Compressors, Gas Turbines and Jet Engines Ram compression in turbojet involves 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 Increasing speed of incoming air Compression of inlet air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The maximum propulsion efficiency of a turbojet is attained at around following speed 1700 km/hr 1050 km/hr 2400 km/hr 550 km/hr 1700 km/hr 1050 km/hr 2400 km/hr 550 km/hr ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a reciprocating air compressor, the compression work per kg of air Increases as clearance volume decreases Is independent of clearance volume Decreases as clearance volume increases Increases as clearance volume increases Increases as clearance volume decreases Is independent of clearance volume Decreases as clearance volume increases Increases as clearance volume increases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine cycle with regenerator Allows operation at very high altitudes 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 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The air entry velocity m a rocket as compared to aircraft is Zero More Same Less Zero More Same Less ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The net work input required for compressor with increase in clearance volume Increases Remains same Increases/decreases depending on compressor capacity Decreases Increases Remains same Increases/decreases depending on compressor capacity Decreases ANSWER DOWNLOAD EXAMIANS APP
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