Compressors, Gas Turbines and Jet Engines Ram compression in turbojet involves Increasing speed of incoming air Lost work Reduction of speed of incoming air and conversion of part of it into pressure energy Compression of inlet air Increasing speed of incoming air Lost work Reduction of speed of incoming air and conversion of part of it into pressure energy Compression of inlet air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The efficiency of the vane blower is (where W₁ = Workdone due to compression, and W₂ = Workdone due to back flow) (W₁ + W₂)/W₂ W₁/(W₁ + W₂) W₂/(W₁ + W₂) (W₁ + W₂)/W₁ (W₁ + W₂)/W₂ W₁/(W₁ + W₂) W₂/(W₁ + W₂) (W₁ + W₂)/W₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The pressure ratio in gas turbines is of the order of 2.5423611111111 0.16736111111111 0.084027777777778 0.37569444444444 2.5423611111111 0.16736111111111 0.084027777777778 0.37569444444444 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Separators are generally used in air compressor installations Between the after-cooler and receiver After the inter-cooler Before the inter-cooler Before first stage suction Between the after-cooler and receiver After the inter-cooler Before the inter-cooler Before first stage suction ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation 1.0% 0.5% 0.1% 5% 1.0% 0.5% 0.1% 5% ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Cylinder clearance in a compressor should be As small as possible About 50% of swept volume About 100% of swept volume As large as possible As small as possible About 50% of swept volume About 100% of swept volume As large as possible ANSWER DOWNLOAD EXAMIANS APP
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