Compressors, Gas Turbines and Jet Engines A large clearance volume in a reciprocating compressor results in Lower suction pressure Reduced volume flow rate Lower delivery pressure Increased volume flow rate Lower suction pressure Reduced volume flow rate Lower delivery pressure Increased volume flow rate 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)/2 p₂ = p₁. p₃ p₂ = Pa p₃/p₁ P₂ = Pa × p₃/p₁ p₂ = (p₁ + p₃)/2 p₂ = p₁. p₃ p₂ = Pa p₃/p₁ P₂ = Pa × p₃/p₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The performance of air compressor at high altitudes will be ________ as compared to that at sea level. None of these Same Higher Lower None of these Same Higher Lower ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio First increases and then decreases Increases Decreases Remain same First increases and then decreases Increases Decreases Remain same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is Low/high depending on make and type Low High Same Low/high depending on make and type Low High Same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of Oxygen alone Vacuum Compressed air Atmospheric air Oxygen alone Vacuum Compressed air Atmospheric air ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS