The thermodynamic efficiency of rotary compressor is based on

A. Isothermal compression

B. Adiabatic compression

C. Isentropic compression

D. Polytropic compression

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  1. In air compressors, free air delivery means the
  2. The compressor capacity is defined as the
  3. In a centrifugal compressor, an increase in speed at a given pressure ratio causes
  4. Actual compression curve is
  5. Pick up the wrong statement
  6. Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is
  7. In a high pressure compressor, the delivery pressure is
  8. Producer gas is produced by
  9. The overall efficiency of the compressed air system is the
  10. The following property is most important for material used for gas turbine blade
  11. If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of…
  12. 1 m of air at atmospheric condition weighs approximately
  13. The main purpose of reheating in gas turbine is to
  14. The degree of reaction is usually kept ________ for all types of axial flow compressors.
  15. The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity)
  16. In multistage compressor, the isothermal compression is achieved by
  17. Volumetric efficiency is
  18. Work ratio of a gas turbine plant is ratio of
  19. Water gas is produced by
  20. Pressure ratio in gas turbines is the ratio of
  21. The ratio of workdone per cycle to the stroke volume of the compressor is known as
  22. In a single stage, single acting reciprocating air compressor without clearance volume, the workdone…
  23. Surging is the phenomenon of
  24. The ratio of specific weight/h.p. of gas turbine and I.C engines may be typically of the order of
  25. Stalling of blades in axial flow compressor is the phenomenon of
  26. In the axial flow gas turbine, the work ratio is the ratio of
  27. The maximum delivery pressure in a rotary air compressor is
  28. The inlet pressure is always ________ the discharge pressure.
  29. In a centrifugal compressor, the ratio of the ________ to the blade velocity is called slip factor.
  30. In a four stage compressor, if the pressure at the first and third stage is 1 bar and 16 bar, then the…