Which is false statement about advantages of multistage compressor in comparison to single stage compressor? Less loss of air due to leakage past the cylinder Less power requirement Better mechanical balance Lower volumetric efficiency TRUE ANSWER : ? YOUR ANSWER : ?
The thrust of a jet propulsion power unit can be increased by Burning fuel after gas turbine All of these Injecting water into the compressor Injecting ammonia into the combustion chamber TRUE ANSWER : ? YOUR ANSWER : ?
Propulsion efficiency of the following order is obtained in practice 0.72 0.34 0.5 0.6 TRUE ANSWER : ? YOUR ANSWER : ?
A rocket works with maximum overall efficiency when air craft velocity is equal to the Half the jet velocity Average of the jet velocity Twice the jet velocity Jet velocity TRUE ANSWER : ? YOUR ANSWER : ?
In a centrifugal compressor, the flow of air is ________ to the axis of compressor. Inclined Parallel None of these Perpendicular TRUE ANSWER : ? YOUR ANSWER : ?
A centrifugal compressor works on the principle of Conversion of pressure energy into kinetic energy Centripetal action Generating pressure directly Conversion of kinetic energy into pressure energy TRUE ANSWER : ? YOUR ANSWER : ?
Standard air is the air at 0°C and standard atmospheric conditions 15°C and 1 kg/cm² Atmospheric conditions at any specific location 20°C and 1 kg/cm² and relative humidity 36% TRUE ANSWER : ? YOUR ANSWER : ?
The work-done on a compressor will be minimum if air is taken from A source at 0° C The atmosphere A source of low temperature air A source of high temperature air TRUE ANSWER : ? YOUR ANSWER : ?
For perfect intercooling in a three stage compressor p₁ p₃ = p₂ p₄ p₁ p₂ = p₃ p₄ p₃/p₁ = p₄/p₂ p₂/p₁ = p₃/p₂ = p₄/p₃ TRUE ANSWER : ? YOUR ANSWER : ?
The pressure ratio in gas turbines is of the order of 0.16736111111111 0.37569444444444 0.084027777777778 2.5423611111111 TRUE ANSWER : ? YOUR ANSWER : ?