The air-fuel ratio in gas turbines is of the order of

A. 7 : 1

B. 15 : 1

C. 30 : 1

D. 50 : 1.

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  1. In a jet propulsion
  2. For supplying intermittent small quantity of air at high pressure, following compressor is best suited
  3. The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity)
  4. The effective power of gas turbines is increased by adding the following in compressor
  5. The criterion of the thermodynamic efficiency for rotary compressor is
  6. Gas turbines use following type of air compressor
  7. Which is false statement about advantages of multistage compressor in comparison to single stage compressor?
  8. A compressor mostly used for supercharging of I.C. engines is
  9. The ratio of the indicated power to the shaft power or brake power of the motor or engine required to…
  10. Clearance volume in actual reciprocating compressors is essential
  11. In a double acting compressor, the air is compressed
  12. A rocket works with maximum overall efficiency when air craft velocity is equal to the
  13. When the temperature of air leaving the intercooler, in a two stage compression with intercooler, is…
  14. During base load operation, the best method of controlling compressor is
  15. Surging is the phenomenon of
  16. Which of the following statement is correct relating to rocket engines?
  17. For a two stage compressor, if index of compression for higher stage is greater than index of compression…
  18. Which is false statement about multistage compression?
  19. The work ratio of a gas turbine plant is defined as the ratio of
  20. Pick up the false statement
  21. The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before…
  22. Which of the following plants is smallest and lightest for generating a given amount of power?
  23. Volumetric efficiency of a compressor without clearance volume
  24. The gas in cooling chamber of a closed cycle gas turbine is cooled at
  25. The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called
  26. As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure…
  27. Fighter bombers use following type of engine
  28. The ratio of the net work obtained from the gas turbine plant to the turbine work is known as
  29. Choose the correct statement
  30. Pressure ratio in gas turbines is the ratio of