Propulsion efficiency of the following order is obtained in practice

A. 34 %

B. 50 %

C. 60 %

D. 72 %

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  1. Mechanical efficiency of gas turbines as compared to I.C engines is
  2. Free air is the air at
  3. Intercooling in gas turbines
  4. The ratio of the net work obtained from the gas turbine plant to the turbine work is known as
  5. For slow speed large capacity compressor, following type of valve will be best suited
  6. The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before…
  7. Open cycle gas turbine works on
  8. An ideal air compressor cycle without clearance on PV diagram can be represented by following processes
  9. Which of the following plants is smallest and lightest for generating a given amount of power?
  10. If p₁ is the pressure of air entering the L.P, cylinder and p₃ is the pressure of air…
  11. Volumetric efficiency of air compressors is of the order of
  12. A turboprop is preferred to turbojet because
  13. Compression efficiency is compared against
  14. The workdone on a compressor will be minimum if air is taken from
  15. Isothermal compression efficiency can be attained by running the compressor
  16. Ratio of indicated H.P. and brake H.P. is known as
  17. Turbofan engine employs
  18. In multistage compressor, the isothermal compression is achieved by
  19. Propulsive efficiency is defined as ratio of
  20. In a single stage, single acting reciprocating air compressor without clearance volume, the workdone…
  21. The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram…
  22. A closed gas turbine in which fuel is burnt directly in the air is not possible because of
  23. The pressure of air at the beginning of the compression stroke is ________ the atmospheric pressure.
  24. An ideal air compressor cycle with clearance on PV diagram can be represented by following processes
  25. The capacity of a compressor is expressed in
  26. The compression ratio in a gas turbine is of the order of
  27. The power available for takeoff and climb in case of turbojet engine as compared to reciprocating engine…
  28. For a two stage reciprocating compressor, compression from p₁ to p₃ is with perfect intercooling…
  29. For an irreversible gas turbine cycle, the efficiency and work ratio both depend on
  30. To avoid moisture troubles, the branch connections from compressed air lines should be taken from