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The thrust of a jet propulsion power unit can be increased by

A. Injecting water into the compressor

B. Burning fuel after gas turbine

C. Injecting ammonia into the combustion chamber

D. All of the above

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  1. The capacity of a compressor is 5 m /min refers to
  2. The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor…
  3. The volumetric efficiency of a compressor
  4. For a two stage compressor, if index of compression for higher stage is greater than index of compression…
  5. Pick up the wrong statement
  6. Volumetric efficiency of air compressors is of the order of
  7. For minimum work in multistage compression, assuming same index of compression in all stages
  8. Isothermal compression though most efficient, but is not practicable because
  9. Axial flow compressor resembles
  10. The minimum work required for a three stage reciprocating air compressor is ________ the work required…
  11. In multistage compressor, the isothermal compression is achieved by
  12. Reheating in multistage expansion gas turbine results in
  13. Which of the following statement is correct?
  14. The pressure and temperature conditions of air at the suction of compressor are
  15. Pick up the wrong statement
  16. In n₁ and n₂ are the indices of compression for the first and second stage of compression,…
  17. The ratio of the discharge pressure to the inlet pressure of air is called
  18. A turboprop is preferred to turbojet because
  19. In a single stage, single acting reciprocating air compressor, without clearance volume, the workdone…
  20. Air-fuel ratio in a jet engine will be of the order of
  21. In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs…
  22. Ratio of indicated h.p. to shaft h.p. in known as
  23. To avoid moisture troubles, the branch connections from compressed air lines should be taken from
  24. Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be
  25. Producer gas is produced by
  26. The work done per unit mass of air in compression will be least when n is equal to
  27. For supplying intermittent small quantity of air at high pressure, following compressor is best suited
  28. The efficiency of roots blower ________ with the increase in pressure ratio.
  29. The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before…
  30. Open cycle gas turbine works on