Steam Boilers, Engines, Nozzles and Turbines
Bomb calorimeter is used to determine

Higher calorific value at constant pressure
Lower calorific value at constant volume
Lower calorific value at constant pressure
Higher calorific value at constant volume

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Steam Boilers, Engines, Nozzles and Turbines
The relative efficiency is defined as the

Ratio of brake power to the indicated power
Product of thermal efficiency and Rankine efficiency
Ratio of thermal efficiency to Rankine efficiency
Ratio of heat equivalent to indicated power to the energy supplied in steam

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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
It increases thermal efficiency
Inherent moisture and surface moisture are different things
In some coals moisture may be present up to 40%

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