Steam Boilers, Engines, Nozzles and Turbines
A regenerative steam cycle renders

Decreased work output per unit mass of steam
Increased thermal efficiency
Increased work output per unit mass of steam
Decreased work output per unit mass of steam as well as increased thermal efficiency

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Steam Boilers, Engines, Nozzles and Turbines
Which is not the correct statement about moisture in coal?

Some moisture in coal helps in better burning which is not possible with completely dry coal
In some coals moisture may be present up to 40%
It increases thermal efficiency
Inherent moisture and surface moisture are different things

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Steam Boilers, Engines, Nozzles and Turbines
The function of a safety valve is

To blow off steam when the pressure of steam inside the boiler exceeds the working pressure
None of these
To measure pressure of steam inside the steam boiler
To indicate the water level inside the boiler to an observer

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