Increases with decrease in compression ratio
Decreases with decrease in compression ratio
Increases with increase in compression ratio
Decreases with increase in compression ratio
D. Decreases with increase in compression ratio
550 km/hr
1050 km/hr
1700 km/hr
2400 km/hr
Constant volume
Constant temperature
Constant pressure
None of these
Atmospheric conditions at any specific location
20°C and 1 kg/cm² and relative humidity 36%
0°C and standard atmospheric conditions
15°C and 1 kg/cm²
6 kg/cm²
10 kg/cm²
16 kg/cm²
25 kg/cm²
Multistage compression
Cold water spray
Both (A) and (B) above
Fully insulating the cylinder
Increases
Decreases
Remains same
Increases/decreases depending on compressor capacity
Brayton or Atkinson cycle
Carnot cycle
Rankine cycle
Erricson cycle
Back pressure
Critical pressure
Discharge pressure
None of these
Equal to
Less than
More than
None of these
Surrounding air
Compressed atmospheric air
Its own oxygen
None of these
Compresses 3 m³/min of standard air
Compresses 3 m³/ min of free air
Delivers 3 m³/ min of compressed air
Delivers 3 m³/ min of compressed air at delivery pressure
Pressure ratio
Maximum cycle temperature
Minimum cycle temperature
All of the above
Low
High
Same
Low/high depending on make and type
In two phases
In three phases
In a single phase
In the form of air and water mixture
Compressor capacity
Compression ratio
Compressor efficiency
Mean effective pressure
Start-stop motor
Constant speed unloader
Relief valve
Variable speed
Rise gradually towards the point of use
Drop gradually towards the point of use
Be laid vertically
Be laid exactly horizontally
1
1.2
1.3
1.4
W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1)
W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1)
W₁/W₂ = n₁/n₂
W₁/W₂ = n₂/n₁
Does not change
Increases
Decreases
First decrease and then increase
Lower heating value
Higher heating value
Heating value
Higher calorific value
N.T.P. conditions
Intake temperature and pressure conditions
0°C and 1 kg/cm²
20°C and 1 kg/cm²
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
Same
Lower
Higher
None of these
To supply base load requirements
To supply peak load requirements
To enable start thermal power plant
In emergency
Isothermally
Adiabatically
Isentropically
Isochronically
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
Brayton or Atkinson cycle
Rankine cycle
Carnot cycle
Erricson cycle
Zero
Less
More
Same
Throttle control
Clearance control
Blow off control
Any one of the above