In a jet propulsion

A. The propulsive matter is ejected from within the propelled body

B. The propulsive matter is caused to flow around the propelled body

C. Its functioning does not depend upon presence of air

D. None of the above

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  1. The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is…
  2. Pick up the wrong statement
  3. In n₁ and n₂ are the indices of compression for the first and second stage of compression,…
  4. An air compressor may be controlled by
  5. To avoid moisture troubles, the compressed air main line should
  6. Pick up the correct statement
  7. Which of the following statement is correct relating to rocket engines?
  8. Rotary compressors are suitable for
  9. Volumetric efficiency of air compressors is of the order of
  10. High air-fuel ratio in gas turbines
  11. In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working…
  12. If p₁ is the pressure of air entering the L.P, cylinder and p₃ is the pressure of air…
  13. 1 m of air at atmospheric condition weighs approximately
  14. Gas turbines use following type of air compressor
  15. The ratio of isentropic work to Euler work is known as
  16. The ratio of the discharge pressure to the inlet pressure of air is called
  17. Pick up the wrong statement
  18. A 3 m³/min compressor means that it
  19. The pressure and temperature conditions of air at the suction of compressor are
  20. Gas turbine works on
  21. During peak load periods, the best method of controlling compressors is
  22. In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine…
  23. Separators in compressor installations are located
  24. A jet engine works on the principle of conservation of
  25. A rocket engine for the combustion of its fuel
  26. The thrust of a jet propulsion power unit can be increased by
  27. Losses in a centrifugal compressor are due to
  28. Inter-cooling in gas turbine results in
  29. Gas turbines for power generation are normally used
  30. The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.