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Ramjet engine

A. Is self operating at zero flight speed

B. Is not self operating at zero flight speed

C. Requires no air for its operation

D. Produces a jet consisting of plasma

Correct Answer : B.


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  1. Axial flow compressor resembles
  2. In a centrifugal compressor, the ratio of the ________ to the blade velocity is called slip factor.
  3. A simple turbojet engine is basically
  4. Rotary compressor is best suited for
  5. A 3 m³/min compressor means that it
  6. Gas turbine blades are given a rake
  7. Gas turbines for power generation are normally used
  8. The mean effective pressure of the compressor is the
  9. The power available for takeoff and climb in case of turbojet engine as compared to reciprocating engine…
  10. The overall isothermal efficiency of compressor is defined as the ratio of
  11. If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air…
  12. The work ratio of simple gas turbine cycle depends on
  13. A centrifugal compressor works on the principle of
  14. The compression ratio for the compressor is always __________ unity.
  15. Reheating in multistage expansion gas turbine results in
  16. In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working…
  17. The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before…
  18. Free air is the air at
  19. The velocity of air entering in a rocket is ________ as compared to an aircraft.
  20. The thermal efficiency of a gas turbine as compared to a diesel plant is
  21. A rocket engine uses ________ for the combustion of its fuel.
  22. Standard air is the air at ________ and relative humidity of 36 percent.
  23. Isothermal compression though most efficient, but is not practicable because
  24. In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor…
  25. An air compressor may be controlled by
  26. Gas turbine as compared to steam turbine
  27. If the flow of air through the compressor is parallel to its axis, then the compressor is
  28. The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is
  29. Which of the following statement is wrong?
  30. Which one of the following is the effect of blade shape on performance of a centrifugal compressor?