below theorifice level of main jet.3. An idle jet provides extra fuel during sudden acceleration.4. A choke valve restricts the air supply to make the gas richer with fuel.Which of the statements given above are correct?a)2 and 4b)1 and 3c)1, 2 and 3d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?.
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