Steam Boilers, Engines, Nozzles and Turbines
A steam nozzle converts

Heat energy of steam into kinetic energy
Potential energy into heat energy of steam
Heat energy of steam into potential energy
Kinetic energy into heat energy of steam

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Steam Boilers, Engines, Nozzles and Turbines
Boiler H.P. is defined as the

Work done in evaporating 1 kg of steam per hour from and at 100°C into dry saturated steam
Work done by 1 kg of steam at saturation condition
Steam evaporation rate per kg of fuel fired
The evaporation of 15.65 kg of water per hour from and at 100°C into dry saturated steam

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Steam Boilers, Engines, Nozzles and Turbines
In water tube boilers

Forced circulation takes place
None of these
Water passes through the tubes which are surrounded by flames and hot gases
The flames and hot gases pass through the tubes which are surrounded by water

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