Compressors, Gas Turbines and Jet Engines For speed above 3000 km/hour, it is more advantageous to use Propellers Rockets Ramjet engine Turbojet engine Propellers Rockets Ramjet engine Turbojet engine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The mass of gas turbine per kW developed is about ________ as that of an I.C. engine. One fourth Same One-half One sixth One fourth Same One-half One sixth ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is Bled gas from turbine is heated and readmitted for complete expansion Compressed air before entering the combustion chamber is heated Heated Exhaust gases drive the compressor Bled gas from turbine is heated and readmitted for complete expansion Compressed air before entering the combustion chamber is heated Heated Exhaust gases drive the compressor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The volumetric efficiency for reciprocating air compressors is about 60 to 70% 10 to 40% 70 to 90% 40 to 60% 60 to 70% 10 to 40% 70 to 90% 40 to 60% ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a jet propulsion Its functioning does not depend upon presence of air None of these The propulsive matter is ejected from within the propelled body The propulsive matter is caused to flow around the propelled body Its functioning does not depend upon presence of air None of these The propulsive matter is ejected from within the propelled body The propulsive matter is caused to flow around the propelled body ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Axial flow compressor has the following advantage over centrifugal compressor Aerofoil blades are used Higher average velocities Larger air handling ability per unit frontal area Higher pressure ratio per stage Aerofoil blades are used Higher average velocities Larger air handling ability per unit frontal area Higher pressure ratio per stage ANSWER DOWNLOAD EXAMIANS APP
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