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A compressor mostly used for supercharging of I.C. engines is

A. Radial flow compressor

B. Axial flow compressor

C. Roots blower

D. Reciprocating compressor

Correct Answer : A.


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  2. Reheating in a multistage expansion gas turbine __________ compressor work.
  3. The thermal efficiency of a gas turbine as compared to a diesel plant is
  4. In a centrifugal compressor, the flow of air is ________ to the axis of compressor.
  5. In which case the air-fuel ratio is likely to be maximum?
  6. The effective power of gas turbines is increased by adding the following in compressor
  7. High air-fuel ratio in gas turbines
  8. Surging is the phenomenon of
  9. The performance of air compressor at high altitudes will be ________ as compared to that at sea level.
  10. The main purpose of reheating in gas turbine is to
  11. The inlet pressure is always ________ the discharge pressure.
  12. Which of the following statement is correct?
  13. Volumetric efficiency of a compressor decreases with ________ in compression ratio.
  14. The minimum work required for a three stage reciprocating air compressor is ________ the work required…
  15. Which of the following statement is correct?
  16. A jet engine has
  17. If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of…
  18. The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation
  19. The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio)
  20. The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________…
  21. The volume of air delivered by the compressor is called
  22. The working fluid in a turbine is
  23. The air is delivered ________ in one revolution in case of a three lobbed rotor.
  24. The closed cycle in gas turbines
  25. Pick up the wrong statement
  26. Reheating in multistage expansion gas turbine results in
  27. The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity)
  28. A rocket works with maximum overall efficiency when air craft velocity is equal to the
  29. Free air is the air at
  30. Rotary compressors are used for delivering