Compressors, Gas Turbines and Jet Engines
Which one of the following is the effect of blade shape on performance of a centrifugal compressor?

Forward curved blades has higher efficiency
Backward curved blades lead to stable performance
Forward curved blades produce lower pressure ratio
Backward curved blades has poor efficiency

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

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
Gas turbines use both air and liquid cooling
Gas turbines have their blades similar to steam turbine

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