Only rocket engines can be propelled to space because

A. They can generate very high thrust

B. They have high propulsion efficiency

C. These engines can work on several fuels

D. They are not air breathing engines

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity)
  2. As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure…
  3. In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs…
  4. Volumetric efficiency of air compressors is of the order of
  5. It is not possible to use closed gas turbine cycle in aeronautical engines because
  6. The work ratio of simple gas turbine cycle depends on
  7. The air is delivered ________ in one revolution in case of a three lobbed rotor.
  8. For minimum work in multistage compression, assuming same index of compression in all stages
  9. Which of the following plants is smallest and lightest for generating a given amount of power?
  10. For perfect intercooling in a three stage compressor
  11. Axial flow compressor has the following advantage over centrifugal compressor
  12. An ideal air compressor cycle with clearance on PV diagram can be represented by following processes
  13. In a reciprocating air compressor, the compression work per kg of air
  14. Pick up the false statement
  15. The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is
  16. A rocket engine for the combustion of its fuel
  17. The volumetric efficiency of a compressor
  18. Pick up wrong statement. Surging phenomenon in centrifugal compressor depends on
  19. In multistage compressor, the isothermal compression is achieved by
  20. If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of…
  21. The ratio of the indicated power to the shaft power or brake power of the motor or engine required to…
  22. If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air…
  23. Open cycle gas turbine works on
  24. In the aircraft propellers
  25. Air-fuel ratio in a jet engine will be of the order of
  26. The maximum temperature in a gas turbine is
  27. If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is…
  28. For minimum work required to compress and deliver a quantity of air by multistage compression
  29. The fuel consumption in gas turbines is accounted for by
  30. Cylinder clearance in a compressor should be