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
C. Rotor to static enthalpy rise in the stage
To increase the output
To increase the efficiency
To save fuel
To reduce the exit temperature
3 m³/ mt.
1.5 m³/ mt.
18 m³/ mt.
6 m³/ mt.
0.5 kg
1.0 kg
1.3 kg
2.2 kg
Lower heating value
Higher heating value
Heating value
Higher calorific value
Lower power consumption per unit of air delivered
Higher volumetric efficiency
Decreased discharge temperature
All of the above
Paucity of O2
Increasing gas temperature
High specific volume
High friction losses
1.03 kg/cm²
1.06 kg/cm²
1.00 kg/cm²
0.53 kg/cm²
Rise gradually towards the point of use
Drop gradually towards the point of use
Be laid vertically
Be laid exactly horizontally
r -1
1 - r -1
1 - (1/r) -1/
1 - (1/r) /-1
Two times
Three times
Four times
Six times
In gas turbine plants
For operating pneumatic drills
In starting and supercharging of I.C. engines
All of the above
Air stream blocking the passage
Motion of air at sonic velocity
Unsteady periodic and reversed flow
Air stream not able to follow the blade contour
0.1 %
0.5 %
1.0 %
5 %
Lowest
Highest
Anything
Atmospheric
Same
More
Less
Zero
Pressure ratio
Maximum cycle temperature
Minimum cycle temperature
All of the above
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
Liquid hydrogen
High speed diesel oil
Kerosene
Methyl alcohol
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
30 : 1
40 : 1
50 : 1
60 : 1
Equal to
Less than
More than
None of these
7 : 1
15 : 1
30 : 1
50 : 1.
Highly heated atmospheric air
Solids
Liquid
Plasma
p₂/p₁ = p₃/p₂ = p₄/p₃
p₃/p₁ = p₄/p₂
p₁ p₂ = p₃ p₄
p₁ p₃ = p₂ p₄
Increase velocity
Make the flow streamline
Convert pressure energy into kinetic energy
Convert kinetic energy into pressure energy
Indicated power
Brake power
Frictional power
None of these
Mechanical efficiency
Volumetric efficiency
Isothermal efficiency
Adiabatic efficiency
More
Less
Same
Depends on other factors
Reduced volume flow rate
Increased volume flow rate
Lower suction pressure
Lower delivery pressure
Increase
Decrease
Remain unaffected
Other factors control it