Compressors, Gas Turbines and Jet Engines A rocket engine for the combustion of its fuel Carries its own oxygen Uses compressed atmospheric air Uses surrounding air Does not require oxygen Carries its own oxygen Uses compressed atmospheric air Uses surrounding air Does not require oxygen ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For a two stage reciprocating compressor, compression from p₁ to p₃ is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p₂ is given by p₂ = p₁. p₃ p₂ = (p₁ + p₃)/2 P₂ = Pa × p₃/p₁ p₂ = Pa p₃/p₁ p₂ = p₁. p₃ p₂ = (p₁ + p₃)/2 P₂ = Pa × p₃/p₁ p₂ = Pa p₃/p₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as Slip factor Pressure coefficient Degree of reaction Work factor Slip factor Pressure coefficient Degree of reaction Work factor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The volume of air delivered in a medium capacity air compressor per unit time is None of these 0.1 to 1.2 m³/s 0.15 to 5 m³/s Above 5 m³/s None of these 0.1 to 1.2 m³/s 0.15 to 5 m³/s Above 5 m³/s ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of 0.99 0.85 0.75 0.9 0.99 0.85 0.75 0.9 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The efficiency of roots blower ________ with the increase in pressure ratio. Does not change Decreases Increases None of these Does not change Decreases Increases None of these ANSWER DOWNLOAD EXAMIANS APP
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