Test Your Understanding of Energy and Strain in Engineering
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Questions and Answers

Which one of these is the correct definition of strain energy?

  • Proof resilience per unit volume of a material
  • Energy stored in a body when strained upto the breaking of a specimen (correct)
  • Maximum strain energy which can be stored in a body
  • The product of stress, shear modulus, and volume

    • What is the critical speed of a shaft with a disc supported in between equal to?

  • The natural frequency of the system in longitudinal vibration provided the shaft is vertical
  • The natural frequency of the system in transverse vibration (correct)
  • The natural frequency of the system in longitudinal vibrations
  • The natural frequency of the system in torsional vibrations

    • If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, what happens to the energy stored in the later at the same speed?

  • It becomes one and a half times the first one
  • It becomes four times the first one (correct)
  • It becomes one fourth of the first one
  • It becomes the same as the first one

    • What is the coefficient of fluctuation of speed for an engine with a speed range between 390 and 410 rpm in a cycle of operation?

    <p>0.1</p> Signup and view all the answers

    Which one of these is the correct formula for calculating strain energy?

    <p>x τ x D3</p> Signup and view all the answers

    Which one of these is the correct formula for calculating strain energy?

    <p>x τ x D3</p> Signup and view all the answers

    What is the critical speed of a shaft with a disc supported in between equal to?

    <p>Longitudinal vibrations</p> Signup and view all the answers

    If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, what happens to the energy stored in the later at the same speed?

    <p>Four times the first one</p> Signup and view all the answers

    What is the coefficient of fluctuation of speed for an engine with a speed range between 390 and 410 rpm in a cycle of operation?

    <p>0.1</p> Signup and view all the answers

    Which one of these is the correct definition of strain energy?

    <p>Energy stored in a body when strained up to the breaking of a specimen</p> Signup and view all the answers

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