Air Compressor - Air Compressor objective questions and answers


1. The ratio of work-done per cycle to the stroke volume of the compressor is known as.......


   A.Compressor capacity

   B.Compression ratio

   C.Compressor efficiency

   D.Mean effective pressure


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D.Mean effective pressure

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2. The capacity of a compression is 10 m3/minute.10 m 3/minute refers to.......


   A.Standard air

   B.Free air

   C.Compressed air

   D.Compressed air at delivery pressure


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B.Free air

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3. Aeroplanes employe following type of compressor.........


   A.Radial flow

   B.Axial flow

   C.Centrifugal

   C.Combination of above


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B.Axial flow

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4. The multi stage compression as compared to single stage compression......


   A.Improves volumetric efficiency for the given pressure ratio

   B.Reduces work done per kg of air

   C.Reduces cost of compressor

   D.Gives more uniform torque

   E.All of the above


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E.All of the above

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5. Compression efficiency is compared against.......


   A.Ideal compression

   B.adiabatic compression

   C.both isothermal and adiabatic compression

   D.Isentropic compression

   E.Isothermal compression


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E.Isothermal compression

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