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. None of these Reduced Increased Zero None of these Reduced Increased Zero ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The pressure ratio in gas turbines is of the order of 0.37569444444444 2.5423611111111 0.16736111111111 0.084027777777778 0.37569444444444 2.5423611111111 0.16736111111111 0.084027777777778 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines When air is to be compressed at a high pressure, then it is advantageous to use Multistage compression without intercooling Multistage compression with intercooling Single stage compression None of these Multistage compression without intercooling Multistage compression with intercooling Single stage compression None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio Decreases First increases and then decreases First decreases and then increases Increases Decreases First increases and then decreases First decreases and then increases Increases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ideal efficiency of simple gas turbine cycle depends on Pressure ratio All of these Minimum cycle temperature Maximum cycle temperature Pressure ratio All of these Minimum cycle temperature Maximum cycle temperature ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A gas turbine used in air craft should have High h.p. and low weight High speed and high h.p. Low weight and small frontal area Small frontal area and high h.p. High h.p. and low weight High speed and high h.p. Low weight and small frontal area Small frontal area and high h.p. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS