Compressors, Gas Turbines and Jet Engines
Which is false statement about multistage compression?

The moisture in air is condensed in the inter-cooler
Power consumption per unit of air delivered is low
Volumetric efficiency is high
It is best suited for compression ratios around 7:1

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Compressors, Gas Turbines and Jet Engines
Choose the correct statement

Gas turbines have high standby losses and require lot of maintenance
Gas turbines has flat efficiency at part loads
Gas turbine is capable of rapid start up and loading
Gas turbine requires lot of cooling water

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Compressors, Gas Turbines and Jet Engines
An ideal air compressor cycle with clearance on P-V diagram can be represented by following processes

Two adiabatic, one isobaric and one constant volume
One adiabatic, two isobaric, and one constant volume
Two adiabatic and two isobaric
One adiabatic, one isobaric and two constant volumes

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

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

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