The maximum propulsion efficiency of a turbojet is attained at around following speed

A. 550 km/hr

B. 1050 km/hr

C. 1700 km/hr

D. 2400 km/hr

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  1. The volume of air sucked by the compressor during its suction stroke is called
  2. Ram compression in turbojet involves
  3. A closed cycle gas turbine gives ________ efficiency as compared to an open cycle gas turbine.
  4. An air compressor may be controlled by
  5. A compressor mostly used for supercharging of I.C. engines is
  6. Out of the following, from where you will prefer to take intake for air compressor
  7. The air power of the compressor is also known as
  8. The volumetric efficiency of compressor with increase in compression ratio will
  9. The overall isothermal efficiency of the compressor is defined as the ratio of
  10. Gas turbine as compared to internal combustion engine
  11. The capacity of compressor will be highest when its intake temperature is
  12. The ratio of the discharge pressure to the inlet pressure of air is called
  13. The pressure of air at the beginning of the compression stroke is ________ the atmospheric pressure.
  14. A gas turbine used in air craft should have
  15. In a reciprocating air compressor, the compression work per kg of air
  16. The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________…
  17. The work ratio of simple gas turbine cycle depends on
  18. The blades of gas turbine are made of
  19. A jet engine has
  20. If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is…
  21. In n₁ and n₂ are the indices of compression for the first and second stage of compression,…
  22. Euler's equation can be used for
  23. In jet engines the products of combustion after passing through the gas turbine are discharged into
  24. In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of
  25. Isothermal compression efficiency, even when running at high speed, can be approached by using
  26. Cylinder clearance in a compressor should be
  27. In the axial flow gas turbine, the work ratio is the ratio of
  28. In a jet propulsion
  29. Propulsion efficiency of the following order is obtained in practice
  30. Reheating in multistage expansion gas turbine results in