Related Questions

The type of rotary compressor used in gas turbines, is of
A Centrifugal type
B Axial flow type
C Radial flow type
D None of these
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
A Reversed Carnot cycle
B Reversed Joule cycle
C Reversed Brayton cycle
D Reversed Otto cycle
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
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 maximum delivery pressure in a rotary air compressor is
A 10 bar
B 20 bar
C 30 bar
D 50 bar
The criterion of the thermodynamic efficiency for rotary compressor is
A Isentropic compression
B Isothermal compression
C Polytropic compression
D None of the above
Which of the following motors one will choose to drive the rotary compressor?
A D.C. shunt motor
B D.C. series motor
C Universal motor
D Synchronous motor
The thermodynamic efficiency of rotary compressor is based on
A Isothermal compression
B Adiabatic compression
C Isentropic compression
D Polytropic compression
A rotary compressor is driven by an
A Electric motor
B Engine
C Either (A) or (B)
D None of these
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

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