Compressors, Gas Turbines and Jet Engines The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature 0.005 0.05 0.01 0.001 0.005 0.05 0.01 0.001 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Axial flow compressor has the following advantage over centrifugal compressor 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 Higher pressure ratio per stage Higher average velocities ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature. Equal to More than Less than None of these Equal to More than Less than None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Pick up the false statement Gas turbine is a self starting unit Exhaust losses in gas turbine are high due to large mass flow rate Overall efficiency of gas turbine plant is lower than that of a reciprocating engine Gas turbine does not require huge quantity of water like steam plant Gas turbine is a self starting unit Exhaust losses in gas turbine are high due to large mass flow rate Overall efficiency of gas turbine plant is lower than that of a reciprocating engine Gas turbine does not require huge quantity of water like steam plant ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The efficiency of jet engine is Higher at high altitudes Lower at low speed Higher at high speed Same at all altitudes Higher at high altitudes Lower at low speed Higher at high speed Same at all altitudes ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix ‘I’ and ‘o’ stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity U < Vo Vt > Vo Vi = Vo V = Uo U < Vo Vt > Vo Vi = Vo V = Uo ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS