Related Questions

Two outlets of a motor manufacturing company reported that revenue from outlet x in 2013 was down 11 percent from 2012. and revenue from outlet Y in 2013 were up 7 percent from 2012. If total revenue from outlet X & Y in 2013 was up 1 percent from 2012, what is the ratio of revenue from outlet X in 2012 revenue from outlet Y in 2012?
A 1 : 2
B 4: 5
C 1 : 1
D 3: 2
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
The pressure at the inlet of a refrigerant compressor is called
A Suction pressure
B Discharge pressure
C Critical pressure
D Back pressure
The absolute pressure of air at the outlet of a compressor is called
A Back pressure
B Critical pressure
C Discharge pressure
D None of these
A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be
A Lack of cooling water
B Water temperature being high
C Dirty condenser surface
D All of these
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 ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called
A Slip factor
B Velocity factor
C Velocity coefficient
D None of the above
The refrigerant supplied to a compressor must be
A Superheated vapour refrigerant
B Dry saturated liquid refrigerant
C A mixture of liquid and vapour refrigerant
D None of these
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

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