Air Compressor - Air Compressor objective questions and answers


41. The positive displacement compressor is.......


   A.Roots blower compressor

   B.Centrifugal compressor

   C.Axial flow compressor

   D.Vane blower compressor

   E.Both A and D


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E.Both A and D

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42. If the flow of air through the compressor is perpendicular to its axis,then it is a.......


   A.Reciprocating compressor

   B.Centrifugal compressor

   C.Axial flow compressor

   D.Turbo compressor


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B.Centrifugal compressor

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43. In an axial flow compressor,the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as.........


   A.Work factor

   B.Slip factor

   C.Degree of reaction

   C.Pressure coefficient


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C.Degree of reaction

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44. Reciprocating air compressor is best suited for......


   A.Large quantity of air at high pressure

   B.Small quantity of air at high pressure

   C.Small quantity of air at low pressure

   D.Large quantity of air at low pressure


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B.Small quantity of air at high pressure

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45. Rotary compressor is best suited for.......


   A.Large quantity of air at high pressure

   B.Small quantity of air at high pressure

   C.Small quantity of air at low pressure

   D.Large quantity of air at low pressure


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D.Large quantity of air at low pressure

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