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Consider the following statements concerning centrifugal governors:
1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.
2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.
3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.
2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.
3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.
Which of the statements given above is/are correct?
- a)1 and 2
- b)2 and 3
- c)2 only
- d)3 only
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements concerning centrifugal governors:1. ...
Centrifugal governors are mechanical devices used to regulate the speed of engines by controlling the amount of fuel or steam entering the system. Here are the explanations for the given statements:
1. Slope of controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.
- The controlling force curve represents the force required to move the sleeve of the governor against the centrifugal force acting on it. The slope of this curve determines the sensitivity of the governor, i.e., how quickly it responds to changes in speed.
- The centripetal force is the force acting on the sleeve due to its rotation. It increases with an increase in speed and is directly proportional to the square of the speed.
- For the governor to be stable, the controlling force should increase at a slower rate than the centripetal force. This means that the slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered.
2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.
- Isochronism is the property of a governor to maintain a constant speed with varying loads. It means that the governor will respond quickly to changes in load and bring the speed back to the set value.
- Stability, on the other hand, is the ability of the governor to maintain the desired speed without oscillations or hunting.
- It is difficult to achieve both isochronism and stability simultaneously. If the governor is designed for isochronism, it may become unstable and vice versa.
3. When the sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.
- The sleeve of the governor moves up and down depending on the speed of the engine. As the speed increases, the sleeve moves outward due to the centrifugal force and reduces the fuel supply to the engine.
- When the sleeve reaches its topmost position, it means that the engine has attained its maximum speed and the fuel supply is at its minimum.
- At this point, the engine should develop maximum power because any further increase in speed will cause the sleeve to move out of its control range and reduce the fuel supply further.
In conclusion, statements 1 and 2 are correct, while statement 3 is incorrect.
1. Slope of controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.
- The controlling force curve represents the force required to move the sleeve of the governor against the centrifugal force acting on it. The slope of this curve determines the sensitivity of the governor, i.e., how quickly it responds to changes in speed.
- The centripetal force is the force acting on the sleeve due to its rotation. It increases with an increase in speed and is directly proportional to the square of the speed.
- For the governor to be stable, the controlling force should increase at a slower rate than the centripetal force. This means that the slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered.
2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.
- Isochronism is the property of a governor to maintain a constant speed with varying loads. It means that the governor will respond quickly to changes in load and bring the speed back to the set value.
- Stability, on the other hand, is the ability of the governor to maintain the desired speed without oscillations or hunting.
- It is difficult to achieve both isochronism and stability simultaneously. If the governor is designed for isochronism, it may become unstable and vice versa.
3. When the sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.
- The sleeve of the governor moves up and down depending on the speed of the engine. As the speed increases, the sleeve moves outward due to the centrifugal force and reduces the fuel supply to the engine.
- When the sleeve reaches its topmost position, it means that the engine has attained its maximum speed and the fuel supply is at its minimum.
- At this point, the engine should develop maximum power because any further increase in speed will cause the sleeve to move out of its control range and reduce the fuel supply further.
In conclusion, statements 1 and 2 are correct, while statement 3 is incorrect.
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Consider the following statements concerning centrifugal governors:1. ...
Option C is incorrect... because when sleeve is at upper most position then speed is zero...because height of governer is measured between top and center..not from bottom and centre
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Consider the following statements concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer?
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Consider the following statements concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect 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 concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect 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 concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer?.
Consider the following statements concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect 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 concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect 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 concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Consider the following statements concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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Consider the following statements concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Consider the following statements concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Consider the following statements concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following statements concerning centrifugal governors:1. The slope of the controlling force curve should be less than that of the straight line representing the centripetal force at the speed considered for the stability of a centrifugal governor.2. Isochronism for a centrifugal governor can be achieved only at the expense of stability.3. When sleeve of a centrifugal governor reaches its topmost position, the engine should develop maximum power.Which of the statements given above is/are correct?a)1 and 2b)2 and 3c)2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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