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In jet propulsion power unit, the inlet duct of diverging shape is used in order to

A. Collect more air

B. Convert kinetic energy of air into pressure energy

C. Provide robust structure

D. Beautify the shape

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

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  1. Ram compression in turbojet involves
  2. If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is…
  3. Reheating in multistage expansion gas turbine results in
  4. Euler's equation can be used for
  5. In a jet engine, the air-fuel ratio is
  6. The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is
  7. The ratio of isentropic work to Euler work is known as
  8. Pick up the correct statement
  9. A centrifugal compressor works on the principle of
  10. For a two stage reciprocating compressor, compression from p₁ to p₃ is with perfect intercooling…
  11. A turboprop is preferred to turbojet because
  12. Phenomenon of choking in compressor means
  13. Which of the following statement is wrong?
  14. A closed gas turbine in which fuel is burnt directly in the air is not possible because of
  15. Which of the following statement is correct as regard to centrifugal compressors?
  16. The inlet pressure is always ________ the discharge pressure.
  17. Which of the following fuels can be used in turbojet engines?
  18. The maximum propulsion efficiency of a turbojet is attained at around following speed
  19. The gas in cooling chamber of a closed cycle gas turbine is cooled at
  20. The compressor capacity with decrease in suction temperature
  21. For supplying intermittent small quantity of air at high pressure, following compressor is best suited
  22. Axial flow compressor resembles
  23. A compressor at high altitude will draw
  24. Pick up the wrong statement
  25. The volumetric efficiency of compressor with increase in compression ratio will
  26. The efficiency of roots blower ________ with the increase in pressure ratio.
  27. In the axial flow gas turbine, the work ratio is the ratio of
  28. The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor…
  29. In a single stage, single acting reciprocating air compressor, without clearance, the workdone on the…
  30. Efficiency of gas turbine is increased by