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The efficiency of a jet engine is higher at

A. Low speeds

B. High speeds

C. Low altitudes

D. High altitudes

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  1. Pick up the wrong statement
  2. The pressure and temperature conditions of air at the suction of compressor are
  3. Phenomenon of choking in compressor means
  4. The effective power of gas turbines is increased by adding the following in compressor
  5. Separators are generally used in air compressor installations
  6. In a jet propulsion
  7. An ideal air compressor cycle without clearance on PV diagram can be represented by following processes
  8. Mechanical efficiency of gas turbines as compared to I.C engines is
  9. Ramjet engine
  10. The minimum work required for a three stage reciprocating air compressor is ________ the work required…
  11. Water is injected in gas turbine cycle to
  12. The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.
  13. In a double acting compressor, the air is compressed
  14. Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is
  15. The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor…
  16. In a single stage, single acting reciprocating air compressor, without clearance volume, the workdone…
  17. The axial flow compressor is preferred in aircraft gas turbines because of
  18. If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air…
  19. The capacity of a compressor is 5 m /min refers to
  20. Gas turbine cycle with regenerator
  21. The compressed air may be used
  22. Axial flow compressor has the following advantage over centrifugal compressor
  23. If the flow of air through the compressor is perpendicular to its axis, then it is a
  24. A closed gas turbine in which fuel is burnt directly in the air is not possible because of
  25. The overall isothermal efficiency of compressor is defined as the ratio of
  26. The performance of air compressor at high altitudes will be ________ as compared to that at sea level.
  27. Maximum delivery pressure is a rotary air compressor is of the order of
  28. Efficiency of gas turbine is increased by
  29. During peak load periods, the best method of controlling compressors is
  30. For slow speed large capacity compressor, following type of valve will be best suited