Related Questions

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
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
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
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
The process of supplying the intake air to the engine cylinder at a pressure greater than the pressure of the surrounding atmosphere is known as
A Supercharging
B Auto ignition
C Scavenging
D Detonation
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 slow speed large capacity compressor, following type of valve will be best suited
A Poppet valve
B Mechanical valve of the Corliss, sleeve, rotary or semi rotary type
C Disc or feather type
D Any of the above
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
Axial flow compressor has the following advantage over centrifugal compressor
A Larger air handling ability per unit frontal area
B Higher pressure ratio per stage
C Aerofoil blades are used
D Higher average velocities

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