Forces and Failures in Bearings and Shafts Quiz
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Questions and Answers

What is the purpose of attaching another mass to the opposite side of a rotating shaft?

  • To produce vibrations in the shaft
  • To bend the shaft
  • To minimize pressure on the main bearings (correct)
  • To increase the centrifugal force

    • What is the process of providing a second mass in order to counteract the effect of the centrifugal force of the first mass called?

  • Inertia compensation
  • Centrifugal modification
  • Balancing of rotating masses (correct)
  • Radial acceleration

    • What is the purpose of balancing rotating masses?

  • To eliminate entirely the effect of centrifugal force
  • To reduce unbalance to an acceptable level (correct)
  • To produce vibrations in the machinery
  • To increase centrifugal force

    • What force acts radially outwards on the axis of rotation and is known as centrifugal force?

    <p>Centripetal force</p> Signup and view all the answers

    What is the purpose of attaching another mass to the opposite side of a rotating shaft?

    <p>To decrease the centrifugal force</p> Signup and view all the answers

    Which case is important for balancing of different masses rotating in the same plane?

    <p>Balancing of different masses rotating in different planes</p> Signup and view all the answers

    What problem can arise if the spokes on a wheel cannot be adjusted to center the rim?

    <p>Dynamic vibration</p> Signup and view all the answers

    What is the alternative method for providing dynamic balance if the spokes on a wheel cannot be adjusted?

    <p>Adding weights to the opposite side of the rim</p> Signup and view all the answers

    What is the primary reason for balancing rotating systems?

    <p>To eliminate vibrations and system failure</p> Signup and view all the answers

    In what scenarios should the balance of a rotating system be highly considered?

    <p>When the mass is high and the rotating speed is low</p> Signup and view all the answers

    What can happen if a shaft with unbalanced masses is subjected to excessive forces?

    <p>It may experience bending and fatigue failure</p> Signup and view all the answers

    Why is it important to design machine parts wisely in relation to balance?

    <p>To reduce unbalance to a minimum possible level or eliminate it completely</p> Signup and view all the answers

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