Free air delivery
Compressor capacity
Swept volume
None of these
B. Compressor capacity
Same
One-half
One fourth
One sixth
Compression index
Compression ratio
Compressor efficiency
Mean effective pressure
Same
Less
More
None of these
W₁/(W₁ + W₂)
W₂/(W₁ + W₂)
(W₁ + W₂)/W₁
(W₁ + W₂)/W₂
Single stage compression
Multistage compression without intercooling
Multistage compression with intercooling
None of these
Atmosphere
Vacuum
Discharge nozzle
Back to the compressor
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
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
Brayton or Atkinson cycle
Carnot cycle
Rankine cycle
Erricson cycle
More power
Less power
Same power
More/less power depending on other factors
Gas turbine
I.C engine
Compressor
Air motor
Gas turbine
4-stroke petrol engine
4-stroke diesel engine
Multi cylinder engine
Mass flow rate
Pressure ratio
Change in load
Stagnation pressure at the outlet
High thermal efficiency
Reduction in compressor work
Decrease of heat loss in exhaust
Maximum work output
No propeller
Propeller in front
Propeller at back
Propeller on the top
Gas turbine requires lot of cooling water
Gas turbine is capable of rapid start up and loading
Gas turbines has flat efficiency at part loads
Gas turbines have high standby losses and require lot of maintenance
One stroke
Two strokes
Three strokes
Four strokes
D₁/D₂ = (p₁ p₃)1/2
D₁/D₂ = (p₁/p₃)1/4
D₁/D₂ = (p₁ p₃)1/4
D₁/D₂ = (p₃/p₁)1/4
1 bar
16 bar
64 bar
256 bar
Thrust and range of aircraft
Efficiency of the engine
Both (A) and (B)
None of these
At very high speed
At very slow speed
At average speed
At zero speed
One air stream
Two or more air streams
No air stream
Solid fuel firing
Pressure ratio
Maximum cycle temperature
Minimum cycle temperature
All of the above
Centrifugal
Reciprocating
Axial
Screw
Radial flow compressor
Axial flow compressor
Roots blower
Reciprocating compressor
Increases
Decreases
First increases and then decreases
First decreases and then increases
Highly heated atmospheric air
Solids
Liquid
Plasma
It allows maximum compression to be achieved
It greatly affects volumetric efficiency
It results in minimum work
It permits isothermal compression
Centrifugal type
Axial flow type
Radial flow type
None of these
A.C. electric motor
Compressed air
Petrol engine
Diesel engine