The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.

A. Equal to

B. Less than

C. More than

D. None of these

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  1. To avoid moisture troubles, the compressed air main line should
  2. An aftercooler is used to
  3. The efficiency of jet engine is
  4. The mass of gas turbine per kW developed is about ________ as that of an I.C. engine.
  5. The maximum compression ratio in an actual single stage axial flow compressor is of the order of
  6. In the axial flow gas turbine, the work ratio is the ratio of
  7. The degree of reaction is usually kept ________ for all types of axial flow compressors.
  8. The capacity of a compressor is expressed in
  9. The thermodynamic efficiency of rotary compressor is based on
  10. Which one of the following is the effect of blade shape on performance of a centrifugal compressor?
  11. The maximum propulsion efficiency of a turbojet is attained at around following speed
  12. For minimum work required to compress and deliver a quantity of air by multistage compression
  13. Which of the following statement is correct relating to rocket engines?
  14. Ratio of indicated H.P. and brake H.P. is known as
  15. Free air is the air at
  16. The reason for volumetric efficiency of reciprocating compressor being less than 100 percent is
  17. Clearance volume in actual reciprocating compressors is essential
  18. The efficiency of a jet engine is higher at
  19. A compressor at high altitude will draw
  20. The material commonly used for air craft gas turbine is
  21. An air compressor may be controlled by
  22. In a centrifugal compressor, the flow of air is ________ to the axis of compressor.
  23. The inlet pressure is always ________ the discharge pressure.
  24. In air breathing jet engine, the jet is formed by expanding
  25. The clearance volume of the air compressor is kept minimum because
  26. The stagnation pressure rise in a centrifugal compressor takes place
  27. The pressure and temperature conditions of air at the suction of compressor are
  28. The volume of air delivered in a medium capacity air compressor per unit time is
  29. Pick up the wrong statement
  30. Water is injected in gas turbine cycle to