Compressors, Gas Turbines and Jet Engines In a single stage, single acting reciprocating air compressor, without clearance volume, the work-done is minimum during Polytropic compression Isothermal compression None of these Isentropic compression Polytropic compression Isothermal compression None of these Isentropic compression ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The blades of gas turbine are made of Carbon steel High alloy steel High nickel alloy Stainless steel Carbon steel High alloy steel High nickel alloy Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The working fluid in a turbine is In two phases In three phases In a single phase In the form of air and water mixture In two phases In three phases In a single phase In the form of air and water mixture 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 = Pa × p₃/p₁ p₂ = Pa p₃/p₁ p₂ = (p₁ + p₃)/2 p₂ = p₁. p₃ P₂ = Pa × p₃/p₁ p₂ = Pa p₃/p₁ p₂ = (p₁ + p₃)/2 p₂ = p₁. p₃ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a centrifugal compressor, the ratio of the ________ to the blade velocity is called slip factor. Outlet velocity of flow Inlet velocity of flow Inlet whirl velocity Outlet whirl velocity Outlet velocity of flow Inlet velocity of flow Inlet whirl velocity Outlet whirl velocity ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Mechanical efficiency of gas turbines as compared to I.C engines is Same Lower None of these Higher Same Lower None of these Higher ANSWER DOWNLOAD EXAMIANS APP
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