Compressors, Gas Turbines and Jet Engines The compression ratio in a gas turbine is of the order of 3.5 : 1 0.20902777777778 0.33402777777778 0.50069444444444 3.5 : 1 0.20902777777778 0.33402777777778 0.50069444444444 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix ‘I’ and ‘o’ stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity U < Vo Vt > Vo V = Uo Vi = Vo U < Vo Vt > Vo V = Uo Vi = Vo ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines An after-cooler is used to Cause moisture and oil vapour to drop out Cool the air Reduce volume of air Remove impurities from air Cause moisture and oil vapour to drop out Cool the air Reduce volume of air Remove impurities from air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at Impeller outlet radius Impeller inlet radius Diffuser inlet radius Diffuser outlet radius Impeller outlet radius Impeller inlet radius Diffuser inlet radius Diffuser outlet radius ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine as compared to steam turbine Has compressor and combustion chamber All of these Requires less space for installation Has less efficiency Has compressor and combustion chamber All of these Requires less space for installation Has less efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The blades of gas turbine are made of High nickel alloy Stainless steel Carbon steel High alloy steel High nickel alloy Stainless steel Carbon steel High alloy steel ANSWER DOWNLOAD EXAMIANS APP
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