Same
More
Less
Depends on other factors
C. Less
A.C. electric motor
Compressed air
Petrol engine
Diesel engine
Compression index
Compression ratio
Compressor efficiency
Mean effective pressure
Mass flow rate
Pressure ratio
Change in load
Stagnation pressure at the outlet
Higher
Lower
Same
None of the above
6000 KW
15 KW
600 KW
150 KW
The reciprocating compressors are best suited for high pressure and low volume capacity
The effect of clearance volume on power consumption is negligible for the same volume of discharge
Both (A) and (B)
None of these
Centrifugal type
Axial flow type
Radial flow type
None of these
Isothermal compression
Isentropic compression
Polytropic compression
None of these
Increase in net output but decrease in thermal efficiency
Increase in thermal efficiency but decrease in net output
Increase in both thermal efficiency and net output
Decrease in both thermal efficiency and net output
Isothermal compression
Adiabatic compression
Isentropic compression
Polytropic compression
D₁/D₂ = p₁ p₂
D₁/D₂ = p₁/p₂
D₁/D₂ = p₂/p₁
None of these
Better lubrication is possible advantages of multistage
More loss of air due to leakage past the cylinder
Mechanical balance is better
Air can be cooled perfectly in between
High nickel alloy
Stainless steel
Carbon steel
High alloy steel
Increases with decrease in compression ratio
Decreases with decrease in compression ratio
Increases with increase in compression ratio
Decreases with increase in compression ratio
Decrease
Increase
Remain same
Does not change
No propeller
Propeller in front
Propeller at back
Propeller on the top
Indicated power
Brake power
Frictional power
None of these
Equal to
Less than
More than
None of these
Same
One-half
One fourth
One sixth
(p₁ - p₂)/2
(p₁ + p₂)/2
p₁/p₂
p₁ p₂
Atmospheric
Slightly more than atmospheric
Slightly less than atmospheric
Pressure slightly less than atmospheric and temperature slightly more than atmospheric
Actual volume of the air delivered by the compressor when reduced to normal temperature and pressure conditions
Volume of air delivered by the compressor
Volume of air sucked by the compressor during its suction stroke
None of the above
To increase the output
To increase the efficiency
To save fuel
To reduce the exit temperature
Gas turbine is a self starting unit
Gas turbine does not require huge quantity of water like steam plant
Exhaust losses in gas turbine are high due to large mass flow rate
Overall efficiency of gas turbine plant is lower than that of a reciprocating engine
Injecting water into the compressor
Burning fuel after gas turbine
Injecting ammonia into the combustion chamber
All of the above
Gas turbine
4-stroke petrol engine
4-stroke diesel engine
Multi cylinder engine
Gas turbine plant
Petrol engine
Diesel engine
Solar plant
Compressor capacity
Compression ratio
Compressor efficiency
Mean effective pressure
W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1)
W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1)
W₁/W₂ = n₁/n₂
W₁/W₂ = n₂/n₁
Radial flow
Axial flow
Centrifugal
None of the above