Blade Element Theory MCQ

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

• For low rotor solidity, profile drag increases.
  ক

  True

  খ

  False
• Why is blade element theory preferred over momentum theory for designing a propeller?
  ক

  Assumes flow inside stream tube as constant

  খ

  Neglects span wise flow

  গ

  Model thrust lag

  ঘ

  Account for varying blade geometry
• How does the blade element theory treat the airfoil as?
  ক

  One-dimensional

  খ

  Two-dimensional

  গ

  Three-dimensional

  ঘ

  One complete body
• How many times is the angular velocity of flow behind airscrew compared to that of angular velocity in plane of airscrew?
  ক

  Same

  খ

  Twice

  গ

  Thrice

  ঘ

  Four times
• The bound and trailing vortex cancel out each other in the plane of the airscrew blade.
  ক

  True

  খ

  False
• Which shape is traced by the trailing vortex at the tip of the airscrew blade?
  ক

  Helix

  খ

  Solenoid

  গ

  Circle

  ঘ

  Sine curve
• What is the blade element theory used for?
  ক

  Predict performance of airscrew airfoil

  খ

  Predict performance of wind turbine

  গ

  Predict performance of supersonic airfoil

  ঘ

  Predict performance of flat plate