Compressors, Gas Turbines and Jet Engines In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to 0°C and 1 kg/cm² N.T.P. conditions Intake temperature and pressure conditions 20°C and 1 kg/cm² 0°C and 1 kg/cm² N.T.P. conditions Intake temperature and pressure conditions 20°C and 1 kg/cm² ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The material commonly used for air craft gas turbine is Stainless steel High alloy steel Timken, Haste alloys Duralumin Stainless steel High alloy steel Timken, Haste alloys Duralumin ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In n₁ and n₂ are the indices of compression for the first and second stage of compression, then the ratio of work-done on the first and second stages (W₁/W₂) with perfect intercooling is given by W₁/W₂ = n₁/n₂ W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1) W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) W₁/W₂ = n₂/n₁ W₁/W₂ = n₁/n₂ W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1) W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) W₁/W₂ = n₂/n₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression efficiency, even when running at high speed, can be approached by using Fully insulating the cylinder Multistage compression Both (A) and (B) above Cold water spray Fully insulating the cylinder Multistage compression Both (A) and (B) above Cold water spray ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Mechanical efficiency of gas turbines as compared to I.C engines is None of these Lower Higher Same None of these Lower Higher Same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine cycle with regenerator Allows high compression ratio Increases thermal efficiency Decreases heat loss is exhaust Allows operation at very high altitudes Allows high compression ratio Increases thermal efficiency Decreases heat loss is exhaust Allows operation at very high altitudes ANSWER DOWNLOAD EXAMIANS APP
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