Free Vibrations Types Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What type of vibrations occur when particles move parallel to the axis of the shaft?

  • Torsional vibrations
  • Transverse vibrations
  • Longitudinal vibrations (correct)
  • Radial vibrations

Which type of vibrations induce bending stresses in the shaft?

  • Transverse vibrations (correct)
  • Longitudinal vibrations
  • Helical vibrations
  • Torsional vibrations

In which type of vibrations do particles move in a circle about the axis of the shaft?

  • Longitudinal vibrations
  • Torsional vibrations (correct)
  • Transverse vibrations
  • Circular vibrations

What happens to the shaft during longitudinal vibrations?

<p>It is elongated and shortened alternately (C)</p> Signup and view all the answers

Which type of vibrations induce tensile and compressive stresses alternately in the shaft?

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

When particles move approximately perpendicular to the shaft's axis, what type of vibrations occur?

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

What is the speed at which the shaft runs so that the additional deflection of the shaft from the axis of rotation becomes infinite?

<p>Critical or whirling speed (D)</p> Signup and view all the answers

What factor does the bending of the shaft depend on besides the value of eccentricity?

<p>Speed at which the shaft rotates (D)</p> Signup and view all the answers

What does the force resisting the deflection of the shaft depend on?

<p>Stiffness of the shaft (A)</p> Signup and view all the answers

What happens to the value of y when the circular frequency n exceeds a certain value?

<p>Value of y becomes negative (B)</p> Signup and view all the answers

What is defined as the same as the natural frequency of transverse vibration, with a unit in revolutions per second?

<p>Critical or whirling speed (D)</p> Signup and view all the answers

In a three-rotor system, when do torsional vibrations occur?

<p>When rotors A and B move in opposite directions (A)</p> Signup and view all the answers

In a two-rotor system, where does the node lie?

<p>At Point N (C)</p> Signup and view all the answers

What does C represent in the context of a three-rotor system?

<p>Modulus of rigidity for shaft (D)</p> Signup and view all the answers

What does 'd' represent in a two-rotor system?

<p>Diameter of the shaft (B)</p> Signup and view all the answers

What is represented by 'IA' in a two-rotor system?

<p>Mass moment of inertia for rotor A (A)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Browser