Related Questions

The maximum delivery pressure in a rotary air compressor is
A 10 bar
B 20 bar
C 30 bar
D 50 bar
The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.
A P, Q and R
B P and R
C R and S
D P, R and S
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
D Pressure coefficient
In a high pressure compressor, the delivery pressure is
A 1 to 5 bar
B 5 to 8 bar
C 8 to 10 bar
D 10 to 15 bar
In a centrifugal compressor, the flow of air is ________ to the axis of compressor.
A Parallel
B Perpendicular
C Inclined
D None of these
If the flow of air through the compressor is parallel to its axis, then the compressor is
A Reciprocating compressor
B Centrifugal compressor
C Axial flow compressor
D Turbo compressor
For very low pressure and high discharge rate, the compressor used is a/an __________ compressor.
A Axial
B Reciprocating
C Rotary
D None of these
In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in ________ of the piston.
A One stroke
B Two strokes
C Three strokes
D Four strokes
More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than
A 2 kg/cm2
B 6 kg/cm2
C 10 kg/cm2
D 14.7 kg/cm2
The type of rotary compressor used in aeroplanes, is of
A Centrifugal type
B Axial flow type
C Radial flow type
D None of these

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