(v₁² -v₂²)/2g
(v₁ - v₂)²/2g
(v₁² -v₂²)/g
(v₁ - v₂)²/g
A. (v₁² -v₂²)/2g
Isothermal compression
Isentropic compression
Polytropic compression
None of these
Gauge discharge pressure to the gauge intake pressure
Absolute discharge pressure to the absolute intake pressure
Pressures at discharge and suction corresponding to same temperature
Stroke volume and clearance volume
Same
Less
More
None of these
Adiabatic temperature drop in the stage
Total temperature drop
Total temperature drop in the stage
Total adiabatic temperature drop
Multistage compression
Cold water spray
Both (A) and (B) above
Fully insulating the cylinder
Carbonisation of coal
Passing steam over incandescent coke
Passing air and a large amount of steam over waste coal at about 65°C
Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
High thermal efficiency
Reduction in compressor work
Decrease of heat loss in exhaust
Maximum work output
Same
One-half
One fourth
One sixth
Atmosphere
Vacuum
Discharge nozzle
Back to the compressor
Lower heating value
Higher heating value
Heating value
Higher calorific value
The compression ratio in each stage should be same
The intercooling should be perfect
The workdone in each stage should be same
All of the above
Lowest
Highest
Anything
Atmospheric
Isothermal
Isentropic
Adiabatic
Isochoric
N.T.P. conditions
Intake temperature and pressure conditions
0°C and 1 kg/cm²
20°C and 1 kg/cm²
Provides greater flexibility
Provides lesser flexibility
In never used
Is used when gas is to be burnt
Liquid hydrogen
High speed diesel oil
Kerosene
Methyl alcohol
In gas turbine plants
For operating pneumatic drills
In starting and supercharging of I.C. engines
All of the above
Large discharge at high pressure
Low discharge at high pressure
Large discharge at low pressure
Low discharge at low pressure
0.5 kg
1.0 kg
1.3 kg
2.2 kg
Decreases
Increases
Does not change
None of these
There is no pressure drop in the intercooler
The compression in both the cylinders is polytropic
The suction and delivery of air takes place at constant pressure
All of the above
Ratio of shaft output of the air motor to the shaft input to the compressor
Ratio of shaft input to the compressor to the shaft output of air motor
Product of shaft output of air motor and shaft input to the compressor
None of the above
Isothermal
Polytropic
Isentropic
Any one of these
Large quantity of air at high pressure
Small quantity of air at high pressure
Small quantity of air at low pressure
Large quantity of air at low pressure
They can generate very high thrust
They have high propulsion efficiency
These engines can work on several fuels
They are not air breathing engines
Rotor to static enthalpy rise in the stator
Stator to static enthalpy rise in the rotor
Rotor to static enthalpy rise in the stage
Stator to static enthalpy rise in the stage
Ideal compression
Adiabatic compression
Isentropic compression
Isothermal compression
Isothermally
Polytropically
Isentropically
None of these
Same
Higher
Lower
None of these
Radial flow compressors
Axial flow compressors
Pumps
All of these