Air Compressor - Air Compressor objective questions and answers

36. In an axial flow compressor the ratio of pressure in the rotor blades to the pressure rise in the compression in one stage.......

   A.What factor

   B.Slip factor

   C.Degree of reaction

   D.Pressure coefficient

37. The compressor efficiency is the .......

   A.Isothermal HP/indicated HP

   B.Isothermal HP/shaft HP

   C.Total output/air input

   D.Compression work/motor input

38. Separators in compressor installations are located.........

   A.Before intercooler

   B.After intercooler

   C.After receiver

   C.Between after cooler and air receiver

39. An air compressor may be controlled by......

   A.Throttle control

   B.Clearance control

   C.Blow-off control

   D.Any of the above

40. For a compressor least work will be done if the compression is .......

   A.Isentropic

   B.Isothermal

   C.Polytropic

   D.None of this

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