Compressors, Gas Turbines and Jet Engines
Pick up the correct statement

Gas turbines use both air and liquid cooling
Gas turbines have their blades similar to steam turbine
Large gas turbines use radial inflow turbines
Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip

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Compressors, Gas Turbines and Jet Engines
Ratio of compression is the ratio of

Absolute discharge pressure to the absolute intake pressure
Pressures at discharge and suction corresponding to same temperature
Gauge discharge pressure to the gauge intake pressure
Stroke volume and clearance volume

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