H.P. compressor is connected to H.P. turbine and L.P. compressor to L.P. turbine
H.P. compressor is connected to L.P. turbine and L.P. compressor is connected to H.P. turbine
Both the arrangements can be employed
All are connected in series
B. H.P. compressor is connected to L.P. turbine and L.P. compressor is connected to H.P. turbine
Same
Higher
Lower
Dependent on other factors
Liquid hydrogen
High speed diesel oil
Kerosene
Methyl alcohol
Same
More
Less
Zero
Reciprocating compressor
Centrifugal compressor
Axial flow compressor
Turbo compressor
Atmospheric
Slightly more than atmospheric
Slightly less than atmospheric
Pressure slightly less than atmospheric and temperature slightly more than atmospheric
Same
Lower
Higher
None of these
Low frontal area
Higher thrust
High pressure rise
None of these
Same
One-half
One fourth
One sixth
Same
More
Less
Depends on other factors
0.2
0.3
0.4
0.5
Isothermally
Adiabatically
Isentropically
Isochronically
Work factor
Slip factor
Degree of reaction
Pressure coefficient
1 bar
16 bar
64 bar
256 bar
30 : 1
40 : 1
50 : 1
60 : 1
Atmospheric
Slightly more than atmospheric
Slightly less than atmospheric
Pressure slightly less than atmospheric and temperature slightly more than atmospheric
200°C
500°C
700°C
1000°C
75 %
85 %
90 %
99 %
Isothermal h.p. to the BHP of motor
Isothermal h.p. to adiabatic h.p.
Power to drive compressor to isothermal h.p.
Work to compress air isothermally to work for actual compression
Lower power consumption per unit of air delivered
Higher volumetric efficiency
Decreased discharge temperature
All of the above
Remain same
Decrease
Increase
None of the above
Toughness
Fatigue
Creep
Corrosion resistance
Vacuum
Atmospheric air
Compressed air
Oxygen alone
As large as possible
As small as possible
About 50% of swept volume
About 100% of swept volume
Reheating
Inter cooling
Adding a regenerator
All of the above
Compressor pressure ratio
Highest pressure to exhaust pressure
Inlet pressure to exhaust pressure
Pressures across the turbine
700°C
2000°C
1500°C
1000°C
Equal to
Less than
More than
None of these
Ammonia and water vapour
Carbon dioxide
Nitrogen
Hydrogen
In gas turbine plants
For operating pneumatic drills
In starting and supercharging of I.C. engines
All of the above
One adiabatic, two isobaric, and one constant volume
Two adiabatic and two isobaric
Two adiabatic, one isobaric and one constant volume
One adiabatic, one isobaric and two constant volumes