Compressors, Gas Turbines and Jet Engines Gas turbines use following type of air compressor Reciprocating type Axial flow type Lobe type Centrifugal type Reciprocating type Axial flow type Lobe type Centrifugal type ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The compressor capacity with decrease in suction temperature Increases May increase or decrease depending on compressor capacity Remain unaffected Decreases Increases May increase or decrease depending on compressor capacity Remain unaffected Decreases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ratio of isentropic work to Euler work is known as Slip factor Work coefficient Pressure coefficient Polytropic reaction Slip factor Work coefficient Pressure coefficient Polytropic reaction ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The type of rotary compressor used in aeroplanes, is of Axial flow type Centrifugal type None of these Radial flow type Axial flow type Centrifugal type None of these Radial flow type ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turbine and fixed higher and lower temperature) with increase in pressure ratio will Increase first at fast rate and then slow Decrease continuously First increase, reach maximum and then decrease Increase first at slow rate and then fast Increase first at fast rate and then slow Decrease continuously First increase, reach maximum and then decrease Increase first at slow rate and then fast ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Axial flow compressor has the following advantage over centrifugal compressor Higher pressure ratio per stage Higher average velocities Larger air handling ability per unit frontal area Aerofoil blades are used Higher pressure ratio per stage Higher average velocities Larger air handling ability per unit frontal area Aerofoil blades are used ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS