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Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.
Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.
- a)Both A and R are individually true and R is the correct explanation of A
- b)Both A and R are individually true but R is not the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Assertion (A): In case of friction clutches, uniform wear theory shoul...
Uniform pressure theory is applicable only when the clutches are new i.e., the assumption involved is that axial force W is uniformly distributed. Moreover torque transmitted in uniform pressure is more hence for safety in design uniform wear theory is used.
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Assertion (A): In case of friction clutches, uniform wear theory shoul...
Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.
Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.
Explanation:
To understand the assertion and reason given in the statement, let's discuss the concepts of uniform wear theory and uniform pressure theory in relation to friction clutches.
Uniform Wear Theory:
The uniform wear theory states that the wear on the friction surfaces of a clutch is uniform across the entire contact area. In other words, the pressure distribution on the friction surfaces is not uniform, and the wear is evenly distributed. This theory assumes that the frictional force is directly proportional to the normal force acting on the clutch surfaces.
Uniform Pressure Theory:
The uniform pressure theory assumes that the pressure distribution on the friction surfaces is uniform. This means that the frictional force is constant across the entire contact area. In this theory, the friction torque is determined by multiplying the frictional force by the effective radius of the clutch.
Comparison:
Now, let's compare the two theories in terms of power transmission calculation for friction clutches.
- The uniform pressure theory assumes a constant frictional force across the contact area, which results in a higher friction torque. This theory does not consider the non-uniform wear on the friction surfaces.
- On the other hand, the uniform wear theory takes into account the non-uniform wear on the friction surfaces. It considers that the frictional force is directly proportional to the normal force, which results in a more accurate calculation of the friction torque.
Conclusion:
Based on the above comparison, we can conclude that the uniform wear theory should be considered for power transmission calculation in case of friction clutches. The uniform pressure theory gives a higher friction torque but does not consider the non-uniform wear on the friction surfaces. Therefore, both the assertion and reason are individually true, but the reason is not the correct explanation of the assertion.
Answer:
Option (B) Both A and R are individually true but R is not the correct explanation of A.
Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.
Explanation:
To understand the assertion and reason given in the statement, let's discuss the concepts of uniform wear theory and uniform pressure theory in relation to friction clutches.
Uniform Wear Theory:
The uniform wear theory states that the wear on the friction surfaces of a clutch is uniform across the entire contact area. In other words, the pressure distribution on the friction surfaces is not uniform, and the wear is evenly distributed. This theory assumes that the frictional force is directly proportional to the normal force acting on the clutch surfaces.
Uniform Pressure Theory:
The uniform pressure theory assumes that the pressure distribution on the friction surfaces is uniform. This means that the frictional force is constant across the entire contact area. In this theory, the friction torque is determined by multiplying the frictional force by the effective radius of the clutch.
Comparison:
Now, let's compare the two theories in terms of power transmission calculation for friction clutches.
- The uniform pressure theory assumes a constant frictional force across the contact area, which results in a higher friction torque. This theory does not consider the non-uniform wear on the friction surfaces.
- On the other hand, the uniform wear theory takes into account the non-uniform wear on the friction surfaces. It considers that the frictional force is directly proportional to the normal force, which results in a more accurate calculation of the friction torque.
Conclusion:
Based on the above comparison, we can conclude that the uniform wear theory should be considered for power transmission calculation in case of friction clutches. The uniform pressure theory gives a higher friction torque but does not consider the non-uniform wear on the friction surfaces. Therefore, both the assertion and reason are individually true, but the reason is not the correct explanation of the assertion.
Answer:
Option (B) Both A and R are individually true but R is not the correct explanation of A.
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Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'B'. Can you explain this answer?
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Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'B'. 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 Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'B'. 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 Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'B'. Can you explain this answer?.
Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'B'. 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 Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'B'. 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 Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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ample number of questions to practice Assertion (A): In case of friction clutches, uniform wear theory should be considered for power transmission calculation rather than the uniform pressure theory.Reason (R): The uniform pressure theory gives a higher friction torque than the uniform wear theory.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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