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A simple turbojet engine is basically

A. A propeller system

B. Gas turbine engine equipped with a propulsive nozzle and diffuse

C. Chemical rocket engine

D. Ramjet engine

Correct Answer : B.


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  1. The ratio of work done per cycle to the swept volume in case of compressor is called
  2. A closed cycle gas turbine gives ________ efficiency as compared to an open cycle gas turbine.
  3. In a jet propulsion
  4. Propulsive efficiency is defined as ratio of
  5. An air compressor may be controlled by
  6. Which of the following statement is wrong?
  7. To avoid moisture troubles, the branch connections from compressed air lines should be taken from
  8. In air compressors, free air delivery means the
  9. Which of the following statement is correct relating to rocket engines?
  10. Propulsion efficiency of the following order is obtained in practice
  11. The axial flow compressor is preferred in aircraft gas turbines because of
  12. Axial flow compressor has the following advantage over centrifugal compressor
  13. Ratio of indicated H.P. and brake H.P. is known as
  14. The air is delivered ________ in one revolution in case of a three lobbed rotor.
  15. The compressor capacity with decrease in suction temperature
  16. The working fluid in a turbine is
  17. Ramjet engine
  18. Choose the correct statement
  19. An aftercooler is used to
  20. The blades of gas turbine are made of
  21. The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before…
  22. For perfect intercooling in a three stage compressor
  23. If p₁ is the pressure of air entering the L.P, cylinder and p₃ is the pressure of air…
  24. In n₁ and n₂ are the indices of compression for the first and second stage of compression,…
  25. When air is to be compressed at a high pressure, then it is advantageous to use
  26. In jet propulsion power unit, the inlet duct of diverging shape is used in order to
  27. Free air is the air at
  28. Which of the following statement is correct as regard to centrifugal compressors?
  29. More than one stage will be preferred for reciprocating compressor if the delivery pressure is more…
  30. In a centrifugal compressor, an increase in speed at a given pressure ratio causes