In the diffuser only
In the impeller only
In the diffuser and impeller
In the inlet guide vanes only
C. In the diffuser and impeller
Inlet whirl velocity
Outlet whirl velocity
Inlet velocity of flow
Outlet velocity of flow
1 - k + k (p₁/p₂)1/n
1 + k - k (p₂/p₁)1/n
1 - k + k (p₁/p₂) n- 1/n
1 + k - k (p₂/p₁) n-1/n
Centrifugal
Reciprocating
Axial
Screw
Carries its own oxygen
Uses surrounding air
Uses compressed atmospheric air
Does not require oxygen
Reduction of speed of incoming air and conversion of part of it into pressure energy
Compression of inlet air
Increasing speed of incoming air
Lost work
The combustion chamber in a rocket engine is directly analogous to the reservoir of a supersonic wind tunnel
The stagnation conditions exist at the combustion chamber
The exit velocities of exhaust gases are much higher than those in jet engine
All of the above
High nickel alloy
Stainless steel
Carbon steel
High alloy steel
Inlet losses
Impeller channel losses
Diffuser losses
All of the above
Same as isothermal
Same as adiabatic
Better than isothermal and adiabatic
In between isothermal and adiabatic
0.5 kg
1.0 kg
1.3 kg
2.2 kg
Provides greater flexibility
Provides lesser flexibility
In never used
Is used when gas is to be burnt
r -1
1 - r -1
1 - (1/r) -1/
1 - (1/r) /-1
Reciprocating compressor
Centrifugal compressor
Axial flow compressor
Turbo compressor
The propulsive matter is ejected from within the propelled body
The propulsive matter is caused to flow around the propelled body
Its functioning does not depend upon presence of air
None of the above
1
1.2
1.3
1.4
Free air delivery
Compressor capacity
Swept volume
None of these
Equal to
Less than
More than
None of these
Brayton or Atkinson cycle
Carnot cycle
Rankine cycle
Erricson cycle
Compressor efficiency
Isentropic efficiency
Euler's efficiency
Pressure coefficient
In the diffuser only
In the impeller only
In the diffuser and impeller
In the inlet guide vanes only
p₂ = p₁ × p₃
p₂ = p₁/p₃
p₂ = p₁ × p₂
p₂ = p₃/p₁
Equal to
Less than
More than
None of these
Pulsejet requires no ambient air for propulsion
Ramjet engine has no turbine
Turbine drives compressor in a Turbojet
Bypass turbojet engine increases the thrust without adversely affecting, the propulsive efficiency and fuel economy
Small quantities of air at high pressures
Large quantities of air at high pressures
Small quantities of air at low pressures
Large quantities of air at low pressures
Gas turbine plant
Petrol engine
Diesel engine
Solar plant
Conversion of pressure energy into kinetic energy
Conversion of kinetic energy into pressure energy
Centripetal action
Generating pressure directly
Constant volume
Constant temperature
Constant pressure
None of these
Electric motor
Engine
Either (A) or (B)
None of these
They can generate very high thrust
They have high propulsion efficiency
These engines can work on several fuels
They are not air breathing engines
Isothermally
Adiabatically
Isentropically
Isochronically