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Assertion (A): In hydrodynamic journal bearings, the rotating journal is held in floating condition by the hydrodynamic pressure developed in the lubricant.    
Reason (R): Lubricant flows in a converging-diverging channel.    
  • 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 'A'. Can you explain this answer?
Verified Answer
Assertion (A): In hydrodynamic journal bearings, the rotating journal ...
Both A and R are true and R provides correct explanation for A 
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Most Upvoted Answer
Assertion (A): In hydrodynamic journal bearings, the rotating journal ...
Explanation:

  • Assertion (A) is true because hydrodynamic journal bearings work on the principle of hydrodynamic lubrication where the lubricant is supplied to the bearing through an inlet and the rotating journal is held in a floating condition by the hydrodynamic pressure developed in the lubricant film.

  • Reason (R) is also true because the lubricant flows in a converging-diverging channel which creates a pressure difference and generates a hydrodynamic pressure that supports the journal.

  • Therefore, both A and R are individually true.

  • Moreover, Reason (R) is the correct explanation of Assertion (A) because the converging-diverging channel helps to generate the hydrodynamic pressure that supports the journal.

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Assertion (A): In hydrodynamic journal bearings, the rotating journal is held in floating condition by the hydrodynamic pressure developed in the lubricant. Reason (R): Lubricant flows in a converging-diverging channel. 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 'A'. Can you explain this answer?
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Assertion (A): In hydrodynamic journal bearings, the rotating journal is held in floating condition by the hydrodynamic pressure developed in the lubricant. Reason (R): Lubricant flows in a converging-diverging channel. 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 '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 Assertion (A): In hydrodynamic journal bearings, the rotating journal is held in floating condition by the hydrodynamic pressure developed in the lubricant. Reason (R): Lubricant flows in a converging-diverging channel. 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 '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 Assertion (A): In hydrodynamic journal bearings, the rotating journal is held in floating condition by the hydrodynamic pressure developed in the lubricant. Reason (R): Lubricant flows in a converging-diverging channel. 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 'A'. Can you explain this answer?.
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