Related Questions

In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure __________ the vapor pressure of the liquid at the suction temperature.
A Lower than
B Higher than
C Equal to
D None of these
The pressure and temperature conditions of air at the suction of compressor are
A Atmospheric
B Slightly more than atmospheric
C Slightly less than atmospheric
D Pressure slightly less than atmospheric and temperature slightly more than atmospheric
The volume of air sucked by the compressor during its suction stroke is called
A Free air delivery
B Compressor capacity
C Swept volume
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
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is
A Bigger
B Smaller
C Equal
D Smaller/bigger depending on capacity
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.
A Compressor
B Condenser
C Expansion valve
D Evaporator
In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to
A Collect liquid refrigerant and prevent it from going to compressor
B Detect liquid in vapour
C Superheat the vapour
D Collect vapours
A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump.
A Sump
B Volute
C Vacuum
D Submerged
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
In a centrifugal compressor, the flow of air is ________ to the axis of compressor.
A Parallel
B Perpendicular
C Inclined
D None of these

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