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 Jet velocity Average of the jet velocity Twice the jet velocity Half the jet velocity Jet velocity Average of the jet velocity Twice the jet velocity ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ratio of the discharge pressure to the inlet pressure of air is called Compressor efficiency Expansion ratio Compression ratio Volumetric efficiency Compressor efficiency Expansion ratio Compression ratio Volumetric efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In jet engines, paraffin is usually used as the fuel because of its High calorific value Both (A) and (C) above Ease of atomisation Low freezing point High calorific value Both (A) and (C) above Ease of atomisation Low freezing point 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
Compressors, Gas Turbines and Jet Engines Fighter bombers use following type of engine Rocket Ramjet Turbojet Turbo-propeller Rocket Ramjet Turbojet Turbo-propeller ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The clearance volume of the air compressor is kept minimum because It permits isothermal compression It allows maximum compression to be achieved It results in minimum work It greatly affects volumetric efficiency It permits isothermal compression It allows maximum compression to be achieved It results in minimum work It greatly affects volumetric efficiency ANSWER DOWNLOAD EXAMIANS APP
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