Compressors, Gas Turbines and Jet Engines An after-cooler is used to Remove impurities from air Reduce volume of air Cause moisture and oil vapour to drop out Cool the air Remove impurities from air Reduce volume of air Cause moisture and oil vapour to drop out Cool the air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A rocket works with maximum overall efficiency when air craft velocity is equal to the Half the jet velocity Average of the jet velocity Twice the jet velocity Jet velocity Half the jet velocity Average of the jet velocity Twice the jet velocity Jet velocity ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The stagnation pressure rise in a centrifugal compressor takes place In the diffuser only In the impeller only In the inlet guide vanes only In the diffuser and impeller In the diffuser only In the impeller only In the inlet guide vanes only In the diffuser and impeller ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Work ratio of a gas turbine plant is ratio of Work done by turbine and net work output Net work output and work done by turbine Work done by turbine and heat supplied Net work output and heat supplied Work done by turbine and net work output Net work output and work done by turbine Work done by turbine and heat supplied Net work output and heat supplied 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 = Pa × p₃/p₁ p₂ = p₁. p₃ p₂ = Pa p₃/p₁ p₂ = (p₁ + p₃)/2 P₂ = Pa × p₃/p₁ p₂ = p₁. p₃ p₂ = Pa p₃/p₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Water is injected in gas turbine cycle to Control fire hazards Control output of turbine Control temperature Increase efficiency Control fire hazards Control output of turbine Control temperature Increase efficiency ANSWER DOWNLOAD EXAMIANS APP
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