Steam Boilers, Engines, Nozzles and Turbines
Water boils when its vapor pressure

Equals the pressure of water in the container
Equals to atmospheric pressure
Equals 760 mm of mercury
Equals that of the surroundings

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Steam Boilers, Engines, Nozzles and Turbines
Locomotive boiler is a

Single tube, vertical, externally fired and stationary boiler
Single tube, horizontal, internally fired and stationary boiler
Multi-tubular, horizontal, internally fired and mobile boiler
Multi-tubular, horizontal, externally fired and stationary boiler

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