Combustion Instability MCQ

Test your knowledge with important Combustion Instability MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Combustion Instability MCQs on Bissoy. Bissoy App

• Acoustically stimulated variations in droplet mixing and/or vaporization can cause ___________
  ক

  screeching

  খ

  spinning wave

  গ

  traveling wave

  ঘ

  pogo
• Tangential mode of instability has the following modes ____________
  ক

  standing and travelling waves

  খ

  travelling and spinning waves

  গ

  travelling and longitudinal waves

  ঘ

  spinning and radial waves
• Transverse mode of high-frequency instability propagation can be broken into ___________
  ক

  longitudinal and radial modes

  খ

  longitudinal and tangential modes

  গ

  radial, tangential and longitudinal modes

  ঘ

  tangential and radial modes
• Which of the following combustion instabilities happen due to propellant flow rate disturbances?
  ক

  Screeching

  খ

  Entropy waves

  গ

  Screaming

  ঘ

  Pogo
• Which of the following combustion instabilities occur due to propellant pump cavitation?
  ক

  Buzzing

  খ

  Chugging

  গ

  Pogo

  ঘ

  Screaming
• high-frequency combustion instability is called ________
  ক

  squealing

  খ

  buzzing

  গ

  chugging

  ঘ

  entropy waves
• Intermediate frequency combustion instability is called ________
  ক

  squealing

  খ

  chugging

  গ

  screaming

  ঘ

  buzzing
• low-frequency combustion instability is called ________
  ক

  chugging

  খ

  buzzing

  গ

  squealing

  ঘ

  screaming
• Which of the following terms best describe the combustion when the pressure fluctuations during steady operation is 12% of the mean chamber pressure?
  ক

  Complete combustion

  খ

  Incomplete combustion

  গ

  Smooth combustion

  ঘ

  Rough combustion
• Which of the following terms best describes the combustion when the pressure fluctuation during steady operation is 4% of the mean chamber pressure?
  ক

  Smooth combustion

  খ

  Rough combustion

  গ

  Combustion instability

  ঘ

  Complete combustion