Compressors, Gas Turbines and Jet Engines An after-cooler is used to Cause moisture and oil vapour to drop out Remove impurities from air Reduce volume of air Cool the air Cause moisture and oil vapour to drop out Remove impurities from air Reduce volume of air Cool the air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ratio of indicated h.p. to shaft h.p. in known as Mechanical efficiency Isothermal efficiency Compressor efficiency Volumetric efficiency Mechanical efficiency Isothermal efficiency Compressor efficiency Volumetric efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines High air-fuel ratio in gas turbines Increases power output Improves thermal efficiency Reduces exhaust temperature Do not damage turbine blades Increases power output Improves thermal efficiency Reduces exhaust temperature Do not damage turbine blades ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Which of the following statement is correct relating to rocket engines? The combustion chamber in a rocket engine is directly analogous to the reservoir of a supersonic wind tunnel The exit velocities of exhaust gases are much higher than those in jet engine All of these The stagnation conditions exist at the combustion chamber The combustion chamber in a rocket engine is directly analogous to the reservoir of a supersonic wind tunnel The exit velocities of exhaust gases are much higher than those in jet engine All of these The stagnation conditions exist at the combustion chamber ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________ velocity (without effecting the mass of air to flow and velocity of flow) is known as prewhirl. Reduced Increased None of these Zero Reduced Increased None of these Zero ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine as compared to steam turbine Has less efficiency Has compressor and combustion chamber Requires less space for installation All of these Has less efficiency Has compressor and combustion chamber Requires less space for installation All of these ANSWER DOWNLOAD EXAMIANS APP
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