Compressors, Gas Turbines and Jet Engines The following property is most important for material used for gas turbine blade Creep Corrosion resistance Fatigue Toughness Creep Corrosion resistance Fatigue Toughness ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression though most efficient, but is not practicable because It is impossible in practice It requires very big cylinder It does not increase pressure much Compressor has to run at very slow speed to achieve it It is impossible in practice It requires very big cylinder It does not increase pressure much Compressor has to run at very slow speed to achieve it ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ram compression in turbojet involves Increasing speed of incoming air Compression of inlet air Lost work Reduction of speed of incoming air and conversion of part of it into pressure energy Increasing speed of incoming air Compression of inlet air Lost work Reduction of speed of incoming air and conversion of part of it into pressure energy ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio) 1 - r ɣ-1 1 - (1/r) ɣ/ɣ-1 1 - (1/r) ɣ-1/ɣ r ɣ-1 1 - r ɣ-1 1 - (1/r) ɣ/ɣ-1 1 - (1/r) ɣ-1/ɣ r ɣ-1 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The gas in cooling chamber of a closed cycle gas turbine is cooled at Constant temperature Constant volume Constant pressure None of the listed here Constant temperature Constant volume Constant pressure None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The work ratio of a gas turbine plant is defined as the ratio of Net work output and heat supplied Net work output and work done by turbine Actual heat drop and isentropic heat drop Net work output and isentropic heat drop Net work output and heat supplied Net work output and work done by turbine Actual heat drop and isentropic heat drop Net work output and isentropic heat drop ANSWER DOWNLOAD EXAMIANS APP
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