The degree of reaction is usually kept ________ for all types of axial flow compressors.

A. 0.2

B. 0.3

C. 0.4

D. 0.5

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  16. When air is to be compressed at a high pressure, then it is advantageous to use
  17. For minimum work in multistage compression, assuming same index of compression in all stages
  18. The material commonly used for air craft gas turbine is
  19. Which of the following fuels can be used in turbojet engines?
  20. Standard air is the air at
  21. The volume of air sucked by the compressor during its suction stroke is called
  22. In a high pressure compressor, the delivery pressure is
  23. Air-fuel ratio in a jet engine will be of the order of
  24. The volumetric efficiency for reciprocating air compressors is about
  25. In which case the air-fuel ratio is likely to be maximum?
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  27. An aftercooler is used to
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  29. The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called
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