Compressors, Gas Turbines and Jet Engines
Producer gas is produced by

Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
Passing steam over incandescent coke
Carbonisation of coal
Passing air and a large amount of steam over waste coal at about 65°C

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Compressors, Gas Turbines and Jet Engines
Intercooling in gas turbines

Decreases net output and thermal efficiency both
Decreases net output but increases thermal efficiency
Increases net output and thermal efficiency both
Increases net output but decreases thermal efficiency

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Compressors, Gas Turbines and Jet Engines
In air compressors, free air delivery means the

Volume of air delivered by the compressor
Actual volume of the air delivered by the compressor when reduced to normal temperature and pressure conditions
None of the listed here
Volume of air sucked by the compressor during its suction stroke

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