Compressors, Gas Turbines and Jet Engines The closed cycle in gas turbines Is used when gas is to be burnt In never used Provides lesser flexibility Provides greater flexibility Is used when gas is to be burnt In never used Provides lesser flexibility Provides greater flexibility 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 = n₂(n₁ - 1)/n₁(n₂ - 1) W₁/W₂ = n₁/n₂ W₁/W₂ = n₂/n₁ W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1) W₁/W₂ = n₁/n₂ W₁/W₂ = n₂/n₁ W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Reheating in a gas turbine Increases the turbine work Decreases the thermal efficiency Increases the thermal efficiency Increases the compressor work Increases the turbine work Decreases the thermal efficiency Increases the thermal efficiency Increases the compressor work ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a single stage, single acting reciprocating air compressor, without clearance volume, the work-done is minimum during Isentropic compression Isothermal compression Polytropic compression None of these Isentropic compression Isothermal compression Polytropic compression None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The work ratio of simple gas turbine cycle depends on Minimum cycle temperature Maximum cycle temperature All of these Pressure ratio Minimum cycle temperature Maximum cycle temperature All of these Pressure ratio ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In gas turbines, high thermal efficiency is obtained in Open cycle Closed/open depending on other considerations Closed cycle Closed cycle & Open cycle Open cycle Closed/open depending on other considerations Closed cycle Closed cycle & Open cycle ANSWER DOWNLOAD EXAMIANS APP
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