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Consider the following statements:
Artefacts to prevent harmful effects resulting from vibrations of an unbalanced machine fixed on its foundation include
mounting the machine on springs thereby minimizing the transmission of forces
  • using vibration isolating materials to prevent or reduce the transmission of forces
  • moving the foundation so as to have only one degree of freedom towards reducing the transmission of forces.
    Which of the above statements are correct?
    • a)
      1 and 2 only
    • b)
      1 and 3 only
    • c)
      2 and 3 only
    • d)
      1, 2 and 3
    Correct answer is option 'D'. Can you explain this answer?
    Most Upvoted Answer
    Consider the following statements:Artefacts to prevent harmful effect...
    Spring and damper are used between machine and ground/foundation. Appropriate choice of spring and damper characteristics will enable the displacement transmissibility/amplification factor to be below one.
    As k increases ωn increases and q decreases, amplitude (A) value decreases.
    As rotating unbalance has two components along x and y directions, by constraining along one direction, forces can be reduced.
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    Community Answer
    Consider the following statements:Artefacts to prevent harmful effect...
    Correct Answer: Option D - 1, 2 and 3

    Explanation:
    The given statements are as follows:

    1. Mounting the machine on springs, thereby minimizing the transmission of forces.
    2. Using vibration isolating materials to prevent or reduce the transmission of forces.
    3. Moving the foundation so as to have only one degree of freedom towards reducing the transmission of forces.

    Let's discuss each statement in detail:

    1. Mounting the machine on springs:
    When a machine is mounted on springs, it creates a flexible connection between the machine and its foundation. This helps in minimizing the transmission of forces and vibrations from the machine to the foundation. The springs act as a shock absorber and dampen the vibrations, thereby preventing harmful effects. This statement is correct.

    2. Using vibration isolating materials:
    Vibration isolating materials are specifically designed to absorb and dampen vibrations. These materials are placed between the machine and its foundation to prevent or reduce the transmission of forces and vibrations. They act as a barrier and minimize the impact of vibrations on the foundation. This statement is also correct.

    3. Moving the foundation to have only one degree of freedom:
    When the foundation is moved in such a way that it has only one degree of freedom, it means that it is constrained in all other directions except one. By doing so, the transmission of forces and vibrations from the machine to the foundation is reduced. The foundation is designed to absorb and dissipate the forces and vibrations in the most efficient manner. This statement is also correct.

    Therefore, all the given statements (1, 2, and 3) are correct. Hence, the correct answer is option D.
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    Consider the following statements:Artefacts to prevent harmful effects resulting from vibrations of an unbalanced machine fixed on its foundation include mounting the machine on springs thereby minimizing the transmission of forces using vibration isolating materials to prevent or reduce the transmission of forces moving the foundation so as to have only one degree of freedom towards reducing the transmission of forces. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?
    Question Description
    Consider the following statements:Artefacts to prevent harmful effects resulting from vibrations of an unbalanced machine fixed on its foundation include mounting the machine on springs thereby minimizing the transmission of forces using vibration isolating materials to prevent or reduce the transmission of forces moving the foundation so as to have only one degree of freedom towards reducing the transmission of forces. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. 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:Artefacts to prevent harmful effects resulting from vibrations of an unbalanced machine fixed on its foundation include mounting the machine on springs thereby minimizing the transmission of forces using vibration isolating materials to prevent or reduce the transmission of forces moving the foundation so as to have only one degree of freedom towards reducing the transmission of forces. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. 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:Artefacts to prevent harmful effects resulting from vibrations of an unbalanced machine fixed on its foundation include mounting the machine on springs thereby minimizing the transmission of forces using vibration isolating materials to prevent or reduce the transmission of forces moving the foundation so as to have only one degree of freedom towards reducing the transmission of forces. Which of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?.
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