DOM (Dynamics of Machinery) Balancing + Vibration Important Questions

Note:

  • Videos and Notes link related to the questions are also provided for your quick revision
  • These questions are based on GTU(Gujarat Technological University) syllabus for the subject Dynamics of Machinery (DOM)

Tips:

  • Attempt all the questions asked in the paper.
  • You should know the basic meaning of all the terms in DOM subject. So you can elaborate it in exam and easily attend all type of questions.
  • So go through all the definations of all chapters.
  • The way you present your answers in examination matters a lot, so always write cleanly with proper spacing and point wise answers are the best way to write. We also provide tips related to presentation in our videos as you know.
  • Last but not the least, you should watch all the videos related to DOM subject like Dynamics of Machinery (Balancing) and Dynamics of Machinery (vibration). Also do not forget to refer the notes provided along with the videos.

Important Questions for Quick Revision:


Q-1) Static and dynamic Balancing

Q-2) [Theory] Balancing of several masses rotating in same plane

  • Balancing of several masses rotating in same plane (Dynamics Of machinery) [Video]
  • NUMERICAL Balancing of several masses rotating in same plane (DOM/TOM) [Video]
  • Lesson Notes (coming soon)

Q-3) [Theory] Balancing of several masses rotating in different plane

  • [Theory] Balancing of several masses in Different Planes (DOM/TOM) [Video]
  • Lesson Notes (coming soon)

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Q-4) [Numerical] Balancing of several masses rotating in different plane

  • [Analytical Method] Balancing of several masses rotating in Different Plane(DOM/TOM) [Video]
  • [Numerical] (Without Angle)Balancing of masses rotating in different planes (DOM/TOM) [Video]
  • [Numerical] (Find x & y)Balancing of masses rotating in different planes (DOM/TOM) [Video]
  • [NUMERICAL] Balancing of masses rotating in different planes (DOM/TOM) [Video]
  • Lesson Notes (coming soon)

Q-5) [Theory] Partial balancing of primary unbalanced force in reciprocating engines

  • Balancing of Reciprocating Masses [Part-2] | Partial balancing | (Dynamics of Machinery) [Video]
  • Lesson Notes (coming soon)

Q-6) [Numerical] Multi cylinder inline engine (4 cylinder/ 5 cylinder)

  • [Numerical] (With Firing Order) Multicylinder inline engine | Balancing of Reciprocating Mass [Video]
  • [Lesson notes]

Q-7) [Theory] Concept of direct and reverse crank

  • Concept of Direct and Reverse Cranks | Dynamics of Machinery (DOM) [Video]
  • [Lesson notes]

Q-8) Partial balancing of locomotives

  • Partial balancing of Locomotives | Introduction, Working, Types, Why partial balancing?? [Video]
  • Lesson Notes (coming soon)

Q-9) Variation of tractive force, swaying couple and hammer blow

  • Variation of Tractive Force | Effect of Partial Balancing of Locomotives | (DOM) | Tractive Effort [Video]
  • Lesson Notes (coming soon)

Q-10) [Theory & Numerical] Balancing of V-engines

  • [Theory] Balancing of V-Engines | Dynamics of Machinery (DOM) [Video]
  • [Numerical] Balancing of V engines | Dynamics of machinery (DOM) [Video]
  • [Lesson notes]

Q-11) [Theory] Equilibrium method, Energy Method, Rayleigh Method

  • D'Alembert's Principle / Equilibrium Method (Dynamics of machinery) [Video]
  • Energy Method for undamped free vibration (Dynamics of Machinery) [Video]
  • Lesson Notes (coming soon)

Q-12)​ [Numerical] Energy and Equilibrium method

  • Equilibrium Method Numerical (Undamped free vibrations) (Dynamics of Machinery) [Video]
  • Energy Method NUMERICAL-1 (Undamped free Vibrations) (Dynamics of Machinery) [Video]
  • Energy Method NUMERICAL-2 (Undamped free vibration) (Dynamics of machinery) [Video]
  • Energy Method NUMERICAL-3 (Undamped free Vibrations) (Dynamics of Machinery) [Video]
  • Energy Method Numerical-4 (Dynamics of Machinery) [Video]
  • Lesson Notes (coming soon)

Q-13)​ Types of Damping

  • Video (coming soon)
  • Lesson Notes (coming soon)

Q-14)​ Damped free vibration with viscous damping

  • Damped Free Vibrations with Viscous Damping-Theory (Equation of motion) (DOM) [Video]
  • Lesson Notes (coming soon)

Q-15)​ [Theory & Numerical] Logarithmic Decrement

  • Logarithmic Decrement Derivation in Hindi | Damped Free Vibration | Dynamics of machinery (DOM) [Video]
  • [Lesson notes]

Q-16)​ [Theory] Forced damped vibration with constant harmonic excitation

  • Forced Damped Vibration with Constant Harmonic Excitation in Hindi | Dynamics of Machinery (DOM) [Video]
  • Lesson Notes (coming soon)

Q-17)​ [Theory] Magnification Factor

  • Magnification Factor or Dynamic Magnifier | Forced Damped Vibration | DOM [Video]
  • Lesson Notes (coming soon)

Q-18)​ [Theory & Numerical] Forced vibrations due to rotating unbalance

  • Forced Vibration with Rotating and Reciprocating Unbalance | Dynamics of Machinery [Video]
  • [Numerical] Forced Vibration with Rotating and Reciprocating Unbalance | Dynamics Of Machinery [Video]
  • Lesson Notes (coming soon)

Q-19)​ Vibration Transmissibility – Force and Motion Transmissibility

  • Vibration Isolation | Definition, Objectives, Types | Vibration isolation and Transmissibility [Video]
  • Vibration Transmissibility (Force Transmissibility And Motion Transmissibility) Derivation | DOM [Video]
  • Lesson Notes (coming soon)

Q-20)​ Numericals on Force Transmissibility

  • Numerical 1 | Vibration Isolation and Transmissibility | Dynamics of machinery [Video]
  • Numerical 2 | Vibration Isolation and Transmissibility | Dynamics of machinery [Video]
  • Numerical 3 | Vibration Isolation and Transmissibility | Dynamics of machinery [Video]
  • Numerical 4 | Vibration Isolation and Transmissibility | Dynamics of machinery [Video]
  • Lesson Notes (coming soon)

Q-21)​ Free Torsional vibration of two rotor system

  • Torsional Vibrations [Undamped Free] (Dynamics of Machinery) [Video]
  • Lesson Notes (coming soon)

Q-22)​ [Theory & Numerical] Torsional equivalent shaft

  • Video (coming soon)
  • Lesson Notes (coming soon)

Q-23)​ Torsional vibration of geared system

  • Video (coming soon)
  • Lesson Notes (coming soon)

Q-24)​ Natural frequency of shaft carrying multiple rotors

  • Video (coming soon)
  • Lesson Notes (coming soon)

Q-25)​ Critical speed of shaft carrying single rotor (Without damping)

  • Video (coming soon)
  • Lesson Notes (coming soon)

Q-26)​ One question from Vibration Measurement. So workout the diagrams of different measuring instruments thoroughly and explain the diagrams in exam


Q-27)​ Jump and Cross-Over Shock (Cam Dynamics)

  • Video (coming soon)
  • Lesson Notes (coming soon)

Q-28)​ Spring Surge, Unbalanced and Windup (Cam Dynamics)

  • Video (coming soon)
  • Lesson Notes (coming soon)


Aim to attend all the questions
All the best