A turboprop is preferred to turbojet because

A. It has high propulsive efficiency at high speeds

B. It can fly at supersonic speeds

C. It can fly at high elevations

D. It has high power for take off

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  1. The volumetric efficiency of compressor with increase in compression ratio will
  2. The blades of gas turbine are made of
  3. The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is
  4. Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be
  5. The material commonly used for air craft gas turbine is
  6. The workdone on a compressor will be minimum if air is taken from
  7. The maximum delivery pressure in a rotary air compressor is
  8. Volumetric efficiency of a compressor decreases with ________ in compression ratio.
  9. Euler's equation can be used for
  10. In a reciprocating air compressor, the compression work per kg of air
  11. In a centrifugal compressor, an increase in speed at a given pressure ratio causes
  12. Reheating in a gas turbine
  13. A compressor at high altitudes will require ________ power.
  14. In multistage compressor, the isothermal compression is achieved by
  15. Gas turbines for power generation are normally used
  16. In jet engines the products of combustion after passing through the gas turbine are discharged into
  17. The mass of gas turbine per kW developed is about ________ as that of an I.C. engine.
  18. Gas turbine works on
  19. Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is
  20. In jet engines, paraffin is usually used as the fuel because of its
  21. Diffuser in a compressor is used to
  22. The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity)
  23. Work ratio of a gas turbine plant is ratio of
  24. In n₁ and n₂ are the indices of compression for the first and second stage of compression,…
  25. In the aircraft propellers
  26. If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air…
  27. With the decrease in compression ratio, the volumetric efficiency
  28. The type of rotary compressor used in aeroplanes, is of
  29. The volume of air delivered in a medium capacity air compressor per unit time is
  30. If the flow of air through the compressor is perpendicular to its axis, then it is a