Which of the following statement is correct?

A. The ratio of the discharge pressure to the inlet pressure of air is called compressor efficiency

B. The compression ratio for the compressor is always greater than unity

C. The compressor capacity is the ratio of workdone per cycle to the stroke volume

D. During isothermal compression of air, the workdone in a compressor is maximum

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  1. For minimum work required to compress and deliver a quantity of air by multistage compression
  2. 1 m of air at atmospheric condition weighs approximately
  3. Rotary compressors are suitable for
  4. The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________…
  5. Ram compression in turbojet involves
  6. The air-fuel ratio in gas turbines is of the order of
  7. In a single stage, single acting reciprocating air compressor, without clearance volume, the workdone…
  8. The following property is most important for material used for gas turbine blade
  9. The efficiency of a jet engine is higher at
  10. The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity)
  11. A jet engine works on the principle of conservation of
  12. For supplying intermittent small quantity of air at high pressure, following compressor is best suited
  13. Propulsive efficiency is defined as ratio of
  14. In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor…
  15. Stalling of blades in axial flow compressor is the phenomenon of
  16. The efficiency and work ratio of a gas turbine plant can be increased by
  17. The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known…
  18. The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of
  19. Axial flow compressor has the following advantage over centrifugal compressor
  20. The capacity of compressor will be highest when its intake temperature is
  21. For perfect intercooling in a two stage compressor
  22. Ratio of indicated H.P. and brake H.P. is known as
  23. The reason for volumetric efficiency of reciprocating compressor being less than 100 percent is
  24. The ratio of isentropic work to Eulers work is known as
  25. Euler's equation is applicable for
  26. In a centrifugal compressor, the flow of air is ________ to the axis of compressor.
  27. The closed cycle in gas turbines
  28. Separators in compressor installations are located
  29. The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade…
  30. Aeroplanes employ following type of compressor