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The pressure and temperature conditions of air at the suction of compressor are

A. Atmospheric

B. Slightly more than atmospheric

C. Slightly less than atmospheric

D. Pressure slightly less than atmospheric and temperature slightly more than atmospheric

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  1. If p₁ is the pressure of air entering the L.P, cylinder and p₃ is the pressure of air…
  2. The axial flow compressor is preferred in aircraft gas turbines because of
  3. The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called
  4. 1 m of air at atmospheric condition weighs approximately
  5. The volumetric efficiency for reciprocating air compressors is about
  6. Work ratio of a gas turbine may be improved by
  7. The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor…
  8. The compression ratio in a gas turbine is of the order of
  9. For slow speed large capacity compressor, following type of valve will be best suited
  10. In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working…
  11. Phenomenon of choking in compressor means
  12. The pressure of air at the beginning of the compression stroke is ________ the atmospheric pressure.
  13. A machine used to raise the pressure of air is called
  14. Propulsion efficiency of the following order is obtained in practice
  15. In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs…
  16. If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air…
  17. In a high pressure compressor, the delivery pressure is
  18. A jet engine works on the principle of conservation of
  19. Pick up the correct statement
  20. Aeroplanes employ following type of compressor
  21. The minimum work required for a three stage reciprocating air compressor is ________ the work required…
  22. The advantage of multistage compression over single stage compression is
  23. In a jet propulsion
  24. Reheating in a multistage expansion gas turbine __________ compressor work.
  25. For a two stage compressor, if index of compression for higher stage is greater than index of compression…
  26. The pressure and temperature conditions of air at the suction of compressor are
  27. In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of
  28. The main purpose of reheating in gas turbine is to
  29. In jet engines, paraffin is usually used as the fuel because of its
  30. The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.