Related Questions

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
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
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 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
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
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
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
The compressor capacity with decrease in suction temperature
A Increases
B Decreases
C Remain unaffected
D May increase or decrease depending on compressor capacity
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 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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